.. include:: bitmaps.rst
.. include:: mmp.rst
.. include:: journal.rst
+.. include:: orphan.rst
modification time (mtime), and deletion time (dtime). The four fields
are 32-bit signed integers that represent seconds since the Unix epoch
(1970-01-01 00:00:00 GMT), which means that the fields will overflow in
-January 2038. For inodes that are not linked from any directory but are
-still open (orphan inodes), the dtime field is overloaded for use with
-the orphan list. The superblock field ``s_last_orphan`` points to the
-first inode in the orphan list; dtime is then the number of the next
-orphaned inode, or zero if there are no more orphans.
+January 2038. If the filesystem does not have orphan_file feature, inodes
+that are not linked from any directory but are still open (orphan inodes) have
+the dtime field overloaded for use with the orphan list. The superblock field
+``s_last_orphan`` points to the first inode in the orphan list; dtime is then
+the number of the next orphaned inode, or zero if there are no more orphans.
If the inode structure size ``sb->s_inode_size`` is larger than 128
bytes and the ``i_inode_extra`` field is large enough to encompass the
--- /dev/null
+.. SPDX-License-Identifier: GPL-2.0
+
+Orphan file
+-----------
+
+In unix there can inodes that are unlinked from directory hierarchy but that
+are still alive because they are open. In case of crash the filesystem has to
+clean up these inodes as otherwise they (and the blocks referenced from them)
+would leak. Similarly if we truncate or extend the file, we need not be able
+to perform the operation in a single journalling transaction. In such case we
+track the inode as orphan so that in case of crash extra blocks allocated to
+the file get truncated.
+
+Traditionally ext4 tracks orphan inodes in a form of single linked list where
+superblock contains the inode number of the last orphan inode (s\_last\_orphan
+field) and then each inode contains inode number of the previously orphaned
+inode (we overload i\_dtime inode field for this). However this filesystem
+global single linked list is a scalability bottleneck for workloads that result
+in heavy creation of orphan inodes. When orphan file feature
+(COMPAT\_ORPHAN\_FILE) is enabled, the filesystem has a special inode
+(referenced from the superblock through s\_orphan_file_inum) with several
+blocks. Each of these blocks has a structure:
+
+.. list-table::
+ :widths: 8 8 24 40
+ :header-rows: 1
+
+ * - Offset
+ - Type
+ - Name
+ - Description
+ * - 0x0
+ - Array of \_\_le32 entries
+ - Orphan inode entries
+ - Each \_\_le32 entry is either empty (0) or it contains inode number of
+ an orphan inode.
+ * - blocksize - 8
+ - \_\_le32
+ - ob\_magic
+ - Magic value stored in orphan block tail (0x0b10ca04)
+ * - blocksize - 4
+ - \_\_le32
+ - ob\_checksum
+ - Checksum of the orphan block.
+
+When a filesystem with orphan file feature is writeably mounted, we set
+RO\_COMPAT\_ORPHAN\_PRESENT feature in the superblock to indicate there may
+be valid orphan entries. In case we see this feature when mounting the
+filesystem, we read the whole orphan file and process all orphan inodes found
+there as usual. When cleanly unmounting the filesystem we remove the
+RO\_COMPAT\_ORPHAN\_PRESENT feature to avoid unnecessary scanning of the orphan
+file and also make the filesystem fully compatible with older kernels.
* - 11
- Traditional first non-reserved inode. Usually this is the lost+found directory. See s\_first\_ino in the superblock.
+Note that there are also some inodes allocated from non-reserved inode numbers
+for other filesystem features which are not referenced from standard directory
+hierarchy. These are generally reference from the superblock. They are:
+
+.. list-table::
+ :widths: 20 50
+ :header-rows: 1
+
+ * - Superblock field
+ - Description
+
+ * - s\_lpf\_ino
+ - Inode number of lost+found directory.
+ * - s\_prj\_quota\_inum
+ - Inode number of quota file tracking project quotas
+ * - s\_orphan\_file\_inum
+ - Inode number of file tracking orphan inodes.
- Filename charset encoding flags.
* - 0x280
- \_\_le32
- - s\_reserved[95]
+ - s\_orphan\_file\_inum
+ - Orphan file inode number.
+ * - 0x284
+ - \_\_le32
+ - s\_reserved[94]
- Padding to the end of the block.
* - 0x3FC
- \_\_le32
the journal, JBD2 incompat feature
(JBD2\_FEATURE\_INCOMPAT\_FAST\_COMMIT) gets
set (COMPAT\_FAST\_COMMIT).
+ * - 0x1000
+ - Orphan file allocated. This is the special file for more efficient
+ tracking of unlinked but still open inodes. When there may be any
+ entries in the file, we additionally set proper rocompat feature
+ (RO\_COMPAT\_ORPHAN\_PRESENT).
.. _super_incompat:
- Filesystem tracks project quotas. (RO\_COMPAT\_PROJECT)
* - 0x8000
- Verity inodes may be present on the filesystem. (RO\_COMPAT\_VERITY)
+ * - 0x10000
+ - Indicates orphan file may have valid orphan entries and thus we need
+ to clean them up when mounting the filesystem
+ (RO\_COMPAT\_ORPHAN\_PRESENT).
.. _super_def_hash:
indirect.o inline.o inode.o ioctl.o mballoc.o migrate.o \
mmp.o move_extent.o namei.o page-io.o readpage.o resize.o \
super.o symlink.o sysfs.o xattr.o xattr_hurd.o xattr_trusted.o \
- xattr_user.o fast_commit.o
+ xattr_user.o fast_commit.o orphan.o
ext4-$(CONFIG_EXT4_FS_POSIX_ACL) += acl.o
ext4-$(CONFIG_EXT4_FS_SECURITY) += xattr_security.o
* possible we just missed a transaction commit that did so
*/
smp_mb();
- if (sbi->s_mb_free_pending == 0)
+ if (sbi->s_mb_free_pending == 0) {
+ if (test_opt(sb, DISCARD)) {
+ atomic_inc(&sbi->s_retry_alloc_pending);
+ flush_work(&sbi->s_discard_work);
+ atomic_dec(&sbi->s_retry_alloc_pending);
+ }
return ext4_has_free_clusters(sbi, 1, 0);
+ }
/*
* it's possible we've just missed a transaction commit here,
*/
struct rw_semaphore xattr_sem;
- struct list_head i_orphan; /* unlinked but open inodes */
+ /*
+ * Inodes with EXT4_STATE_ORPHAN_FILE use i_orphan_idx. Otherwise
+ * i_orphan is used.
+ */
+ union {
+ struct list_head i_orphan; /* unlinked but open inodes */
+ unsigned int i_orphan_idx; /* Index in orphan file */
+ };
/* Fast commit related info */
__u8 s_last_error_errcode;
__le16 s_encoding; /* Filename charset encoding */
__le16 s_encoding_flags; /* Filename charset encoding flags */
- __le32 s_reserved[95]; /* Padding to the end of the block */
+ __le32 s_orphan_file_inum; /* Inode for tracking orphan inodes */
+ __le32 s_reserved[94]; /* Padding to the end of the block */
__le32 s_checksum; /* crc32c(superblock) */
};
#define EXT4_ENC_UTF8_12_1 1
+/* Types of ext4 journal triggers */
+enum ext4_journal_trigger_type {
+ EXT4_JTR_ORPHAN_FILE,
+ EXT4_JTR_NONE /* This must be the last entry for indexing to work! */
+};
+
+#define EXT4_JOURNAL_TRIGGER_COUNT EXT4_JTR_NONE
+
+struct ext4_journal_trigger {
+ struct jbd2_buffer_trigger_type tr_triggers;
+ struct super_block *sb;
+};
+
+static inline struct ext4_journal_trigger *EXT4_TRIGGER(
+ struct jbd2_buffer_trigger_type *trigger)
+{
+ return container_of(trigger, struct ext4_journal_trigger, tr_triggers);
+}
+
+#define EXT4_ORPHAN_BLOCK_MAGIC 0x0b10ca04
+
+/* Structure at the tail of orphan block */
+struct ext4_orphan_block_tail {
+ __le32 ob_magic;
+ __le32 ob_checksum;
+};
+
+static inline int ext4_inodes_per_orphan_block(struct super_block *sb)
+{
+ return (sb->s_blocksize - sizeof(struct ext4_orphan_block_tail)) /
+ sizeof(u32);
+}
+
+struct ext4_orphan_block {
+ atomic_t ob_free_entries; /* Number of free orphan entries in block */
+ struct buffer_head *ob_bh; /* Buffer for orphan block */
+};
+
+/*
+ * Info about orphan file.
+ */
+struct ext4_orphan_info {
+ int of_blocks; /* Number of orphan blocks in a file */
+ __u32 of_csum_seed; /* Checksum seed for orphan file */
+ struct ext4_orphan_block *of_binfo; /* Array with info about orphan
+ * file blocks */
+};
+
/*
* fourth extended-fs super-block data in memory
*/
/* Journaling */
struct journal_s *s_journal;
- struct list_head s_orphan;
- struct mutex s_orphan_lock;
unsigned long s_ext4_flags; /* Ext4 superblock flags */
+ struct mutex s_orphan_lock; /* Protects on disk list changes */
+ struct list_head s_orphan; /* List of orphaned inodes in on disk
+ list */
+ struct ext4_orphan_info s_orphan_info;
unsigned long s_commit_interval;
u32 s_max_batch_time;
u32 s_min_batch_time;
unsigned int s_mb_free_pending;
struct list_head s_freed_data_list; /* List of blocks to be freed
after commit completed */
+ struct list_head s_discard_list;
+ struct work_struct s_discard_work;
+ atomic_t s_retry_alloc_pending;
struct rb_root s_mb_avg_fragment_size_root;
rwlock_t s_mb_rb_lock;
struct list_head *s_mb_largest_free_orders;
struct mb_cache *s_ea_inode_cache;
spinlock_t s_es_lock ____cacheline_aligned_in_smp;
+ /* Journal triggers for checksum computation */
+ struct ext4_journal_trigger s_journal_triggers[EXT4_JOURNAL_TRIGGER_COUNT];
+
/* Ratelimit ext4 messages. */
struct ratelimit_state s_err_ratelimit_state;
struct ratelimit_state s_warning_ratelimit_state;
EXT4_STATE_LUSTRE_EA_INODE, /* Lustre-style ea_inode */
EXT4_STATE_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */
EXT4_STATE_FC_COMMITTING, /* Fast commit ongoing */
+ EXT4_STATE_ORPHAN_FILE, /* Inode orphaned in orphan file */
};
#define EXT4_INODE_BIT_FNS(name, field, offset) \
*/
#define EXT4_FEATURE_COMPAT_FAST_COMMIT 0x0400
#define EXT4_FEATURE_COMPAT_STABLE_INODES 0x0800
+#define EXT4_FEATURE_COMPAT_ORPHAN_FILE 0x1000 /* Orphan file exists */
#define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
#define EXT4_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
#define EXT4_FEATURE_RO_COMPAT_READONLY 0x1000
#define EXT4_FEATURE_RO_COMPAT_PROJECT 0x2000
#define EXT4_FEATURE_RO_COMPAT_VERITY 0x8000
+#define EXT4_FEATURE_RO_COMPAT_ORPHAN_PRESENT 0x10000 /* Orphan file may be
+ non-empty */
#define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001
#define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002
EXT4_FEATURE_COMPAT_FUNCS(sparse_super2, SPARSE_SUPER2)
EXT4_FEATURE_COMPAT_FUNCS(fast_commit, FAST_COMMIT)
EXT4_FEATURE_COMPAT_FUNCS(stable_inodes, STABLE_INODES)
+EXT4_FEATURE_COMPAT_FUNCS(orphan_file, ORPHAN_FILE)
EXT4_FEATURE_RO_COMPAT_FUNCS(sparse_super, SPARSE_SUPER)
EXT4_FEATURE_RO_COMPAT_FUNCS(large_file, LARGE_FILE)
EXT4_FEATURE_RO_COMPAT_FUNCS(readonly, READONLY)
EXT4_FEATURE_RO_COMPAT_FUNCS(project, PROJECT)
EXT4_FEATURE_RO_COMPAT_FUNCS(verity, VERITY)
+EXT4_FEATURE_RO_COMPAT_FUNCS(orphan_present, ORPHAN_PRESENT)
EXT4_FEATURE_INCOMPAT_FUNCS(compression, COMPRESSION)
EXT4_FEATURE_INCOMPAT_FUNCS(filetype, FILETYPE)
EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
EXT4_FEATURE_RO_COMPAT_BTREE_DIR)
-#define EXT4_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR
+#define EXT4_FEATURE_COMPAT_SUPP (EXT4_FEATURE_COMPAT_EXT_ATTR| \
+ EXT4_FEATURE_COMPAT_ORPHAN_FILE)
#define EXT4_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \
EXT4_FEATURE_INCOMPAT_RECOVER| \
EXT4_FEATURE_INCOMPAT_META_BG| \
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
EXT4_FEATURE_RO_COMPAT_QUOTA |\
EXT4_FEATURE_RO_COMPAT_PROJECT |\
- EXT4_FEATURE_RO_COMPAT_VERITY)
+ EXT4_FEATURE_RO_COMPAT_VERITY |\
+ EXT4_FEATURE_RO_COMPAT_ORPHAN_PRESENT)
#define EXTN_FEATURE_FUNCS(ver) \
static inline bool ext4_has_unknown_ext##ver##_compat_features(struct super_block *sb) \
return (EXT4_SB(sb)->s_es->s_feature_incompat != 0);
}
+extern int ext4_feature_set_ok(struct super_block *sb, int readonly);
+
/*
* Superblock flags
*/
return test_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags);
}
-
/*
* Default values for user and/or group using reserved blocks
*/
int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
struct buffer_head *bh, int create);
int ext4_walk_page_buffers(handle_t *handle,
+ struct inode *inode,
struct buffer_head *head,
unsigned from,
unsigned to,
int *partial,
- int (*fn)(handle_t *handle,
+ int (*fn)(handle_t *handle, struct inode *inode,
struct buffer_head *bh));
-int do_journal_get_write_access(handle_t *handle,
+int do_journal_get_write_access(handle_t *handle, struct inode *inode,
struct buffer_head *bh);
#define FALL_BACK_TO_NONDELALLOC 1
#define CONVERT_INLINE_DATA 2
struct inode *inode);
extern int ext4_dirblock_csum_verify(struct inode *inode,
struct buffer_head *bh);
-extern int ext4_orphan_add(handle_t *, struct inode *);
-extern int ext4_orphan_del(handle_t *, struct inode *);
extern int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
__u32 start_minor_hash, __u32 *next_hash);
extern int ext4_search_dir(struct buffer_head *bh,
return (ext4_has_feature_quota(sb) ||
sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]);
}
+int ext4_enable_quotas(struct super_block *sb);
#endif
/*
/* verity.c */
extern const struct fsverity_operations ext4_verityops;
+/* orphan.c */
+extern int ext4_orphan_add(handle_t *, struct inode *);
+extern int ext4_orphan_del(handle_t *, struct inode *);
+extern void ext4_orphan_cleanup(struct super_block *sb,
+ struct ext4_super_block *es);
+extern void ext4_release_orphan_info(struct super_block *sb);
+extern int ext4_init_orphan_info(struct super_block *sb);
+extern int ext4_orphan_file_empty(struct super_block *sb);
+extern void ext4_orphan_file_block_trigger(
+ struct jbd2_buffer_trigger_type *triggers,
+ struct buffer_head *bh,
+ void *data, size_t size);
+
/*
* Add new method to test whether block and inode bitmaps are properly
* initialized. With uninit_bg reading the block from disk is not enough
#define EXT_MAX_EXTENT(__hdr__) \
((le16_to_cpu((__hdr__)->eh_max)) ? \
((EXT_FIRST_EXTENT((__hdr__)) + le16_to_cpu((__hdr__)->eh_max) - 1)) \
- : 0)
+ : NULL)
#define EXT_MAX_INDEX(__hdr__) \
((le16_to_cpu((__hdr__)->eh_max)) ? \
- ((EXT_FIRST_INDEX((__hdr__)) + le16_to_cpu((__hdr__)->eh_max) - 1)) : 0)
+ ((EXT_FIRST_INDEX((__hdr__)) + le16_to_cpu((__hdr__)->eh_max) - 1)) \
+ : NULL)
static inline struct ext4_extent_header *ext_inode_hdr(struct inode *inode)
{
}
int __ext4_journal_get_write_access(const char *where, unsigned int line,
- handle_t *handle, struct buffer_head *bh)
+ handle_t *handle, struct super_block *sb,
+ struct buffer_head *bh,
+ enum ext4_journal_trigger_type trigger_type)
{
- int err = 0;
+ int err;
might_sleep();
if (ext4_handle_valid(handle)) {
err = jbd2_journal_get_write_access(handle, bh);
- if (err)
+ if (err) {
ext4_journal_abort_handle(where, line, __func__, bh,
handle, err);
+ return err;
+ }
}
- return err;
+ if (trigger_type == EXT4_JTR_NONE || !ext4_has_metadata_csum(sb))
+ return 0;
+ BUG_ON(trigger_type >= EXT4_JOURNAL_TRIGGER_COUNT);
+ jbd2_journal_set_triggers(bh,
+ &EXT4_SB(sb)->s_journal_triggers[trigger_type].tr_triggers);
+ return 0;
}
/*
}
int __ext4_journal_get_create_access(const char *where, unsigned int line,
- handle_t *handle, struct buffer_head *bh)
+ handle_t *handle, struct super_block *sb,
+ struct buffer_head *bh,
+ enum ext4_journal_trigger_type trigger_type)
{
- int err = 0;
+ int err;
- if (ext4_handle_valid(handle)) {
- err = jbd2_journal_get_create_access(handle, bh);
- if (err)
- ext4_journal_abort_handle(where, line, __func__,
- bh, handle, err);
+ if (!ext4_handle_valid(handle))
+ return 0;
+
+ err = jbd2_journal_get_create_access(handle, bh);
+ if (err) {
+ ext4_journal_abort_handle(where, line, __func__, bh, handle,
+ err);
+ return err;
}
- return err;
+ if (trigger_type == EXT4_JTR_NONE || !ext4_has_metadata_csum(sb))
+ return 0;
+ BUG_ON(trigger_type >= EXT4_JOURNAL_TRIGGER_COUNT);
+ jbd2_journal_set_triggers(bh,
+ &EXT4_SB(sb)->s_journal_triggers[trigger_type].tr_triggers);
+ return 0;
}
int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
* Wrapper functions with which ext4 calls into JBD.
*/
int __ext4_journal_get_write_access(const char *where, unsigned int line,
- handle_t *handle, struct buffer_head *bh);
+ handle_t *handle, struct super_block *sb,
+ struct buffer_head *bh,
+ enum ext4_journal_trigger_type trigger_type);
int __ext4_forget(const char *where, unsigned int line, handle_t *handle,
int is_metadata, struct inode *inode,
struct buffer_head *bh, ext4_fsblk_t blocknr);
int __ext4_journal_get_create_access(const char *where, unsigned int line,
- handle_t *handle, struct buffer_head *bh);
+ handle_t *handle, struct super_block *sb,
+ struct buffer_head *bh,
+ enum ext4_journal_trigger_type trigger_type);
int __ext4_handle_dirty_metadata(const char *where, unsigned int line,
handle_t *handle, struct inode *inode,
struct buffer_head *bh);
-#define ext4_journal_get_write_access(handle, bh) \
- __ext4_journal_get_write_access(__func__, __LINE__, (handle), (bh))
+#define ext4_journal_get_write_access(handle, sb, bh, trigger_type) \
+ __ext4_journal_get_write_access(__func__, __LINE__, (handle), (sb), \
+ (bh), (trigger_type))
#define ext4_forget(handle, is_metadata, inode, bh, block_nr) \
__ext4_forget(__func__, __LINE__, (handle), (is_metadata), (inode), \
(bh), (block_nr))
-#define ext4_journal_get_create_access(handle, bh) \
- __ext4_journal_get_create_access(__func__, __LINE__, (handle), (bh))
+#define ext4_journal_get_create_access(handle, sb, bh, trigger_type) \
+ __ext4_journal_get_create_access(__func__, __LINE__, (handle), (sb), \
+ (bh), (trigger_type))
#define ext4_handle_dirty_metadata(handle, inode, bh) \
__ext4_handle_dirty_metadata(__func__, __LINE__, (handle), (inode), \
(bh))
if (path->p_bh) {
/* path points to block */
BUFFER_TRACE(path->p_bh, "get_write_access");
- return ext4_journal_get_write_access(handle, path->p_bh);
+ return ext4_journal_get_write_access(handle, inode->i_sb,
+ path->p_bh, EXT4_JTR_NONE);
}
/* path points to leaf/index in inode body */
/* we use in-core data, no need to protect them */
}
lock_buffer(bh);
- err = ext4_journal_get_create_access(handle, bh);
+ err = ext4_journal_get_create_access(handle, inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (err)
goto cleanup;
}
lock_buffer(bh);
- err = ext4_journal_get_create_access(handle, bh);
+ err = ext4_journal_get_create_access(handle, inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (err)
goto cleanup;
return -ENOMEM;
lock_buffer(bh);
- err = ext4_journal_get_create_access(handle, bh);
+ err = ext4_journal_get_create_access(handle, inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (err) {
unlock_buffer(bh);
goto out;
split_map.m_len - ee_block);
err = ext4_ext_zeroout(inode, &zero_ex1);
if (err)
- goto out;
+ goto fallback;
split_map.m_len = allocated;
}
if (split_map.m_lblk - ee_block + split_map.m_len <
ext4_ext_pblock(ex));
err = ext4_ext_zeroout(inode, &zero_ex2);
if (err)
- goto out;
+ goto fallback;
}
split_map.m_len += split_map.m_lblk - ee_block;
}
}
+fallback:
err = ext4_split_extent(handle, inode, ppath, &split_map, split_flag,
flags);
if (err > 0)
}
/* Same as above, but adds dentry tlv. */
-static bool ext4_fc_add_dentry_tlv(struct super_block *sb, u16 tag,
- int parent_ino, int ino, int dlen,
- const unsigned char *dname,
- u32 *crc)
+static bool ext4_fc_add_dentry_tlv(struct super_block *sb, u32 *crc,
+ struct ext4_fc_dentry_update *fc_dentry)
{
struct ext4_fc_dentry_info fcd;
struct ext4_fc_tl tl;
+ int dlen = fc_dentry->fcd_name.len;
u8 *dst = ext4_fc_reserve_space(sb, sizeof(tl) + sizeof(fcd) + dlen,
crc);
if (!dst)
return false;
- fcd.fc_parent_ino = cpu_to_le32(parent_ino);
- fcd.fc_ino = cpu_to_le32(ino);
- tl.fc_tag = cpu_to_le16(tag);
+ fcd.fc_parent_ino = cpu_to_le32(fc_dentry->fcd_parent);
+ fcd.fc_ino = cpu_to_le32(fc_dentry->fcd_ino);
+ tl.fc_tag = cpu_to_le16(fc_dentry->fcd_op);
tl.fc_len = cpu_to_le16(sizeof(fcd) + dlen);
ext4_fc_memcpy(sb, dst, &tl, sizeof(tl), crc);
dst += sizeof(tl);
ext4_fc_memcpy(sb, dst, &fcd, sizeof(fcd), crc);
dst += sizeof(fcd);
- ext4_fc_memcpy(sb, dst, dname, dlen, crc);
+ ext4_fc_memcpy(sb, dst, fc_dentry->fcd_name.name, dlen, crc);
dst += dlen;
return true;
&sbi->s_fc_dentry_q[FC_Q_MAIN], fcd_list) {
if (fc_dentry->fcd_op != EXT4_FC_TAG_CREAT) {
spin_unlock(&sbi->s_fc_lock);
- if (!ext4_fc_add_dentry_tlv(
- sb, fc_dentry->fcd_op,
- fc_dentry->fcd_parent, fc_dentry->fcd_ino,
- fc_dentry->fcd_name.len,
- fc_dentry->fcd_name.name, crc)) {
+ if (!ext4_fc_add_dentry_tlv(sb, crc, fc_dentry)) {
ret = -ENOSPC;
goto lock_and_exit;
}
if (ret)
goto lock_and_exit;
- if (!ext4_fc_add_dentry_tlv(
- sb, fc_dentry->fcd_op,
- fc_dentry->fcd_parent, fc_dentry->fcd_ino,
- fc_dentry->fcd_name.len,
- fc_dentry->fcd_name.name, crc)) {
+ if (!ext4_fc_add_dentry_tlv(sb, crc, fc_dentry)) {
ret = -ENOSPC;
goto lock_and_exit;
}
if (IS_ERR(handle))
goto out;
BUFFER_TRACE(sbi->s_sbh, "get_write_access");
- err = ext4_journal_get_write_access(handle, sbi->s_sbh);
+ err = ext4_journal_get_write_access(handle, sb, sbi->s_sbh,
+ EXT4_JTR_NONE);
if (err)
goto out_journal;
lock_buffer(sbi->s_sbh);
}
BUFFER_TRACE(bitmap_bh, "get_write_access");
- fatal = ext4_journal_get_write_access(handle, bitmap_bh);
+ fatal = ext4_journal_get_write_access(handle, sb, bitmap_bh,
+ EXT4_JTR_NONE);
if (fatal)
goto error_return;
gdp = ext4_get_group_desc(sb, block_group, &bh2);
if (gdp) {
BUFFER_TRACE(bh2, "get_write_access");
- fatal = ext4_journal_get_write_access(handle, bh2);
+ fatal = ext4_journal_get_write_access(handle, sb, bh2,
+ EXT4_JTR_NONE);
}
ext4_lock_group(sb, block_group);
cleared = ext4_test_and_clear_bit(bit, bitmap_bh->b_data);
}
}
BUFFER_TRACE(inode_bitmap_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, inode_bitmap_bh);
+ err = ext4_journal_get_write_access(handle, sb, inode_bitmap_bh,
+ EXT4_JTR_NONE);
if (err) {
ext4_std_error(sb, err);
goto out;
}
BUFFER_TRACE(group_desc_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, group_desc_bh);
+ err = ext4_journal_get_write_access(handle, sb, group_desc_bh,
+ EXT4_JTR_NONE);
if (err) {
ext4_std_error(sb, err);
goto out;
goto out;
}
BUFFER_TRACE(block_bitmap_bh, "get block bitmap access");
- err = ext4_journal_get_write_access(handle, block_bitmap_bh);
+ err = ext4_journal_get_write_access(handle, sb, block_bitmap_bh,
+ EXT4_JTR_NONE);
if (err) {
brelse(block_bitmap_bh);
ext4_std_error(sb, err);
num = sbi->s_itb_per_group - used_blks;
BUFFER_TRACE(group_desc_bh, "get_write_access");
- ret = ext4_journal_get_write_access(handle,
- group_desc_bh);
+ ret = ext4_journal_get_write_access(handle, sb, group_desc_bh,
+ EXT4_JTR_NONE);
if (ret)
goto err_out;
}
lock_buffer(bh);
BUFFER_TRACE(bh, "call get_create_access");
- err = ext4_journal_get_create_access(handle, bh);
+ err = ext4_journal_get_create_access(handle, ar->inode->i_sb,
+ bh, EXT4_JTR_NONE);
if (err) {
unlock_buffer(bh);
goto failed;
*/
if (where->bh) {
BUFFER_TRACE(where->bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, where->bh);
+ err = ext4_journal_get_write_access(handle, ar->inode->i_sb,
+ where->bh, EXT4_JTR_NONE);
if (err)
goto err_out;
}
return ret;
if (bh) {
BUFFER_TRACE(bh, "retaking write access");
- ret = ext4_journal_get_write_access(handle, bh);
+ ret = ext4_journal_get_write_access(handle, inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (unlikely(ret))
return ret;
}
if (this_bh) { /* For indirect block */
BUFFER_TRACE(this_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, this_bh);
+ err = ext4_journal_get_write_access(handle, inode->i_sb,
+ this_bh, EXT4_JTR_NONE);
/* Important: if we can't update the indirect pointers
* to the blocks, we can't free them. */
if (err)
*/
BUFFER_TRACE(parent_bh, "get_write_access");
if (!ext4_journal_get_write_access(handle,
- parent_bh)){
+ inode->i_sb, parent_bh,
+ EXT4_JTR_NONE)) {
*p = 0;
BUFFER_TRACE(parent_bh,
"call ext4_handle_dirty_metadata");
return error;
BUFFER_TRACE(is.iloc.bh, "get_write_access");
- error = ext4_journal_get_write_access(handle, is.iloc.bh);
+ error = ext4_journal_get_write_access(handle, inode->i_sb, is.iloc.bh,
+ EXT4_JTR_NONE);
if (error)
goto out;
goto out;
BUFFER_TRACE(is.iloc.bh, "get_write_access");
- error = ext4_journal_get_write_access(handle, is.iloc.bh);
+ error = ext4_journal_get_write_access(handle, inode->i_sb, is.iloc.bh,
+ EXT4_JTR_NONE);
if (error)
goto out;
goto out;
BUFFER_TRACE(is.iloc.bh, "get_write_access");
- error = ext4_journal_get_write_access(handle, is.iloc.bh);
+ error = ext4_journal_get_write_access(handle, inode->i_sb, is.iloc.bh,
+ EXT4_JTR_NONE);
if (error)
goto out;
ret = __block_write_begin(page, from, to, ext4_get_block);
if (!ret && ext4_should_journal_data(inode)) {
- ret = ext4_walk_page_buffers(handle, page_buffers(page),
+ ret = ext4_walk_page_buffers(handle, inode, page_buffers(page),
from, to, NULL,
do_journal_get_write_access);
}
goto convert;
}
- ret = ext4_journal_get_write_access(handle, iloc.bh);
+ ret = ext4_journal_get_write_access(handle, inode->i_sb, iloc.bh,
+ EXT4_JTR_NONE);
if (ret)
goto out;
ext4_write_lock_xattr(inode, &no_expand);
BUG_ON(!ext4_has_inline_data(inode));
+ /*
+ * ei->i_inline_off may have changed since ext4_write_begin()
+ * called ext4_try_to_write_inline_data()
+ */
+ (void) ext4_find_inline_data_nolock(inode);
+
kaddr = kmap_atomic(page);
ext4_write_inline_data(inode, &iloc, kaddr, pos, len);
kunmap_atomic(kaddr);
if (ret < 0)
goto out_release_page;
}
- ret = ext4_journal_get_write_access(handle, iloc.bh);
+ ret = ext4_journal_get_write_access(handle, inode->i_sb, iloc.bh,
+ EXT4_JTR_NONE);
if (ret)
goto out_release_page;
return err;
BUFFER_TRACE(iloc->bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, iloc->bh);
+ err = ext4_journal_get_write_access(handle, dir->i_sb, iloc->bh,
+ EXT4_JTR_NONE);
if (err)
return err;
ext4_insert_dentry(dir, inode, de, inline_size, fname);
}
lock_buffer(data_bh);
- error = ext4_journal_get_create_access(handle, data_bh);
+ error = ext4_journal_get_create_access(handle, inode->i_sb, data_bh,
+ EXT4_JTR_NONE);
if (error) {
unlock_buffer(data_bh);
error = -EIO;
}
BUFFER_TRACE(bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle, dir->i_sb, bh,
+ EXT4_JTR_NONE);
if (err)
goto out;
static void ext4_invalidatepage(struct page *page, unsigned int offset,
unsigned int length);
static int __ext4_journalled_writepage(struct page *page, unsigned int len);
-static int ext4_bh_delay_or_unwritten(handle_t *handle, struct buffer_head *bh);
static int ext4_meta_trans_blocks(struct inode *inode, int lblocks,
int pextents);
*/
lock_buffer(bh);
BUFFER_TRACE(bh, "call get_create_access");
- err = ext4_journal_get_create_access(handle, bh);
+ err = ext4_journal_get_create_access(handle, inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (unlikely(err)) {
unlock_buffer(bh);
goto errout;
return err;
}
-int ext4_walk_page_buffers(handle_t *handle,
+int ext4_walk_page_buffers(handle_t *handle, struct inode *inode,
struct buffer_head *head,
unsigned from,
unsigned to,
int *partial,
- int (*fn)(handle_t *handle,
+ int (*fn)(handle_t *handle, struct inode *inode,
struct buffer_head *bh))
{
struct buffer_head *bh;
*partial = 1;
continue;
}
- err = (*fn)(handle, bh);
+ err = (*fn)(handle, inode, bh);
if (!ret)
ret = err;
}
* is elevated. We'll still have enough credits for the tiny quotafile
* write.
*/
-int do_journal_get_write_access(handle_t *handle,
+int do_journal_get_write_access(handle_t *handle, struct inode *inode,
struct buffer_head *bh)
{
int dirty = buffer_dirty(bh);
if (dirty)
clear_buffer_dirty(bh);
BUFFER_TRACE(bh, "get write access");
- ret = ext4_journal_get_write_access(handle, bh);
+ ret = ext4_journal_get_write_access(handle, inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (!ret && dirty)
ret = ext4_handle_dirty_metadata(handle, NULL, bh);
return ret;
ret = __block_write_begin(page, pos, len, ext4_get_block);
#endif
if (!ret && ext4_should_journal_data(inode)) {
- ret = ext4_walk_page_buffers(handle, page_buffers(page),
- from, to, NULL,
+ ret = ext4_walk_page_buffers(handle, inode,
+ page_buffers(page), from, to, NULL,
do_journal_get_write_access);
}
}
/* For write_end() in data=journal mode */
-static int write_end_fn(handle_t *handle, struct buffer_head *bh)
+static int write_end_fn(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh)
{
int ret;
if (!buffer_mapped(bh) || buffer_freed(bh))
* to call ext4_handle_dirty_metadata() instead.
*/
static void ext4_journalled_zero_new_buffers(handle_t *handle,
+ struct inode *inode,
struct page *page,
unsigned from, unsigned to)
{
size = min(to, block_end) - start;
zero_user(page, start, size);
- write_end_fn(handle, bh);
+ write_end_fn(handle, inode, bh);
}
clear_buffer_new(bh);
}
copied = ret;
} else if (unlikely(copied < len) && !PageUptodate(page)) {
copied = 0;
- ext4_journalled_zero_new_buffers(handle, page, from, to);
+ ext4_journalled_zero_new_buffers(handle, inode, page, from, to);
} else {
if (unlikely(copied < len))
- ext4_journalled_zero_new_buffers(handle, page,
+ ext4_journalled_zero_new_buffers(handle, inode, page,
from + copied, to);
- ret = ext4_walk_page_buffers(handle, page_buffers(page), from,
- from + copied, &partial,
+ ret = ext4_walk_page_buffers(handle, inode, page_buffers(page),
+ from, from + copied, &partial,
write_end_fn);
if (!partial)
SetPageUptodate(page);
return;
}
-static int ext4_bh_delay_or_unwritten(handle_t *handle, struct buffer_head *bh)
+static int ext4_bh_delay_or_unwritten(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh)
{
return (buffer_delay(bh) || buffer_unwritten(bh)) && buffer_dirty(bh);
}
return 0;
}
-static int bget_one(handle_t *handle, struct buffer_head *bh)
+static int bget_one(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh)
{
get_bh(bh);
return 0;
}
-static int bput_one(handle_t *handle, struct buffer_head *bh)
+static int bput_one(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh)
{
put_bh(bh);
return 0;
BUG();
goto out;
}
- ext4_walk_page_buffers(handle, page_bufs, 0, len,
+ ext4_walk_page_buffers(handle, inode, page_bufs, 0, len,
NULL, bget_one);
}
/*
if (inline_data) {
ret = ext4_mark_inode_dirty(handle, inode);
} else {
- ret = ext4_walk_page_buffers(handle, page_bufs, 0, len, NULL,
- do_journal_get_write_access);
+ ret = ext4_walk_page_buffers(handle, inode, page_bufs, 0, len,
+ NULL, do_journal_get_write_access);
- err = ext4_walk_page_buffers(handle, page_bufs, 0, len, NULL,
- write_end_fn);
+ err = ext4_walk_page_buffers(handle, inode, page_bufs, 0, len,
+ NULL, write_end_fn);
}
if (ret == 0)
ret = err;
unlock_page(page);
out_no_pagelock:
if (!inline_data && page_bufs)
- ext4_walk_page_buffers(NULL, page_bufs, 0, len,
+ ext4_walk_page_buffers(NULL, inode, page_bufs, 0, len,
NULL, bput_one);
brelse(inode_bh);
return ret;
* for the extremely common case, this is an optimization that
* skips a useless round trip through ext4_bio_write_page().
*/
- if (ext4_walk_page_buffers(NULL, page_bufs, 0, len, NULL,
+ if (ext4_walk_page_buffers(NULL, inode, page_bufs, 0, len, NULL,
ext4_bh_delay_or_unwritten)) {
redirty_page_for_writepage(wbc, page);
if ((current->flags & PF_MEMALLOC) ||
}
if (ext4_should_journal_data(inode)) {
BUFFER_TRACE(bh, "get write access");
- err = ext4_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle, inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (err)
goto unlock;
}
bh = sb_getblk(sb, block);
if (unlikely(!bh))
return -ENOMEM;
- if (ext4_simulate_fail(sb, EXT4_SIM_INODE_EIO))
- goto simulate_eio;
- if (!buffer_uptodate(bh)) {
- lock_buffer(bh);
+ if (ext4_buffer_uptodate(bh))
+ goto has_buffer;
- if (ext4_buffer_uptodate(bh)) {
- /* someone brought it uptodate while we waited */
- unlock_buffer(bh);
- goto has_buffer;
- }
-
- /*
- * If we have all information of the inode in memory and this
- * is the only valid inode in the block, we need not read the
- * block.
- */
- if (in_mem) {
- struct buffer_head *bitmap_bh;
- int i, start;
+ lock_buffer(bh);
+ /*
+ * If we have all information of the inode in memory and this
+ * is the only valid inode in the block, we need not read the
+ * block.
+ */
+ if (in_mem) {
+ struct buffer_head *bitmap_bh;
+ int i, start;
- start = inode_offset & ~(inodes_per_block - 1);
+ start = inode_offset & ~(inodes_per_block - 1);
- /* Is the inode bitmap in cache? */
- bitmap_bh = sb_getblk(sb, ext4_inode_bitmap(sb, gdp));
- if (unlikely(!bitmap_bh))
- goto make_io;
+ /* Is the inode bitmap in cache? */
+ bitmap_bh = sb_getblk(sb, ext4_inode_bitmap(sb, gdp));
+ if (unlikely(!bitmap_bh))
+ goto make_io;
- /*
- * If the inode bitmap isn't in cache then the
- * optimisation may end up performing two reads instead
- * of one, so skip it.
- */
- if (!buffer_uptodate(bitmap_bh)) {
- brelse(bitmap_bh);
- goto make_io;
- }
- for (i = start; i < start + inodes_per_block; i++) {
- if (i == inode_offset)
- continue;
- if (ext4_test_bit(i, bitmap_bh->b_data))
- break;
- }
+ /*
+ * If the inode bitmap isn't in cache then the
+ * optimisation may end up performing two reads instead
+ * of one, so skip it.
+ */
+ if (!buffer_uptodate(bitmap_bh)) {
brelse(bitmap_bh);
- if (i == start + inodes_per_block) {
- /* all other inodes are free, so skip I/O */
- memset(bh->b_data, 0, bh->b_size);
- set_buffer_uptodate(bh);
- unlock_buffer(bh);
- goto has_buffer;
- }
+ goto make_io;
}
+ for (i = start; i < start + inodes_per_block; i++) {
+ if (i == inode_offset)
+ continue;
+ if (ext4_test_bit(i, bitmap_bh->b_data))
+ break;
+ }
+ brelse(bitmap_bh);
+ if (i == start + inodes_per_block) {
+ /* all other inodes are free, so skip I/O */
+ memset(bh->b_data, 0, bh->b_size);
+ set_buffer_uptodate(bh);
+ unlock_buffer(bh);
+ goto has_buffer;
+ }
+ }
make_io:
- /*
- * If we need to do any I/O, try to pre-readahead extra
- * blocks from the inode table.
- */
- blk_start_plug(&plug);
- if (EXT4_SB(sb)->s_inode_readahead_blks) {
- ext4_fsblk_t b, end, table;
- unsigned num;
- __u32 ra_blks = EXT4_SB(sb)->s_inode_readahead_blks;
-
- table = ext4_inode_table(sb, gdp);
- /* s_inode_readahead_blks is always a power of 2 */
- b = block & ~((ext4_fsblk_t) ra_blks - 1);
- if (table > b)
- b = table;
- end = b + ra_blks;
- num = EXT4_INODES_PER_GROUP(sb);
- if (ext4_has_group_desc_csum(sb))
- num -= ext4_itable_unused_count(sb, gdp);
- table += num / inodes_per_block;
- if (end > table)
- end = table;
- while (b <= end)
- ext4_sb_breadahead_unmovable(sb, b++);
- }
+ /*
+ * If we need to do any I/O, try to pre-readahead extra
+ * blocks from the inode table.
+ */
+ blk_start_plug(&plug);
+ if (EXT4_SB(sb)->s_inode_readahead_blks) {
+ ext4_fsblk_t b, end, table;
+ unsigned num;
+ __u32 ra_blks = EXT4_SB(sb)->s_inode_readahead_blks;
+
+ table = ext4_inode_table(sb, gdp);
+ /* s_inode_readahead_blks is always a power of 2 */
+ b = block & ~((ext4_fsblk_t) ra_blks - 1);
+ if (table > b)
+ b = table;
+ end = b + ra_blks;
+ num = EXT4_INODES_PER_GROUP(sb);
+ if (ext4_has_group_desc_csum(sb))
+ num -= ext4_itable_unused_count(sb, gdp);
+ table += num / inodes_per_block;
+ if (end > table)
+ end = table;
+ while (b <= end)
+ ext4_sb_breadahead_unmovable(sb, b++);
+ }
- /*
- * There are other valid inodes in the buffer, this inode
- * has in-inode xattrs, or we don't have this inode in memory.
- * Read the block from disk.
- */
- trace_ext4_load_inode(sb, ino);
- ext4_read_bh_nowait(bh, REQ_META | REQ_PRIO, NULL);
- blk_finish_plug(&plug);
- wait_on_buffer(bh);
- if (!buffer_uptodate(bh)) {
- simulate_eio:
- if (ret_block)
- *ret_block = block;
- brelse(bh);
- return -EIO;
- }
+ /*
+ * There are other valid inodes in the buffer, this inode
+ * has in-inode xattrs, or we don't have this inode in memory.
+ * Read the block from disk.
+ */
+ trace_ext4_load_inode(sb, ino);
+ ext4_read_bh_nowait(bh, REQ_META | REQ_PRIO, NULL);
+ blk_finish_plug(&plug);
+ wait_on_buffer(bh);
+ ext4_simulate_fail_bh(sb, bh, EXT4_SIM_INODE_EIO);
+ if (!buffer_uptodate(bh)) {
+ if (ret_block)
+ *ret_block = block;
+ brelse(bh);
+ return -EIO;
}
has_buffer:
iloc->bh = bh;
struct ext4_iloc iloc;
struct ext4_inode *raw_inode;
struct ext4_inode_info *ei;
+ struct ext4_super_block *es = EXT4_SB(sb)->s_es;
struct inode *inode;
journal_t *journal = EXT4_SB(sb)->s_journal;
long ret;
projid_t i_projid;
if ((!(flags & EXT4_IGET_SPECIAL) &&
- (ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO)) ||
+ ((ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO) ||
+ ino == le32_to_cpu(es->s_usr_quota_inum) ||
+ ino == le32_to_cpu(es->s_grp_quota_inum) ||
+ ino == le32_to_cpu(es->s_prj_quota_inum) ||
+ ino == le32_to_cpu(es->s_orphan_file_inum))) ||
(ino < EXT4_ROOT_INO) ||
- (ino > le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count))) {
+ (ino > le32_to_cpu(es->s_inodes_count))) {
if (flags & EXT4_IGET_HANDLE)
return ERR_PTR(-ESTALE);
__ext4_error(sb, function, line, false, EFSCORRUPTED, 0,
ext4_clear_inode_flag(inode, EXT4_INODE_HUGE_FILE);
return 0;
}
+
+ /*
+ * This should never happen since sb->s_maxbytes should not have
+ * allowed this, sb->s_maxbytes was set according to the huge_file
+ * feature in ext4_fill_super().
+ */
if (!ext4_has_feature_huge_file(sb))
- return -EFBIG;
+ return -EFSCORRUPTED;
if (i_blocks <= 0xffffffffffffULL) {
/*
spin_lock(&ei->i_raw_lock);
- /* For fields not tracked in the in-memory inode,
- * initialise them to zero for new inodes. */
+ /*
+ * For fields not tracked in the in-memory inode, initialise them
+ * to zero for new inodes.
+ */
if (ext4_test_inode_state(inode, EXT4_STATE_NEW))
memset(raw_inode, 0, EXT4_SB(inode->i_sb)->s_inode_size);
err = ext4_inode_blocks_set(handle, raw_inode, ei);
- if (err) {
- spin_unlock(&ei->i_raw_lock);
- goto out_brelse;
- }
raw_inode->i_mode = cpu_to_le16(inode->i_mode);
i_uid = i_uid_read(inode);
if (!(test_opt(inode->i_sb, NO_UID32))) {
raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid));
raw_inode->i_gid_low = cpu_to_le16(low_16_bits(i_gid));
-/*
- * Fix up interoperability with old kernels. Otherwise, old inodes get
- * re-used with the upper 16 bits of the uid/gid intact
- */
+ /*
+ * Fix up interoperability with old kernels. Otherwise,
+ * old inodes get re-used with the upper 16 bits of the
+ * uid/gid intact.
+ */
if (ei->i_dtime && list_empty(&ei->i_orphan)) {
raw_inode->i_uid_high = 0;
raw_inode->i_gid_high = 0;
}
}
- BUG_ON(!ext4_has_feature_project(inode->i_sb) &&
- i_projid != EXT4_DEF_PROJID);
+ if (i_projid != EXT4_DEF_PROJID &&
+ !ext4_has_feature_project(inode->i_sb))
+ err = err ?: -EFSCORRUPTED;
if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE &&
EXT4_FITS_IN_INODE(raw_inode, ei, i_projid))
ext4_inode_csum_set(inode, raw_inode, ei);
spin_unlock(&ei->i_raw_lock);
+ if (err) {
+ EXT4_ERROR_INODE(inode, "corrupted inode contents");
+ goto out_brelse;
+ }
+
if (inode->i_sb->s_flags & SB_LAZYTIME)
ext4_update_other_inodes_time(inode->i_sb, inode->i_ino,
bh->b_data);
BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
err = ext4_handle_dirty_metadata(handle, NULL, bh);
if (err)
- goto out_brelse;
+ goto out_error;
ext4_clear_inode_state(inode, EXT4_STATE_NEW);
if (set_large_file) {
BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get write access");
- err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh);
+ err = ext4_journal_get_write_access(handle, sb,
+ EXT4_SB(sb)->s_sbh,
+ EXT4_JTR_NONE);
if (err)
- goto out_brelse;
+ goto out_error;
lock_buffer(EXT4_SB(sb)->s_sbh);
ext4_set_feature_large_file(sb);
ext4_superblock_csum_set(sb);
EXT4_SB(sb)->s_sbh);
}
ext4_update_inode_fsync_trans(handle, inode, need_datasync);
+out_error:
+ ext4_std_error(inode->i_sb, err);
out_brelse:
brelse(bh);
- ext4_std_error(inode->i_sb, err);
return err;
}
err = ext4_get_inode_loc(inode, iloc);
if (!err) {
BUFFER_TRACE(iloc->bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, iloc->bh);
+ err = ext4_journal_get_write_access(handle, inode->i_sb,
+ iloc->bh, EXT4_JTR_NONE);
if (err) {
brelse(iloc->bh);
iloc->bh = NULL;
ext4_write_lock_xattr(inode, &no_expand);
BUFFER_TRACE(iloc->bh, "get_write_access");
- error = ext4_journal_get_write_access(handle, iloc->bh);
+ error = ext4_journal_get_write_access(handle, inode->i_sb, iloc->bh,
+ EXT4_JTR_NONE);
if (error) {
brelse(iloc->bh);
goto out_unlock;
return err;
}
-static int ext4_bh_unmapped(handle_t *handle, struct buffer_head *bh)
+static int ext4_bh_unmapped(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh)
{
return !buffer_mapped(bh);
}
* inode to the transaction's list to writeprotect pages on commit.
*/
if (page_has_buffers(page)) {
- if (!ext4_walk_page_buffers(NULL, page_buffers(page),
+ if (!ext4_walk_page_buffers(NULL, inode, page_buffers(page),
0, len, NULL,
ext4_bh_unmapped)) {
/* Wait so that we don't change page under IO */
err = __block_write_begin(page, 0, len, ext4_get_block);
if (!err) {
ret = VM_FAULT_SIGBUS;
- if (ext4_walk_page_buffers(handle, page_buffers(page),
- 0, len, NULL, do_journal_get_write_access))
+ if (ext4_walk_page_buffers(handle, inode,
+ page_buffers(page), 0, len, NULL,
+ do_journal_get_write_access))
goto out_error;
- if (ext4_walk_page_buffers(handle, page_buffers(page),
- 0, len, NULL, write_end_fn))
+ if (ext4_walk_page_buffers(handle, inode,
+ page_buffers(page), 0, len, NULL,
+ write_end_fn))
goto out_error;
if (ext4_jbd2_inode_add_write(handle, inode,
page_offset(page), len))
err = PTR_ERR(handle);
goto pwsalt_err_exit;
}
- err = ext4_journal_get_write_access(handle, sbi->s_sbh);
+ err = ext4_journal_get_write_access(handle, sb,
+ sbi->s_sbh,
+ EXT4_JTR_NONE);
if (err)
goto pwsalt_err_journal;
lock_buffer(sbi->s_sbh);
static bool ext4_mb_good_group(struct ext4_allocation_context *ac,
ext4_group_t group, int cr);
+static int ext4_try_to_trim_range(struct super_block *sb,
+ struct ext4_buddy *e4b, ext4_grpblk_t start,
+ ext4_grpblk_t max, ext4_grpblk_t minblocks);
+
/*
* The algorithm using this percpu seq counter goes below:
* 1. We sample the percpu discard_pa_seq counter before trying for block
* This could return negative error code if something goes wrong
* during ext4_mb_init_group(). This should not be called with
* ext4_lock_group() held.
+ *
+ * Note: because we are conditionally operating with the group lock in
+ * the EXT4_MB_STRICT_CHECK case, we need to fake out sparse in this
+ * function using __acquire and __release. This means we need to be
+ * super careful before messing with the error path handling via "goto
+ * out"!
*/
static int ext4_mb_good_group_nolock(struct ext4_allocation_context *ac,
ext4_group_t group, int cr)
if (sbi->s_mb_stats)
atomic64_inc(&sbi->s_bal_cX_groups_considered[ac->ac_criteria]);
- if (should_lock)
+ if (should_lock) {
ext4_lock_group(sb, group);
+ __release(ext4_group_lock_ptr(sb, group));
+ }
free = grp->bb_free;
if (free == 0)
goto out;
goto out;
if (unlikely(EXT4_MB_GRP_BBITMAP_CORRUPT(grp)))
goto out;
- if (should_lock)
+ if (should_lock) {
+ __acquire(ext4_group_lock_ptr(sb, group));
ext4_unlock_group(sb, group);
+ }
/* We only do this if the grp has never been initialized */
if (unlikely(EXT4_MB_GRP_NEED_INIT(grp))) {
return ret;
}
- if (should_lock)
+ if (should_lock) {
ext4_lock_group(sb, group);
+ __release(ext4_group_lock_ptr(sb, group));
+ }
ret = ext4_mb_good_group(ac, group, cr);
out:
- if (should_lock)
+ if (should_lock) {
+ __acquire(ext4_group_lock_ptr(sb, group));
ext4_unlock_group(sb, group);
+ }
return ret;
}
}
static void *ext4_mb_seq_structs_summary_start(struct seq_file *seq, loff_t *pos)
+__acquires(&EXT4_SB(sb)->s_mb_rb_lock)
{
struct super_block *sb = PDE_DATA(file_inode(seq->file));
unsigned long position;
}
static void ext4_mb_seq_structs_summary_stop(struct seq_file *seq, void *v)
+__releases(&EXT4_SB(sb)->s_mb_rb_lock)
{
struct super_block *sb = PDE_DATA(file_inode(seq->file));
return 0;
}
+static void ext4_discard_work(struct work_struct *work)
+{
+ struct ext4_sb_info *sbi = container_of(work,
+ struct ext4_sb_info, s_discard_work);
+ struct super_block *sb = sbi->s_sb;
+ struct ext4_free_data *fd, *nfd;
+ struct ext4_buddy e4b;
+ struct list_head discard_list;
+ ext4_group_t grp, load_grp;
+ int err = 0;
+
+ INIT_LIST_HEAD(&discard_list);
+ spin_lock(&sbi->s_md_lock);
+ list_splice_init(&sbi->s_discard_list, &discard_list);
+ spin_unlock(&sbi->s_md_lock);
+
+ load_grp = UINT_MAX;
+ list_for_each_entry_safe(fd, nfd, &discard_list, efd_list) {
+ /*
+ * If filesystem is umounting or no memory or suffering
+ * from no space, give up the discard
+ */
+ if ((sb->s_flags & SB_ACTIVE) && !err &&
+ !atomic_read(&sbi->s_retry_alloc_pending)) {
+ grp = fd->efd_group;
+ if (grp != load_grp) {
+ if (load_grp != UINT_MAX)
+ ext4_mb_unload_buddy(&e4b);
+
+ err = ext4_mb_load_buddy(sb, grp, &e4b);
+ if (err) {
+ kmem_cache_free(ext4_free_data_cachep, fd);
+ load_grp = UINT_MAX;
+ continue;
+ } else {
+ load_grp = grp;
+ }
+ }
+
+ ext4_lock_group(sb, grp);
+ ext4_try_to_trim_range(sb, &e4b, fd->efd_start_cluster,
+ fd->efd_start_cluster + fd->efd_count - 1, 1);
+ ext4_unlock_group(sb, grp);
+ }
+ kmem_cache_free(ext4_free_data_cachep, fd);
+ }
+
+ if (load_grp != UINT_MAX)
+ ext4_mb_unload_buddy(&e4b);
+}
+
int ext4_mb_init(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
spin_lock_init(&sbi->s_md_lock);
sbi->s_mb_free_pending = 0;
INIT_LIST_HEAD(&sbi->s_freed_data_list);
+ INIT_LIST_HEAD(&sbi->s_discard_list);
+ INIT_WORK(&sbi->s_discard_work, ext4_discard_work);
+ atomic_set(&sbi->s_retry_alloc_pending, 0);
sbi->s_mb_max_to_scan = MB_DEFAULT_MAX_TO_SCAN;
sbi->s_mb_min_to_scan = MB_DEFAULT_MIN_TO_SCAN;
struct kmem_cache *cachep = get_groupinfo_cache(sb->s_blocksize_bits);
int count;
+ if (test_opt(sb, DISCARD)) {
+ /*
+ * wait the discard work to drain all of ext4_free_data
+ */
+ flush_work(&sbi->s_discard_work);
+ WARN_ON_ONCE(!list_empty(&sbi->s_discard_list));
+ }
+
if (sbi->s_group_info) {
for (i = 0; i < ngroups; i++) {
cond_resched();
put_page(e4b.bd_bitmap_page);
}
ext4_unlock_group(sb, entry->efd_group);
- kmem_cache_free(ext4_free_data_cachep, entry);
ext4_mb_unload_buddy(&e4b);
mb_debug(sb, "freed %d blocks in %d structures\n", count,
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_free_data *entry, *tmp;
- struct bio *discard_bio = NULL;
struct list_head freed_data_list;
struct list_head *cut_pos = NULL;
- int err;
+ bool wake;
INIT_LIST_HEAD(&freed_data_list);
cut_pos);
spin_unlock(&sbi->s_md_lock);
- if (test_opt(sb, DISCARD)) {
- list_for_each_entry(entry, &freed_data_list, efd_list) {
- err = ext4_issue_discard(sb, entry->efd_group,
- entry->efd_start_cluster,
- entry->efd_count,
- &discard_bio);
- if (err && err != -EOPNOTSUPP) {
- ext4_msg(sb, KERN_WARNING, "discard request in"
- " group:%d block:%d count:%d failed"
- " with %d", entry->efd_group,
- entry->efd_start_cluster,
- entry->efd_count, err);
- } else if (err == -EOPNOTSUPP)
- break;
- }
+ list_for_each_entry(entry, &freed_data_list, efd_list)
+ ext4_free_data_in_buddy(sb, entry);
- if (discard_bio) {
- submit_bio_wait(discard_bio);
- bio_put(discard_bio);
- }
+ if (test_opt(sb, DISCARD)) {
+ spin_lock(&sbi->s_md_lock);
+ wake = list_empty(&sbi->s_discard_list);
+ list_splice_tail(&freed_data_list, &sbi->s_discard_list);
+ spin_unlock(&sbi->s_md_lock);
+ if (wake)
+ queue_work(system_unbound_wq, &sbi->s_discard_work);
+ } else {
+ list_for_each_entry_safe(entry, tmp, &freed_data_list, efd_list)
+ kmem_cache_free(ext4_free_data_cachep, entry);
}
-
- list_for_each_entry_safe(entry, tmp, &freed_data_list, efd_list)
- ext4_free_data_in_buddy(sb, entry);
}
int __init ext4_init_mballoc(void)
}
BUFFER_TRACE(bitmap_bh, "getting write access");
- err = ext4_journal_get_write_access(handle, bitmap_bh);
+ err = ext4_journal_get_write_access(handle, sb, bitmap_bh,
+ EXT4_JTR_NONE);
if (err)
goto out_err;
ext4_free_group_clusters(sb, gdp));
BUFFER_TRACE(gdp_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, gdp_bh);
+ err = ext4_journal_get_write_access(handle, sb, gdp_bh, EXT4_JTR_NONE);
if (err)
goto out_err;
}
BUFFER_TRACE(bitmap_bh, "getting write access");
- err = ext4_journal_get_write_access(handle, bitmap_bh);
+ err = ext4_journal_get_write_access(handle, sb, bitmap_bh,
+ EXT4_JTR_NONE);
if (err)
goto error_return;
* using it
*/
BUFFER_TRACE(gd_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, gd_bh);
+ err = ext4_journal_get_write_access(handle, sb, gd_bh, EXT4_JTR_NONE);
if (err)
goto error_return;
#ifdef AGGRESSIVE_CHECK
}
BUFFER_TRACE(bitmap_bh, "getting write access");
- err = ext4_journal_get_write_access(handle, bitmap_bh);
+ err = ext4_journal_get_write_access(handle, sb, bitmap_bh,
+ EXT4_JTR_NONE);
if (err)
goto error_return;
* using it
*/
BUFFER_TRACE(gd_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, gd_bh);
+ err = ext4_journal_get_write_access(handle, sb, gd_bh, EXT4_JTR_NONE);
if (err)
goto error_return;
* @sb: super block for the file system
* @start: starting block of the free extent in the alloc. group
* @count: number of blocks to TRIM
- * @group: alloc. group we are working with
* @e4b: ext4 buddy for the group
*
* Trim "count" blocks starting at "start" in the "group". To assure that no
* one will allocate those blocks, mark it as used in buddy bitmap. This must
* be called with under the group lock.
*/
-static int ext4_trim_extent(struct super_block *sb, int start, int count,
- ext4_group_t group, struct ext4_buddy *e4b)
+static int ext4_trim_extent(struct super_block *sb,
+ int start, int count, struct ext4_buddy *e4b)
__releases(bitlock)
__acquires(bitlock)
{
struct ext4_free_extent ex;
+ ext4_group_t group = e4b->bd_group;
int ret = 0;
trace_ext4_trim_extent(sb, group, start, count);
return ret;
}
-/**
- * ext4_trim_all_free -- function to trim all free space in alloc. group
- * @sb: super block for file system
- * @group: group to be trimmed
- * @start: first group block to examine
- * @max: last group block to examine
- * @minblocks: minimum extent block count
- *
- * ext4_trim_all_free walks through group's buddy bitmap searching for free
- * extents. When the free block is found, ext4_trim_extent is called to TRIM
- * the extent.
- *
- *
- * ext4_trim_all_free walks through group's block bitmap searching for free
- * extents. When the free extent is found, mark it as used in group buddy
- * bitmap. Then issue a TRIM command on this extent and free the extent in
- * the group buddy bitmap. This is done until whole group is scanned.
- */
-static ext4_grpblk_t
-ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
- ext4_grpblk_t start, ext4_grpblk_t max,
- ext4_grpblk_t minblocks)
+static int ext4_try_to_trim_range(struct super_block *sb,
+ struct ext4_buddy *e4b, ext4_grpblk_t start,
+ ext4_grpblk_t max, ext4_grpblk_t minblocks)
+__acquires(ext4_group_lock_ptr(sb, e4b->bd_group))
+__releases(ext4_group_lock_ptr(sb, e4b->bd_group))
{
+ ext4_grpblk_t next, count, free_count;
void *bitmap;
- ext4_grpblk_t next, count = 0, free_count = 0;
- struct ext4_buddy e4b;
int ret = 0;
- trace_ext4_trim_all_free(sb, group, start, max);
-
- ret = ext4_mb_load_buddy(sb, group, &e4b);
- if (ret) {
- ext4_warning(sb, "Error %d loading buddy information for %u",
- ret, group);
- return ret;
- }
- bitmap = e4b.bd_bitmap;
-
- ext4_lock_group(sb, group);
- if (EXT4_MB_GRP_WAS_TRIMMED(e4b.bd_info) &&
- minblocks >= atomic_read(&EXT4_SB(sb)->s_last_trim_minblks))
- goto out;
-
- start = (e4b.bd_info->bb_first_free > start) ?
- e4b.bd_info->bb_first_free : start;
+ bitmap = e4b->bd_bitmap;
+ start = (e4b->bd_info->bb_first_free > start) ?
+ e4b->bd_info->bb_first_free : start;
+ count = 0;
+ free_count = 0;
while (start <= max) {
start = mb_find_next_zero_bit(bitmap, max + 1, start);
next = mb_find_next_bit(bitmap, max + 1, start);
if ((next - start) >= minblocks) {
- ret = ext4_trim_extent(sb, start,
- next - start, group, &e4b);
+ ret = ext4_trim_extent(sb, start, next - start, e4b);
if (ret && ret != -EOPNOTSUPP)
break;
ret = 0;
}
if (need_resched()) {
- ext4_unlock_group(sb, group);
+ ext4_unlock_group(sb, e4b->bd_group);
cond_resched();
- ext4_lock_group(sb, group);
+ ext4_lock_group(sb, e4b->bd_group);
}
- if ((e4b.bd_info->bb_free - free_count) < minblocks)
+ if ((e4b->bd_info->bb_free - free_count) < minblocks)
break;
}
- if (!ret) {
- ret = count;
- EXT4_MB_GRP_SET_TRIMMED(e4b.bd_info);
+ return count;
+}
+
+/**
+ * ext4_trim_all_free -- function to trim all free space in alloc. group
+ * @sb: super block for file system
+ * @group: group to be trimmed
+ * @start: first group block to examine
+ * @max: last group block to examine
+ * @minblocks: minimum extent block count
+ *
+ * ext4_trim_all_free walks through group's block bitmap searching for free
+ * extents. When the free extent is found, mark it as used in group buddy
+ * bitmap. Then issue a TRIM command on this extent and free the extent in
+ * the group buddy bitmap.
+ */
+static ext4_grpblk_t
+ext4_trim_all_free(struct super_block *sb, ext4_group_t group,
+ ext4_grpblk_t start, ext4_grpblk_t max,
+ ext4_grpblk_t minblocks)
+{
+ struct ext4_buddy e4b;
+ int ret;
+
+ trace_ext4_trim_all_free(sb, group, start, max);
+
+ ret = ext4_mb_load_buddy(sb, group, &e4b);
+ if (ret) {
+ ext4_warning(sb, "Error %d loading buddy information for %u",
+ ret, group);
+ return ret;
+ }
+
+ ext4_lock_group(sb, group);
+
+ if (!EXT4_MB_GRP_WAS_TRIMMED(e4b.bd_info) ||
+ minblocks < atomic_read(&EXT4_SB(sb)->s_last_trim_minblks)) {
+ ret = ext4_try_to_trim_range(sb, &e4b, start, max, minblocks);
+ if (ret >= 0)
+ EXT4_MB_GRP_SET_TRIMMED(e4b.bd_info);
+ } else {
+ ret = 0;
}
-out:
+
ext4_unlock_group(sb, group);
ext4_mb_unload_buddy(&e4b);
ext4_debug("trimmed %d blocks in the group %d\n",
- count, group);
+ ret, group);
return ret;
}
inode->i_size += inode->i_sb->s_blocksize;
EXT4_I(inode)->i_disksize = inode->i_size;
BUFFER_TRACE(bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle, inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (err) {
brelse(bh);
ext4_std_error(inode->i_sb, err);
}
BUFFER_TRACE(*bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, *bh);
+ err = ext4_journal_get_write_access(handle, dir->i_sb, *bh,
+ EXT4_JTR_NONE);
if (err)
goto journal_error;
BUFFER_TRACE(frame->bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, frame->bh);
+ err = ext4_journal_get_write_access(handle, dir->i_sb, frame->bh,
+ EXT4_JTR_NONE);
if (err)
goto journal_error;
return err;
}
BUFFER_TRACE(bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle, dir->i_sb, bh,
+ EXT4_JTR_NONE);
if (err) {
ext4_std_error(dir->i_sb, err);
return err;
blocksize = dir->i_sb->s_blocksize;
dxtrace(printk(KERN_DEBUG "Creating index: inode %lu\n", dir->i_ino));
BUFFER_TRACE(bh, "get_write_access");
- retval = ext4_journal_get_write_access(handle, bh);
+ retval = ext4_journal_get_write_access(handle, dir->i_sb, bh,
+ EXT4_JTR_NONE);
if (retval) {
ext4_std_error(dir->i_sb, retval);
brelse(bh);
}
BUFFER_TRACE(bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle, sb, bh, EXT4_JTR_NONE);
if (err)
goto journal_error;
node2->fake.rec_len = ext4_rec_len_to_disk(sb->s_blocksize,
sb->s_blocksize);
BUFFER_TRACE(frame->bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, frame->bh);
+ err = ext4_journal_get_write_access(handle, sb, frame->bh,
+ EXT4_JTR_NONE);
if (err)
goto journal_error;
if (!add_level) {
icount1, icount2));
BUFFER_TRACE(frame->bh, "get_write_access"); /* index root */
- err = ext4_journal_get_write_access(handle,
- (frame - 1)->bh);
+ err = ext4_journal_get_write_access(handle, sb,
+ (frame - 1)->bh,
+ EXT4_JTR_NONE);
if (err)
goto journal_error;
csum_size = sizeof(struct ext4_dir_entry_tail);
BUFFER_TRACE(bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle, dir->i_sb, bh,
+ EXT4_JTR_NONE);
if (unlikely(err))
goto out;
return true;
}
-/*
- * ext4_orphan_add() links an unlinked or truncated inode into a list of
- * such inodes, starting at the superblock, in case we crash before the
- * file is closed/deleted, or in case the inode truncate spans multiple
- * transactions and the last transaction is not recovered after a crash.
- *
- * At filesystem recovery time, we walk this list deleting unlinked
- * inodes and truncating linked inodes in ext4_orphan_cleanup().
- *
- * Orphan list manipulation functions must be called under i_mutex unless
- * we are just creating the inode or deleting it.
- */
-int ext4_orphan_add(handle_t *handle, struct inode *inode)
-{
- struct super_block *sb = inode->i_sb;
- struct ext4_sb_info *sbi = EXT4_SB(sb);
- struct ext4_iloc iloc;
- int err = 0, rc;
- bool dirty = false;
-
- if (!sbi->s_journal || is_bad_inode(inode))
- return 0;
-
- WARN_ON_ONCE(!(inode->i_state & (I_NEW | I_FREEING)) &&
- !inode_is_locked(inode));
- /*
- * Exit early if inode already is on orphan list. This is a big speedup
- * since we don't have to contend on the global s_orphan_lock.
- */
- if (!list_empty(&EXT4_I(inode)->i_orphan))
- return 0;
-
- /*
- * Orphan handling is only valid for files with data blocks
- * being truncated, or files being unlinked. Note that we either
- * hold i_mutex, or the inode can not be referenced from outside,
- * so i_nlink should not be bumped due to race
- */
- ASSERT((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
- S_ISLNK(inode->i_mode)) || inode->i_nlink == 0);
-
- BUFFER_TRACE(sbi->s_sbh, "get_write_access");
- err = ext4_journal_get_write_access(handle, sbi->s_sbh);
- if (err)
- goto out;
-
- err = ext4_reserve_inode_write(handle, inode, &iloc);
- if (err)
- goto out;
-
- mutex_lock(&sbi->s_orphan_lock);
- /*
- * Due to previous errors inode may be already a part of on-disk
- * orphan list. If so skip on-disk list modification.
- */
- if (!NEXT_ORPHAN(inode) || NEXT_ORPHAN(inode) >
- (le32_to_cpu(sbi->s_es->s_inodes_count))) {
- /* Insert this inode at the head of the on-disk orphan list */
- NEXT_ORPHAN(inode) = le32_to_cpu(sbi->s_es->s_last_orphan);
- lock_buffer(sbi->s_sbh);
- sbi->s_es->s_last_orphan = cpu_to_le32(inode->i_ino);
- ext4_superblock_csum_set(sb);
- unlock_buffer(sbi->s_sbh);
- dirty = true;
- }
- list_add(&EXT4_I(inode)->i_orphan, &sbi->s_orphan);
- mutex_unlock(&sbi->s_orphan_lock);
-
- if (dirty) {
- err = ext4_handle_dirty_metadata(handle, NULL, sbi->s_sbh);
- rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
- if (!err)
- err = rc;
- if (err) {
- /*
- * We have to remove inode from in-memory list if
- * addition to on disk orphan list failed. Stray orphan
- * list entries can cause panics at unmount time.
- */
- mutex_lock(&sbi->s_orphan_lock);
- list_del_init(&EXT4_I(inode)->i_orphan);
- mutex_unlock(&sbi->s_orphan_lock);
- }
- } else
- brelse(iloc.bh);
-
- jbd_debug(4, "superblock will point to %lu\n", inode->i_ino);
- jbd_debug(4, "orphan inode %lu will point to %d\n",
- inode->i_ino, NEXT_ORPHAN(inode));
-out:
- ext4_std_error(sb, err);
- return err;
-}
-
-/*
- * ext4_orphan_del() removes an unlinked or truncated inode from the list
- * of such inodes stored on disk, because it is finally being cleaned up.
- */
-int ext4_orphan_del(handle_t *handle, struct inode *inode)
-{
- struct list_head *prev;
- struct ext4_inode_info *ei = EXT4_I(inode);
- struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
- __u32 ino_next;
- struct ext4_iloc iloc;
- int err = 0;
-
- if (!sbi->s_journal && !(sbi->s_mount_state & EXT4_ORPHAN_FS))
- return 0;
-
- WARN_ON_ONCE(!(inode->i_state & (I_NEW | I_FREEING)) &&
- !inode_is_locked(inode));
- /* Do this quick check before taking global s_orphan_lock. */
- if (list_empty(&ei->i_orphan))
- return 0;
-
- if (handle) {
- /* Grab inode buffer early before taking global s_orphan_lock */
- err = ext4_reserve_inode_write(handle, inode, &iloc);
- }
-
- mutex_lock(&sbi->s_orphan_lock);
- jbd_debug(4, "remove inode %lu from orphan list\n", inode->i_ino);
-
- prev = ei->i_orphan.prev;
- list_del_init(&ei->i_orphan);
-
- /* If we're on an error path, we may not have a valid
- * transaction handle with which to update the orphan list on
- * disk, but we still need to remove the inode from the linked
- * list in memory. */
- if (!handle || err) {
- mutex_unlock(&sbi->s_orphan_lock);
- goto out_err;
- }
-
- ino_next = NEXT_ORPHAN(inode);
- if (prev == &sbi->s_orphan) {
- jbd_debug(4, "superblock will point to %u\n", ino_next);
- BUFFER_TRACE(sbi->s_sbh, "get_write_access");
- err = ext4_journal_get_write_access(handle, sbi->s_sbh);
- if (err) {
- mutex_unlock(&sbi->s_orphan_lock);
- goto out_brelse;
- }
- lock_buffer(sbi->s_sbh);
- sbi->s_es->s_last_orphan = cpu_to_le32(ino_next);
- ext4_superblock_csum_set(inode->i_sb);
- unlock_buffer(sbi->s_sbh);
- mutex_unlock(&sbi->s_orphan_lock);
- err = ext4_handle_dirty_metadata(handle, NULL, sbi->s_sbh);
- } else {
- struct ext4_iloc iloc2;
- struct inode *i_prev =
- &list_entry(prev, struct ext4_inode_info, i_orphan)->vfs_inode;
-
- jbd_debug(4, "orphan inode %lu will point to %u\n",
- i_prev->i_ino, ino_next);
- err = ext4_reserve_inode_write(handle, i_prev, &iloc2);
- if (err) {
- mutex_unlock(&sbi->s_orphan_lock);
- goto out_brelse;
- }
- NEXT_ORPHAN(i_prev) = ino_next;
- err = ext4_mark_iloc_dirty(handle, i_prev, &iloc2);
- mutex_unlock(&sbi->s_orphan_lock);
- }
- if (err)
- goto out_brelse;
- NEXT_ORPHAN(inode) = 0;
- err = ext4_mark_iloc_dirty(handle, inode, &iloc);
-out_err:
- ext4_std_error(inode->i_sb, err);
- return err;
-
-out_brelse:
- brelse(iloc.bh);
- goto out_err;
-}
-
static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
{
int retval;
if (le32_to_cpu(ent->parent_de->inode) != ent->dir->i_ino)
return -EFSCORRUPTED;
BUFFER_TRACE(ent->dir_bh, "get_write_access");
- return ext4_journal_get_write_access(handle, ent->dir_bh);
+ return ext4_journal_get_write_access(handle, ent->dir->i_sb,
+ ent->dir_bh, EXT4_JTR_NONE);
}
static int ext4_rename_dir_finish(handle_t *handle, struct ext4_renament *ent,
int retval, retval2;
BUFFER_TRACE(ent->bh, "get write access");
- retval = ext4_journal_get_write_access(handle, ent->bh);
+ retval = ext4_journal_get_write_access(handle, ent->dir->i_sb, ent->bh,
+ EXT4_JTR_NONE);
if (retval)
return retval;
ent->de->inode = cpu_to_le32(ino);
--- /dev/null
+/*
+ * Ext4 orphan inode handling
+ */
+#include <linux/fs.h>
+#include <linux/quotaops.h>
+#include <linux/buffer_head.h>
+
+#include "ext4.h"
+#include "ext4_jbd2.h"
+
+static int ext4_orphan_file_add(handle_t *handle, struct inode *inode)
+{
+ int i, j, start;
+ struct ext4_orphan_info *oi = &EXT4_SB(inode->i_sb)->s_orphan_info;
+ int ret = 0;
+ bool found = false;
+ __le32 *bdata;
+ int inodes_per_ob = ext4_inodes_per_orphan_block(inode->i_sb);
+ int looped = 0;
+
+ /*
+ * Find block with free orphan entry. Use CPU number for a naive hash
+ * for a search start in the orphan file
+ */
+ start = raw_smp_processor_id()*13 % oi->of_blocks;
+ i = start;
+ do {
+ if (atomic_dec_if_positive(&oi->of_binfo[i].ob_free_entries)
+ >= 0) {
+ found = true;
+ break;
+ }
+ if (++i >= oi->of_blocks)
+ i = 0;
+ } while (i != start);
+
+ if (!found) {
+ /*
+ * For now we don't grow or shrink orphan file. We just use
+ * whatever was allocated at mke2fs time. The additional
+ * credits we would have to reserve for each orphan inode
+ * operation just don't seem worth it.
+ */
+ return -ENOSPC;
+ }
+
+ ret = ext4_journal_get_write_access(handle, inode->i_sb,
+ oi->of_binfo[i].ob_bh, EXT4_JTR_ORPHAN_FILE);
+ if (ret) {
+ atomic_inc(&oi->of_binfo[i].ob_free_entries);
+ return ret;
+ }
+
+ bdata = (__le32 *)(oi->of_binfo[i].ob_bh->b_data);
+ /* Find empty slot in a block */
+ j = 0;
+ do {
+ if (looped) {
+ /*
+ * Did we walk through the block several times without
+ * finding free entry? It is theoretically possible
+ * if entries get constantly allocated and freed or
+ * if the block is corrupted. Avoid indefinite looping
+ * and bail. We'll use orphan list instead.
+ */
+ if (looped > 3) {
+ atomic_inc(&oi->of_binfo[i].ob_free_entries);
+ return -ENOSPC;
+ }
+ cond_resched();
+ }
+ while (bdata[j]) {
+ if (++j >= inodes_per_ob) {
+ j = 0;
+ looped++;
+ }
+ }
+ } while (cmpxchg(&bdata[j], (__le32)0, cpu_to_le32(inode->i_ino)) !=
+ (__le32)0);
+
+ EXT4_I(inode)->i_orphan_idx = i * inodes_per_ob + j;
+ ext4_set_inode_state(inode, EXT4_STATE_ORPHAN_FILE);
+
+ return ext4_handle_dirty_metadata(handle, NULL, oi->of_binfo[i].ob_bh);
+}
+
+/*
+ * ext4_orphan_add() links an unlinked or truncated inode into a list of
+ * such inodes, starting at the superblock, in case we crash before the
+ * file is closed/deleted, or in case the inode truncate spans multiple
+ * transactions and the last transaction is not recovered after a crash.
+ *
+ * At filesystem recovery time, we walk this list deleting unlinked
+ * inodes and truncating linked inodes in ext4_orphan_cleanup().
+ *
+ * Orphan list manipulation functions must be called under i_mutex unless
+ * we are just creating the inode or deleting it.
+ */
+int ext4_orphan_add(handle_t *handle, struct inode *inode)
+{
+ struct super_block *sb = inode->i_sb;
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ struct ext4_iloc iloc;
+ int err = 0, rc;
+ bool dirty = false;
+
+ if (!sbi->s_journal || is_bad_inode(inode))
+ return 0;
+
+ WARN_ON_ONCE(!(inode->i_state & (I_NEW | I_FREEING)) &&
+ !inode_is_locked(inode));
+ /*
+ * Inode orphaned in orphan file or in orphan list?
+ */
+ if (ext4_test_inode_state(inode, EXT4_STATE_ORPHAN_FILE) ||
+ !list_empty(&EXT4_I(inode)->i_orphan))
+ return 0;
+
+ /*
+ * Orphan handling is only valid for files with data blocks
+ * being truncated, or files being unlinked. Note that we either
+ * hold i_mutex, or the inode can not be referenced from outside,
+ * so i_nlink should not be bumped due to race
+ */
+ ASSERT((S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) ||
+ S_ISLNK(inode->i_mode)) || inode->i_nlink == 0);
+
+ if (sbi->s_orphan_info.of_blocks) {
+ err = ext4_orphan_file_add(handle, inode);
+ /*
+ * Fallback to normal orphan list of orphan file is
+ * out of space
+ */
+ if (err != -ENOSPC)
+ return err;
+ }
+
+ BUFFER_TRACE(sbi->s_sbh, "get_write_access");
+ err = ext4_journal_get_write_access(handle, sb, sbi->s_sbh,
+ EXT4_JTR_NONE);
+ if (err)
+ goto out;
+
+ err = ext4_reserve_inode_write(handle, inode, &iloc);
+ if (err)
+ goto out;
+
+ mutex_lock(&sbi->s_orphan_lock);
+ /*
+ * Due to previous errors inode may be already a part of on-disk
+ * orphan list. If so skip on-disk list modification.
+ */
+ if (!NEXT_ORPHAN(inode) || NEXT_ORPHAN(inode) >
+ (le32_to_cpu(sbi->s_es->s_inodes_count))) {
+ /* Insert this inode at the head of the on-disk orphan list */
+ NEXT_ORPHAN(inode) = le32_to_cpu(sbi->s_es->s_last_orphan);
+ lock_buffer(sbi->s_sbh);
+ sbi->s_es->s_last_orphan = cpu_to_le32(inode->i_ino);
+ ext4_superblock_csum_set(sb);
+ unlock_buffer(sbi->s_sbh);
+ dirty = true;
+ }
+ list_add(&EXT4_I(inode)->i_orphan, &sbi->s_orphan);
+ mutex_unlock(&sbi->s_orphan_lock);
+
+ if (dirty) {
+ err = ext4_handle_dirty_metadata(handle, NULL, sbi->s_sbh);
+ rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
+ if (!err)
+ err = rc;
+ if (err) {
+ /*
+ * We have to remove inode from in-memory list if
+ * addition to on disk orphan list failed. Stray orphan
+ * list entries can cause panics at unmount time.
+ */
+ mutex_lock(&sbi->s_orphan_lock);
+ list_del_init(&EXT4_I(inode)->i_orphan);
+ mutex_unlock(&sbi->s_orphan_lock);
+ }
+ } else
+ brelse(iloc.bh);
+
+ jbd_debug(4, "superblock will point to %lu\n", inode->i_ino);
+ jbd_debug(4, "orphan inode %lu will point to %d\n",
+ inode->i_ino, NEXT_ORPHAN(inode));
+out:
+ ext4_std_error(sb, err);
+ return err;
+}
+
+static int ext4_orphan_file_del(handle_t *handle, struct inode *inode)
+{
+ struct ext4_orphan_info *oi = &EXT4_SB(inode->i_sb)->s_orphan_info;
+ __le32 *bdata;
+ int blk, off;
+ int inodes_per_ob = ext4_inodes_per_orphan_block(inode->i_sb);
+ int ret = 0;
+
+ if (!handle)
+ goto out;
+ blk = EXT4_I(inode)->i_orphan_idx / inodes_per_ob;
+ off = EXT4_I(inode)->i_orphan_idx % inodes_per_ob;
+ if (WARN_ON_ONCE(blk >= oi->of_blocks))
+ goto out;
+
+ ret = ext4_journal_get_write_access(handle, inode->i_sb,
+ oi->of_binfo[blk].ob_bh, EXT4_JTR_ORPHAN_FILE);
+ if (ret)
+ goto out;
+
+ bdata = (__le32 *)(oi->of_binfo[blk].ob_bh->b_data);
+ bdata[off] = 0;
+ atomic_inc(&oi->of_binfo[blk].ob_free_entries);
+ ret = ext4_handle_dirty_metadata(handle, NULL, oi->of_binfo[blk].ob_bh);
+out:
+ ext4_clear_inode_state(inode, EXT4_STATE_ORPHAN_FILE);
+ INIT_LIST_HEAD(&EXT4_I(inode)->i_orphan);
+
+ return ret;
+}
+
+/*
+ * ext4_orphan_del() removes an unlinked or truncated inode from the list
+ * of such inodes stored on disk, because it is finally being cleaned up.
+ */
+int ext4_orphan_del(handle_t *handle, struct inode *inode)
+{
+ struct list_head *prev;
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+ __u32 ino_next;
+ struct ext4_iloc iloc;
+ int err = 0;
+
+ if (!sbi->s_journal && !(sbi->s_mount_state & EXT4_ORPHAN_FS))
+ return 0;
+
+ WARN_ON_ONCE(!(inode->i_state & (I_NEW | I_FREEING)) &&
+ !inode_is_locked(inode));
+ if (ext4_test_inode_state(inode, EXT4_STATE_ORPHAN_FILE))
+ return ext4_orphan_file_del(handle, inode);
+
+ /* Do this quick check before taking global s_orphan_lock. */
+ if (list_empty(&ei->i_orphan))
+ return 0;
+
+ if (handle) {
+ /* Grab inode buffer early before taking global s_orphan_lock */
+ err = ext4_reserve_inode_write(handle, inode, &iloc);
+ }
+
+ mutex_lock(&sbi->s_orphan_lock);
+ jbd_debug(4, "remove inode %lu from orphan list\n", inode->i_ino);
+
+ prev = ei->i_orphan.prev;
+ list_del_init(&ei->i_orphan);
+
+ /* If we're on an error path, we may not have a valid
+ * transaction handle with which to update the orphan list on
+ * disk, but we still need to remove the inode from the linked
+ * list in memory. */
+ if (!handle || err) {
+ mutex_unlock(&sbi->s_orphan_lock);
+ goto out_err;
+ }
+
+ ino_next = NEXT_ORPHAN(inode);
+ if (prev == &sbi->s_orphan) {
+ jbd_debug(4, "superblock will point to %u\n", ino_next);
+ BUFFER_TRACE(sbi->s_sbh, "get_write_access");
+ err = ext4_journal_get_write_access(handle, inode->i_sb,
+ sbi->s_sbh, EXT4_JTR_NONE);
+ if (err) {
+ mutex_unlock(&sbi->s_orphan_lock);
+ goto out_brelse;
+ }
+ lock_buffer(sbi->s_sbh);
+ sbi->s_es->s_last_orphan = cpu_to_le32(ino_next);
+ ext4_superblock_csum_set(inode->i_sb);
+ unlock_buffer(sbi->s_sbh);
+ mutex_unlock(&sbi->s_orphan_lock);
+ err = ext4_handle_dirty_metadata(handle, NULL, sbi->s_sbh);
+ } else {
+ struct ext4_iloc iloc2;
+ struct inode *i_prev =
+ &list_entry(prev, struct ext4_inode_info, i_orphan)->vfs_inode;
+
+ jbd_debug(4, "orphan inode %lu will point to %u\n",
+ i_prev->i_ino, ino_next);
+ err = ext4_reserve_inode_write(handle, i_prev, &iloc2);
+ if (err) {
+ mutex_unlock(&sbi->s_orphan_lock);
+ goto out_brelse;
+ }
+ NEXT_ORPHAN(i_prev) = ino_next;
+ err = ext4_mark_iloc_dirty(handle, i_prev, &iloc2);
+ mutex_unlock(&sbi->s_orphan_lock);
+ }
+ if (err)
+ goto out_brelse;
+ NEXT_ORPHAN(inode) = 0;
+ err = ext4_mark_iloc_dirty(handle, inode, &iloc);
+out_err:
+ ext4_std_error(inode->i_sb, err);
+ return err;
+
+out_brelse:
+ brelse(iloc.bh);
+ goto out_err;
+}
+
+#ifdef CONFIG_QUOTA
+static int ext4_quota_on_mount(struct super_block *sb, int type)
+{
+ return dquot_quota_on_mount(sb,
+ rcu_dereference_protected(EXT4_SB(sb)->s_qf_names[type],
+ lockdep_is_held(&sb->s_umount)),
+ EXT4_SB(sb)->s_jquota_fmt, type);
+}
+#endif
+
+static void ext4_process_orphan(struct inode *inode,
+ int *nr_truncates, int *nr_orphans)
+{
+ struct super_block *sb = inode->i_sb;
+ int ret;
+
+ dquot_initialize(inode);
+ if (inode->i_nlink) {
+ if (test_opt(sb, DEBUG))
+ ext4_msg(sb, KERN_DEBUG,
+ "%s: truncating inode %lu to %lld bytes",
+ __func__, inode->i_ino, inode->i_size);
+ jbd_debug(2, "truncating inode %lu to %lld bytes\n",
+ inode->i_ino, inode->i_size);
+ inode_lock(inode);
+ truncate_inode_pages(inode->i_mapping, inode->i_size);
+ ret = ext4_truncate(inode);
+ if (ret) {
+ /*
+ * We need to clean up the in-core orphan list
+ * manually if ext4_truncate() failed to get a
+ * transaction handle.
+ */
+ ext4_orphan_del(NULL, inode);
+ ext4_std_error(inode->i_sb, ret);
+ }
+ inode_unlock(inode);
+ (*nr_truncates)++;
+ } else {
+ if (test_opt(sb, DEBUG))
+ ext4_msg(sb, KERN_DEBUG,
+ "%s: deleting unreferenced inode %lu",
+ __func__, inode->i_ino);
+ jbd_debug(2, "deleting unreferenced inode %lu\n",
+ inode->i_ino);
+ (*nr_orphans)++;
+ }
+ iput(inode); /* The delete magic happens here! */
+}
+
+/* ext4_orphan_cleanup() walks a singly-linked list of inodes (starting at
+ * the superblock) which were deleted from all directories, but held open by
+ * a process at the time of a crash. We walk the list and try to delete these
+ * inodes at recovery time (only with a read-write filesystem).
+ *
+ * In order to keep the orphan inode chain consistent during traversal (in
+ * case of crash during recovery), we link each inode into the superblock
+ * orphan list_head and handle it the same way as an inode deletion during
+ * normal operation (which journals the operations for us).
+ *
+ * We only do an iget() and an iput() on each inode, which is very safe if we
+ * accidentally point at an in-use or already deleted inode. The worst that
+ * can happen in this case is that we get a "bit already cleared" message from
+ * ext4_free_inode(). The only reason we would point at a wrong inode is if
+ * e2fsck was run on this filesystem, and it must have already done the orphan
+ * inode cleanup for us, so we can safely abort without any further action.
+ */
+void ext4_orphan_cleanup(struct super_block *sb, struct ext4_super_block *es)
+{
+ unsigned int s_flags = sb->s_flags;
+ int nr_orphans = 0, nr_truncates = 0;
+ struct inode *inode;
+ int i, j;
+#ifdef CONFIG_QUOTA
+ int quota_update = 0;
+#endif
+ __le32 *bdata;
+ struct ext4_orphan_info *oi = &EXT4_SB(sb)->s_orphan_info;
+ int inodes_per_ob = ext4_inodes_per_orphan_block(sb);
+
+ if (!es->s_last_orphan && !oi->of_blocks) {
+ jbd_debug(4, "no orphan inodes to clean up\n");
+ return;
+ }
+
+ if (bdev_read_only(sb->s_bdev)) {
+ ext4_msg(sb, KERN_ERR, "write access "
+ "unavailable, skipping orphan cleanup");
+ return;
+ }
+
+ /* Check if feature set would not allow a r/w mount */
+ if (!ext4_feature_set_ok(sb, 0)) {
+ ext4_msg(sb, KERN_INFO, "Skipping orphan cleanup due to "
+ "unknown ROCOMPAT features");
+ return;
+ }
+
+ if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) {
+ /* don't clear list on RO mount w/ errors */
+ if (es->s_last_orphan && !(s_flags & SB_RDONLY)) {
+ ext4_msg(sb, KERN_INFO, "Errors on filesystem, "
+ "clearing orphan list.\n");
+ es->s_last_orphan = 0;
+ }
+ jbd_debug(1, "Skipping orphan recovery on fs with errors.\n");
+ return;
+ }
+
+ if (s_flags & SB_RDONLY) {
+ ext4_msg(sb, KERN_INFO, "orphan cleanup on readonly fs");
+ sb->s_flags &= ~SB_RDONLY;
+ }
+#ifdef CONFIG_QUOTA
+ /*
+ * Turn on quotas which were not enabled for read-only mounts if
+ * filesystem has quota feature, so that they are updated correctly.
+ */
+ if (ext4_has_feature_quota(sb) && (s_flags & SB_RDONLY)) {
+ int ret = ext4_enable_quotas(sb);
+
+ if (!ret)
+ quota_update = 1;
+ else
+ ext4_msg(sb, KERN_ERR,
+ "Cannot turn on quotas: error %d", ret);
+ }
+
+ /* Turn on journaled quotas used for old sytle */
+ for (i = 0; i < EXT4_MAXQUOTAS; i++) {
+ if (EXT4_SB(sb)->s_qf_names[i]) {
+ int ret = ext4_quota_on_mount(sb, i);
+
+ if (!ret)
+ quota_update = 1;
+ else
+ ext4_msg(sb, KERN_ERR,
+ "Cannot turn on journaled "
+ "quota: type %d: error %d", i, ret);
+ }
+ }
+#endif
+
+ while (es->s_last_orphan) {
+ /*
+ * We may have encountered an error during cleanup; if
+ * so, skip the rest.
+ */
+ if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) {
+ jbd_debug(1, "Skipping orphan recovery on fs with errors.\n");
+ es->s_last_orphan = 0;
+ break;
+ }
+
+ inode = ext4_orphan_get(sb, le32_to_cpu(es->s_last_orphan));
+ if (IS_ERR(inode)) {
+ es->s_last_orphan = 0;
+ break;
+ }
+
+ list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan);
+ ext4_process_orphan(inode, &nr_truncates, &nr_orphans);
+ }
+
+ for (i = 0; i < oi->of_blocks; i++) {
+ bdata = (__le32 *)(oi->of_binfo[i].ob_bh->b_data);
+ for (j = 0; j < inodes_per_ob; j++) {
+ if (!bdata[j])
+ continue;
+ inode = ext4_orphan_get(sb, le32_to_cpu(bdata[j]));
+ if (IS_ERR(inode))
+ continue;
+ ext4_set_inode_state(inode, EXT4_STATE_ORPHAN_FILE);
+ EXT4_I(inode)->i_orphan_idx = i * inodes_per_ob + j;
+ ext4_process_orphan(inode, &nr_truncates, &nr_orphans);
+ }
+ }
+
+#define PLURAL(x) (x), ((x) == 1) ? "" : "s"
+
+ if (nr_orphans)
+ ext4_msg(sb, KERN_INFO, "%d orphan inode%s deleted",
+ PLURAL(nr_orphans));
+ if (nr_truncates)
+ ext4_msg(sb, KERN_INFO, "%d truncate%s cleaned up",
+ PLURAL(nr_truncates));
+#ifdef CONFIG_QUOTA
+ /* Turn off quotas if they were enabled for orphan cleanup */
+ if (quota_update) {
+ for (i = 0; i < EXT4_MAXQUOTAS; i++) {
+ if (sb_dqopt(sb)->files[i])
+ dquot_quota_off(sb, i);
+ }
+ }
+#endif
+ sb->s_flags = s_flags; /* Restore SB_RDONLY status */
+}
+
+void ext4_release_orphan_info(struct super_block *sb)
+{
+ int i;
+ struct ext4_orphan_info *oi = &EXT4_SB(sb)->s_orphan_info;
+
+ if (!oi->of_blocks)
+ return;
+ for (i = 0; i < oi->of_blocks; i++)
+ brelse(oi->of_binfo[i].ob_bh);
+ kfree(oi->of_binfo);
+}
+
+static struct ext4_orphan_block_tail *ext4_orphan_block_tail(
+ struct super_block *sb,
+ struct buffer_head *bh)
+{
+ return (struct ext4_orphan_block_tail *)(bh->b_data + sb->s_blocksize -
+ sizeof(struct ext4_orphan_block_tail));
+}
+
+static int ext4_orphan_file_block_csum_verify(struct super_block *sb,
+ struct buffer_head *bh)
+{
+ __u32 calculated;
+ int inodes_per_ob = ext4_inodes_per_orphan_block(sb);
+ struct ext4_orphan_info *oi = &EXT4_SB(sb)->s_orphan_info;
+ struct ext4_orphan_block_tail *ot;
+ __le64 dsk_block_nr = cpu_to_le64(bh->b_blocknr);
+
+ if (!ext4_has_metadata_csum(sb))
+ return 1;
+
+ ot = ext4_orphan_block_tail(sb, bh);
+ calculated = ext4_chksum(EXT4_SB(sb), oi->of_csum_seed,
+ (__u8 *)&dsk_block_nr, sizeof(dsk_block_nr));
+ calculated = ext4_chksum(EXT4_SB(sb), calculated, (__u8 *)bh->b_data,
+ inodes_per_ob * sizeof(__u32));
+ return le32_to_cpu(ot->ob_checksum) == calculated;
+}
+
+/* This gets called only when checksumming is enabled */
+void ext4_orphan_file_block_trigger(struct jbd2_buffer_trigger_type *triggers,
+ struct buffer_head *bh,
+ void *data, size_t size)
+{
+ struct super_block *sb = EXT4_TRIGGER(triggers)->sb;
+ __u32 csum;
+ int inodes_per_ob = ext4_inodes_per_orphan_block(sb);
+ struct ext4_orphan_info *oi = &EXT4_SB(sb)->s_orphan_info;
+ struct ext4_orphan_block_tail *ot;
+ __le64 dsk_block_nr = cpu_to_le64(bh->b_blocknr);
+
+ csum = ext4_chksum(EXT4_SB(sb), oi->of_csum_seed,
+ (__u8 *)&dsk_block_nr, sizeof(dsk_block_nr));
+ csum = ext4_chksum(EXT4_SB(sb), csum, (__u8 *)data,
+ inodes_per_ob * sizeof(__u32));
+ ot = ext4_orphan_block_tail(sb, bh);
+ ot->ob_checksum = cpu_to_le32(csum);
+}
+
+int ext4_init_orphan_info(struct super_block *sb)
+{
+ struct ext4_orphan_info *oi = &EXT4_SB(sb)->s_orphan_info;
+ struct inode *inode;
+ int i, j;
+ int ret;
+ int free;
+ __le32 *bdata;
+ int inodes_per_ob = ext4_inodes_per_orphan_block(sb);
+ struct ext4_orphan_block_tail *ot;
+ ino_t orphan_ino = le32_to_cpu(EXT4_SB(sb)->s_es->s_orphan_file_inum);
+
+ if (!ext4_has_feature_orphan_file(sb))
+ return 0;
+
+ inode = ext4_iget(sb, orphan_ino, EXT4_IGET_SPECIAL);
+ if (IS_ERR(inode)) {
+ ext4_msg(sb, KERN_ERR, "get orphan inode failed");
+ return PTR_ERR(inode);
+ }
+ oi->of_blocks = inode->i_size >> sb->s_blocksize_bits;
+ oi->of_csum_seed = EXT4_I(inode)->i_csum_seed;
+ oi->of_binfo = kmalloc(oi->of_blocks*sizeof(struct ext4_orphan_block),
+ GFP_KERNEL);
+ if (!oi->of_binfo) {
+ ret = -ENOMEM;
+ goto out_put;
+ }
+ for (i = 0; i < oi->of_blocks; i++) {
+ oi->of_binfo[i].ob_bh = ext4_bread(NULL, inode, i, 0);
+ if (IS_ERR(oi->of_binfo[i].ob_bh)) {
+ ret = PTR_ERR(oi->of_binfo[i].ob_bh);
+ goto out_free;
+ }
+ if (!oi->of_binfo[i].ob_bh) {
+ ret = -EIO;
+ goto out_free;
+ }
+ ot = ext4_orphan_block_tail(sb, oi->of_binfo[i].ob_bh);
+ if (le32_to_cpu(ot->ob_magic) != EXT4_ORPHAN_BLOCK_MAGIC) {
+ ext4_error(sb, "orphan file block %d: bad magic", i);
+ ret = -EIO;
+ goto out_free;
+ }
+ if (!ext4_orphan_file_block_csum_verify(sb,
+ oi->of_binfo[i].ob_bh)) {
+ ext4_error(sb, "orphan file block %d: bad checksum", i);
+ ret = -EIO;
+ goto out_free;
+ }
+ bdata = (__le32 *)(oi->of_binfo[i].ob_bh->b_data);
+ free = 0;
+ for (j = 0; j < inodes_per_ob; j++)
+ if (bdata[j] == 0)
+ free++;
+ atomic_set(&oi->of_binfo[i].ob_free_entries, free);
+ }
+ iput(inode);
+ return 0;
+out_free:
+ for (i--; i >= 0; i--)
+ brelse(oi->of_binfo[i].ob_bh);
+ kfree(oi->of_binfo);
+out_put:
+ iput(inode);
+ return ret;
+}
+
+int ext4_orphan_file_empty(struct super_block *sb)
+{
+ struct ext4_orphan_info *oi = &EXT4_SB(sb)->s_orphan_info;
+ int i;
+ int inodes_per_ob = ext4_inodes_per_orphan_block(sb);
+
+ if (!ext4_has_feature_orphan_file(sb))
+ return 1;
+ for (i = 0; i < oi->of_blocks; i++)
+ if (atomic_read(&oi->of_binfo[i].ob_free_entries) !=
+ inodes_per_ob)
+ return 0;
+ return 1;
+}
if (unlikely(!bh))
return ERR_PTR(-ENOMEM);
BUFFER_TRACE(bh, "get_write_access");
- if ((err = ext4_journal_get_write_access(handle, bh))) {
+ err = ext4_journal_get_write_access(handle, sb, bh, EXT4_JTR_NONE);
+ if (err) {
brelse(bh);
bh = ERR_PTR(err);
} else {
return -ENOMEM;
BUFFER_TRACE(bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle, sb, bh,
+ EXT4_JTR_NONE);
if (err) {
brelse(bh);
return err;
}
BUFFER_TRACE(gdb, "get_write_access");
- err = ext4_journal_get_write_access(handle, gdb);
+ err = ext4_journal_get_write_access(handle, sb, gdb,
+ EXT4_JTR_NONE);
if (err) {
brelse(gdb);
goto out;
}
BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access");
- err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh);
+ err = ext4_journal_get_write_access(handle, sb, EXT4_SB(sb)->s_sbh,
+ EXT4_JTR_NONE);
if (unlikely(err))
goto errout;
BUFFER_TRACE(gdb_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, gdb_bh);
+ err = ext4_journal_get_write_access(handle, sb, gdb_bh, EXT4_JTR_NONE);
if (unlikely(err))
goto errout;
BUFFER_TRACE(dind, "get_write_access");
- err = ext4_journal_get_write_access(handle, dind);
+ err = ext4_journal_get_write_access(handle, sb, dind, EXT4_JTR_NONE);
if (unlikely(err)) {
ext4_std_error(sb, err);
goto errout;
n_group_desc[gdb_num] = gdb_bh;
BUFFER_TRACE(gdb_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, gdb_bh);
+ err = ext4_journal_get_write_access(handle, sb, gdb_bh, EXT4_JTR_NONE);
if (err) {
kvfree(n_group_desc);
brelse(gdb_bh);
for (i = 0; i < reserved_gdb; i++) {
BUFFER_TRACE(primary[i], "get_write_access");
- if ((err = ext4_journal_get_write_access(handle, primary[i])))
+ if ((err = ext4_journal_get_write_access(handle, sb, primary[i],
+ EXT4_JTR_NONE)))
goto exit_bh;
}
backup_block, backup_block -
ext4_group_first_block_no(sb, group));
BUFFER_TRACE(bh, "get_write_access");
- if ((err = ext4_journal_get_write_access(handle, bh))) {
- brelse(bh);
+ if ((err = ext4_journal_get_write_access(handle, sb, bh,
+ EXT4_JTR_NONE)))
break;
- }
lock_buffer(bh);
memcpy(bh->b_data, data, size);
if (rest)
gdb_bh = sbi_array_rcu_deref(sbi, s_group_desc,
gdb_num);
BUFFER_TRACE(gdb_bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, gdb_bh);
+ err = ext4_journal_get_write_access(handle, sb, gdb_bh,
+ EXT4_JTR_NONE);
if (!err && reserved_gdb && ext4_bg_num_gdb(sb, group))
err = reserve_backup_gdb(handle, resize_inode, group);
}
BUFFER_TRACE(sbi->s_sbh, "get_write_access");
- err = ext4_journal_get_write_access(handle, sbi->s_sbh);
+ err = ext4_journal_get_write_access(handle, sb, sbi->s_sbh,
+ EXT4_JTR_NONE);
if (err)
goto exit_journal;
}
BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access");
- err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh);
+ err = ext4_journal_get_write_access(handle, sb, EXT4_SB(sb)->s_sbh,
+ EXT4_JTR_NONE);
if (err) {
ext4_warning(sb, "error %d on journal write access", err);
goto errout;
return PTR_ERR(handle);
BUFFER_TRACE(sbi->s_sbh, "get_write_access");
- err = ext4_journal_get_write_access(handle, sbi->s_sbh);
+ err = ext4_journal_get_write_access(handle, sb, sbi->s_sbh,
+ EXT4_JTR_NONE);
if (err)
goto errout;
const char *dev_name, void *data);
static inline int ext2_feature_set_ok(struct super_block *sb);
static inline int ext3_feature_set_ok(struct super_block *sb);
-static int ext4_feature_set_ok(struct super_block *sb, int readonly);
static void ext4_destroy_lazyinit_thread(void);
static void ext4_unregister_li_request(struct super_block *sb);
static void ext4_clear_request_list(void);
flush_work(&sbi->s_error_work);
destroy_workqueue(sbi->rsv_conversion_wq);
+ ext4_release_orphan_info(sb);
/*
* Unregister sysfs before destroying jbd2 journal.
if (!sb_rdonly(sb) && !aborted) {
ext4_clear_feature_journal_needs_recovery(sb);
+ ext4_clear_feature_orphan_present(sb);
es->s_state = cpu_to_le16(sbi->s_mount_state);
}
if (!sb_rdonly(sb))
static int ext4_write_info(struct super_block *sb, int type);
static int ext4_quota_on(struct super_block *sb, int type, int format_id,
const struct path *path);
-static int ext4_quota_on_mount(struct super_block *sb, int type);
static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off);
static ssize_t ext4_quota_write(struct super_block *sb, int type,
const char *data, size_t len, loff_t off);
static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
unsigned int flags);
-static int ext4_enable_quotas(struct super_block *sb);
static struct dquot **ext4_get_dquots(struct inode *inode)
{
es->s_max_mnt_count = cpu_to_le16(EXT4_DFL_MAX_MNT_COUNT);
le16_add_cpu(&es->s_mnt_count, 1);
ext4_update_tstamp(es, s_mtime);
- if (sbi->s_journal)
+ if (sbi->s_journal) {
ext4_set_feature_journal_needs_recovery(sb);
+ if (ext4_has_feature_orphan_file(sb))
+ ext4_set_feature_orphan_present(sb);
+ }
err = ext4_commit_super(sb);
done:
return 1;
}
-/* ext4_orphan_cleanup() walks a singly-linked list of inodes (starting at
- * the superblock) which were deleted from all directories, but held open by
- * a process at the time of a crash. We walk the list and try to delete these
- * inodes at recovery time (only with a read-write filesystem).
- *
- * In order to keep the orphan inode chain consistent during traversal (in
- * case of crash during recovery), we link each inode into the superblock
- * orphan list_head and handle it the same way as an inode deletion during
- * normal operation (which journals the operations for us).
- *
- * We only do an iget() and an iput() on each inode, which is very safe if we
- * accidentally point at an in-use or already deleted inode. The worst that
- * can happen in this case is that we get a "bit already cleared" message from
- * ext4_free_inode(). The only reason we would point at a wrong inode is if
- * e2fsck was run on this filesystem, and it must have already done the orphan
- * inode cleanup for us, so we can safely abort without any further action.
- */
-static void ext4_orphan_cleanup(struct super_block *sb,
- struct ext4_super_block *es)
-{
- unsigned int s_flags = sb->s_flags;
- int ret, nr_orphans = 0, nr_truncates = 0;
-#ifdef CONFIG_QUOTA
- int quota_update = 0;
- int i;
-#endif
- if (!es->s_last_orphan) {
- jbd_debug(4, "no orphan inodes to clean up\n");
- return;
- }
-
- if (bdev_read_only(sb->s_bdev)) {
- ext4_msg(sb, KERN_ERR, "write access "
- "unavailable, skipping orphan cleanup");
- return;
- }
-
- /* Check if feature set would not allow a r/w mount */
- if (!ext4_feature_set_ok(sb, 0)) {
- ext4_msg(sb, KERN_INFO, "Skipping orphan cleanup due to "
- "unknown ROCOMPAT features");
- return;
- }
-
- if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) {
- /* don't clear list on RO mount w/ errors */
- if (es->s_last_orphan && !(s_flags & SB_RDONLY)) {
- ext4_msg(sb, KERN_INFO, "Errors on filesystem, "
- "clearing orphan list.\n");
- es->s_last_orphan = 0;
- }
- jbd_debug(1, "Skipping orphan recovery on fs with errors.\n");
- return;
- }
-
- if (s_flags & SB_RDONLY) {
- ext4_msg(sb, KERN_INFO, "orphan cleanup on readonly fs");
- sb->s_flags &= ~SB_RDONLY;
- }
-#ifdef CONFIG_QUOTA
- /*
- * Turn on quotas which were not enabled for read-only mounts if
- * filesystem has quota feature, so that they are updated correctly.
- */
- if (ext4_has_feature_quota(sb) && (s_flags & SB_RDONLY)) {
- int ret = ext4_enable_quotas(sb);
-
- if (!ret)
- quota_update = 1;
- else
- ext4_msg(sb, KERN_ERR,
- "Cannot turn on quotas: error %d", ret);
- }
-
- /* Turn on journaled quotas used for old sytle */
- for (i = 0; i < EXT4_MAXQUOTAS; i++) {
- if (EXT4_SB(sb)->s_qf_names[i]) {
- int ret = ext4_quota_on_mount(sb, i);
-
- if (!ret)
- quota_update = 1;
- else
- ext4_msg(sb, KERN_ERR,
- "Cannot turn on journaled "
- "quota: type %d: error %d", i, ret);
- }
- }
-#endif
-
- while (es->s_last_orphan) {
- struct inode *inode;
-
- /*
- * We may have encountered an error during cleanup; if
- * so, skip the rest.
- */
- if (EXT4_SB(sb)->s_mount_state & EXT4_ERROR_FS) {
- jbd_debug(1, "Skipping orphan recovery on fs with errors.\n");
- es->s_last_orphan = 0;
- break;
- }
-
- inode = ext4_orphan_get(sb, le32_to_cpu(es->s_last_orphan));
- if (IS_ERR(inode)) {
- es->s_last_orphan = 0;
- break;
- }
-
- list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan);
- dquot_initialize(inode);
- if (inode->i_nlink) {
- if (test_opt(sb, DEBUG))
- ext4_msg(sb, KERN_DEBUG,
- "%s: truncating inode %lu to %lld bytes",
- __func__, inode->i_ino, inode->i_size);
- jbd_debug(2, "truncating inode %lu to %lld bytes\n",
- inode->i_ino, inode->i_size);
- inode_lock(inode);
- truncate_inode_pages(inode->i_mapping, inode->i_size);
- ret = ext4_truncate(inode);
- if (ret) {
- /*
- * We need to clean up the in-core orphan list
- * manually if ext4_truncate() failed to get a
- * transaction handle.
- */
- ext4_orphan_del(NULL, inode);
- ext4_std_error(inode->i_sb, ret);
- }
- inode_unlock(inode);
- nr_truncates++;
- } else {
- if (test_opt(sb, DEBUG))
- ext4_msg(sb, KERN_DEBUG,
- "%s: deleting unreferenced inode %lu",
- __func__, inode->i_ino);
- jbd_debug(2, "deleting unreferenced inode %lu\n",
- inode->i_ino);
- nr_orphans++;
- }
- iput(inode); /* The delete magic happens here! */
- }
-
-#define PLURAL(x) (x), ((x) == 1) ? "" : "s"
-
- if (nr_orphans)
- ext4_msg(sb, KERN_INFO, "%d orphan inode%s deleted",
- PLURAL(nr_orphans));
- if (nr_truncates)
- ext4_msg(sb, KERN_INFO, "%d truncate%s cleaned up",
- PLURAL(nr_truncates));
-#ifdef CONFIG_QUOTA
- /* Turn off quotas if they were enabled for orphan cleanup */
- if (quota_update) {
- for (i = 0; i < EXT4_MAXQUOTAS; i++) {
- if (sb_dqopt(sb)->files[i])
- dquot_quota_off(sb, i);
- }
- }
-#endif
- sb->s_flags = s_flags; /* Restore SB_RDONLY status */
-}
-
/*
* Maximal extent format file size.
* Resulting logical blkno at s_maxbytes must fit in our on-disk
* Returns 1 if this filesystem can be mounted as requested,
* 0 if it cannot be.
*/
-static int ext4_feature_set_ok(struct super_block *sb, int readonly)
+int ext4_feature_set_ok(struct super_block *sb, int readonly)
{
if (ext4_has_unknown_ext4_incompat_features(sb)) {
ext4_msg(sb, KERN_ERR,
#endif
}
+static void ext4_setup_csum_trigger(struct super_block *sb,
+ enum ext4_journal_trigger_type type,
+ void (*trigger)(
+ struct jbd2_buffer_trigger_type *type,
+ struct buffer_head *bh,
+ void *mapped_data,
+ size_t size))
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+
+ sbi->s_journal_triggers[type].sb = sb;
+ sbi->s_journal_triggers[type].tr_triggers.t_frozen = trigger;
+}
+
static int ext4_fill_super(struct super_block *sb, void *data, int silent)
{
struct dax_device *dax_dev = fs_dax_get_by_bdev(sb->s_bdev);
silent = 1;
goto cantfind_ext4;
}
+ ext4_setup_csum_trigger(sb, EXT4_JTR_ORPHAN_FILE,
+ ext4_orphan_file_block_trigger);
/* Load the checksum driver */
sbi->s_chksum_driver = crypto_alloc_shash("crc32c", 0, 0);
sb->s_root = NULL;
needs_recovery = (es->s_last_orphan != 0 ||
+ ext4_has_feature_orphan_present(sb) ||
ext4_has_feature_journal_needs_recovery(sb));
if (ext4_has_feature_mmp(sb) && !sb_rdonly(sb))
err = percpu_counter_init(&sbi->s_freeinodes_counter, freei,
GFP_KERNEL);
}
+ /*
+ * Update the checksum after updating free space/inode
+ * counters. Otherwise the superblock can have an incorrect
+ * checksum in the buffer cache until it is written out and
+ * e2fsprogs programs trying to open a file system immediately
+ * after it is mounted can fail.
+ */
+ ext4_superblock_csum_set(sb);
if (!err)
err = percpu_counter_init(&sbi->s_dirs_counter,
ext4_count_dirs(sb), GFP_KERNEL);
if (err)
goto failed_mount7;
+ err = ext4_init_orphan_info(sb);
+ if (err)
+ goto failed_mount8;
#ifdef CONFIG_QUOTA
/* Enable quota usage during mount. */
if (ext4_has_feature_quota(sb) && !sb_rdonly(sb)) {
err = ext4_enable_quotas(sb);
if (err)
- goto failed_mount8;
+ goto failed_mount9;
}
#endif /* CONFIG_QUOTA */
ext4_msg(sb, KERN_INFO, "recovery complete");
err = ext4_mark_recovery_complete(sb, es);
if (err)
- goto failed_mount8;
+ goto failed_mount9;
}
if (EXT4_SB(sb)->s_journal) {
if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
ext4_msg(sb, KERN_ERR, "VFS: Can't find ext4 filesystem");
goto failed_mount;
+failed_mount9:
+ ext4_release_orphan_info(sb);
failed_mount8:
ext4_unregister_sysfs(sb);
kobject_put(&sbi->s_kobj);
if (err < 0)
goto out;
- if (ext4_has_feature_journal_needs_recovery(sb) && sb_rdonly(sb)) {
+ if (sb_rdonly(sb) && (ext4_has_feature_journal_needs_recovery(sb) ||
+ ext4_has_feature_orphan_present(sb))) {
+ if (!ext4_orphan_file_empty(sb)) {
+ ext4_error(sb, "Orphan file not empty on read-only fs.");
+ err = -EFSCORRUPTED;
+ goto out;
+ }
ext4_clear_feature_journal_needs_recovery(sb);
+ ext4_clear_feature_orphan_present(sb);
ext4_commit_super(sb);
}
out:
/* Journal blocked and flushed, clear needs_recovery flag. */
ext4_clear_feature_journal_needs_recovery(sb);
+ if (ext4_orphan_file_empty(sb))
+ ext4_clear_feature_orphan_present(sb);
}
error = ext4_commit_super(sb);
if (EXT4_SB(sb)->s_journal) {
/* Reset the needs_recovery flag before the fs is unlocked. */
ext4_set_feature_journal_needs_recovery(sb);
+ if (ext4_has_feature_orphan_file(sb))
+ ext4_set_feature_orphan_present(sb);
}
ext4_commit_super(sb);
* around from a previously readonly bdev mount,
* require a full umount/remount for now.
*/
- if (es->s_last_orphan) {
+ if (es->s_last_orphan || !ext4_orphan_file_empty(sb)) {
ext4_msg(sb, KERN_WARNING, "Couldn't "
"remount RDWR because of unprocessed "
"orphan inode list. Please "
return ret;
}
-/*
- * Turn on quotas during mount time - we need to find
- * the quota file and such...
- */
-static int ext4_quota_on_mount(struct super_block *sb, int type)
-{
- return dquot_quota_on_mount(sb, get_qf_name(sb, EXT4_SB(sb), type),
- EXT4_SB(sb)->s_jquota_fmt, type);
-}
-
static void lockdep_set_quota_inode(struct inode *inode, int subclass)
{
struct ext4_inode_info *ei = EXT4_I(inode);
}
/* Enable usage tracking for all quota types. */
-static int ext4_enable_quotas(struct super_block *sb)
+int ext4_enable_quotas(struct super_block *sb)
{
int type, err = 0;
unsigned long qf_inums[EXT4_MAXQUOTAS] = {
if (!bh)
goto out;
BUFFER_TRACE(bh, "get write access");
- err = ext4_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle, sb, bh, EXT4_JTR_NONE);
if (err) {
brelse(bh);
return err;
return;
BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access");
- if (ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh) == 0) {
+ if (ext4_journal_get_write_access(handle, sb, EXT4_SB(sb)->s_sbh,
+ EXT4_JTR_NONE) == 0) {
lock_buffer(EXT4_SB(sb)->s_sbh);
ext4_set_feature_xattr(sb);
ext4_superblock_csum_set(sb);
continue;
}
if (err > 0) {
- err = ext4_journal_get_write_access(handle, bh);
+ err = ext4_journal_get_write_access(handle,
+ parent->i_sb, bh, EXT4_JTR_NONE);
if (err) {
ext4_warning_inode(ea_inode,
"Re-get write access err=%d",
int error = 0;
BUFFER_TRACE(bh, "get_write_access");
- error = ext4_journal_get_write_access(handle, bh);
+ error = ext4_journal_get_write_access(handle, inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (error)
goto out;
"ext4_getblk() return bh = NULL");
return -EFSCORRUPTED;
}
- ret = ext4_journal_get_write_access(handle, bh);
+ ret = ext4_journal_get_write_access(handle, ea_inode->i_sb, bh,
+ EXT4_JTR_NONE);
if (ret)
goto out;
if (s->base) {
BUFFER_TRACE(bs->bh, "get_write_access");
- error = ext4_journal_get_write_access(handle, bs->bh);
+ error = ext4_journal_get_write_access(handle, sb, bs->bh,
+ EXT4_JTR_NONE);
if (error)
goto cleanup;
lock_buffer(bs->bh);
if (error)
goto cleanup;
BUFFER_TRACE(new_bh, "get_write_access");
- error = ext4_journal_get_write_access(handle,
- new_bh);
+ error = ext4_journal_get_write_access(
+ handle, sb, new_bh,
+ EXT4_JTR_NONE);
if (error)
goto cleanup_dquot;
lock_buffer(new_bh);
}
lock_buffer(new_bh);
- error = ext4_journal_get_create_access(handle, new_bh);
+ error = ext4_journal_get_create_access(handle, sb,
+ new_bh, EXT4_JTR_NONE);
if (error) {
unlock_buffer(new_bh);
error = -EIO;
goto cleanup;
}
- error = ext4_journal_get_write_access(handle, iloc.bh);
+ error = ext4_journal_get_write_access(handle, inode->i_sb,
+ iloc.bh, EXT4_JTR_NONE);
if (error) {
EXT4_ERROR_INODE(inode, "write access (error %d)",
error);
if (!jbd2_journal_has_csum_v2or3(j))
return 1;
- tail = (struct jbd2_journal_block_tail *)(buf + j->j_blocksize -
- sizeof(struct jbd2_journal_block_tail));
+ tail = (struct jbd2_journal_block_tail *)((char *)buf +
+ j->j_blocksize - sizeof(struct jbd2_journal_block_tail));
provided = tail->t_checksum;
tail->t_checksum = 0;
calculated = jbd2_chksum(j, j->j_csum_seed, buf, j->j_blocksize);
static int count_tags(journal_t *journal, struct buffer_head *bh)
{
char * tagp;
- journal_block_tag_t * tag;
+ journal_block_tag_t tag;
int nr = 0, size = journal->j_blocksize;
int tag_bytes = journal_tag_bytes(journal);
tagp = &bh->b_data[sizeof(journal_header_t)];
while ((tagp - bh->b_data + tag_bytes) <= size) {
- tag = (journal_block_tag_t *) tagp;
+ memcpy(&tag, tagp, sizeof(tag));
nr++;
tagp += tag_bytes;
- if (!(tag->t_flags & cpu_to_be16(JBD2_FLAG_SAME_UUID)))
+ if (!(tag.t_flags & cpu_to_be16(JBD2_FLAG_SAME_UUID)))
tagp += 16;
- if (tag->t_flags & cpu_to_be16(JBD2_FLAG_LAST_TAG))
+ if (tag.t_flags & cpu_to_be16(JBD2_FLAG_LAST_TAG))
break;
}
}
static int jbd2_block_tag_csum_verify(journal_t *j, journal_block_tag_t *tag,
+ journal_block_tag3_t *tag3,
void *buf, __u32 sequence)
{
- journal_block_tag3_t *tag3 = (journal_block_tag3_t *)tag;
__u32 csum32;
__be32 seq;
while (1) {
int flags;
char * tagp;
- journal_block_tag_t * tag;
+ journal_block_tag_t tag;
struct buffer_head * obh;
struct buffer_head * nbh;
<= journal->j_blocksize - descr_csum_size) {
unsigned long io_block;
- tag = (journal_block_tag_t *) tagp;
- flags = be16_to_cpu(tag->t_flags);
+ memcpy(&tag, tagp, sizeof(tag));
+ flags = be16_to_cpu(tag.t_flags);
io_block = next_log_block++;
wrap(journal, next_log_block);
J_ASSERT(obh != NULL);
blocknr = read_tag_block(journal,
- tag);
+ &tag);
/* If the block has been
* revoked, then we're all done
/* Look for block corruption */
if (!jbd2_block_tag_csum_verify(
- journal, tag, obh->b_data,
- be32_to_cpu(tmp->h_sequence))) {
+ journal, &tag, (journal_block_tag3_t *)tagp,
+ obh->b_data, be32_to_cpu(tmp->h_sequence))) {
brelse(obh);
success = -EFSBADCRC;
printk(KERN_ERR "JBD2: Invalid "
*/
jbd_debug(1, "JBD2: Invalid checksum ignored in transaction %u, likely stale data\n",
next_commit_ID);
- err = 0;
brelse(bh);
goto done;
}
{
jbd2_journal_revoke_header_t *header;
int offset, max;
- int csum_size = 0;
+ unsigned csum_size = 0;
__u32 rcount;
int record_len = 4;
* with j_state_lock held for reading. Returns 0 if handle joined the running
* transaction. Returns 1 if we had to wait, j_state_lock is dropped, and
* caller must retry.
+ *
+ * Note: because j_state_lock may be dropped depending on the return
+ * value, we need to fake out sparse so ti doesn't complain about a
+ * locking imbalance. Callers of add_transaction_credits will need to
+ * make a similar accomodation.
*/
static int add_transaction_credits(journal_t *journal, int blocks,
int rsv_blocks)
+__must_hold(&journal->j_state_lock)
{
transaction_t *t = journal->j_running_transaction;
int needed;
if (t->t_state != T_RUNNING) {
WARN_ON_ONCE(t->t_state >= T_FLUSH);
wait_transaction_locked(journal);
+ __acquire(&journal->j_state_lock); /* fake out sparse */
return 1;
}
wait_event(journal->j_wait_reserved,
atomic_read(&journal->j_reserved_credits) + total <=
journal->j_max_transaction_buffers);
+ __acquire(&journal->j_state_lock); /* fake out sparse */
return 1;
}
wait_transaction_locked(journal);
+ __acquire(&journal->j_state_lock); /* fake out sparse */
return 1;
}
journal->j_max_transaction_buffers)
__jbd2_log_wait_for_space(journal);
write_unlock(&journal->j_state_lock);
+ __acquire(&journal->j_state_lock); /* fake out sparse */
return 1;
}
wait_event(journal->j_wait_reserved,
atomic_read(&journal->j_reserved_credits) + rsv_blocks
<= journal->j_max_transaction_buffers / 2);
+ __acquire(&journal->j_state_lock); /* fake out sparse */
return 1;
}
return 0;
if (!handle->h_reserved) {
/* We may have dropped j_state_lock - restart in that case */
- if (add_transaction_credits(journal, blocks, rsv_blocks))
+ if (add_transaction_credits(journal, blocks, rsv_blocks)) {
+ /*
+ * add_transaction_credits releases
+ * j_state_lock on a non-zero return
+ */
+ __release(&journal->j_state_lock);
goto repeat;
+ }
} else {
/*
* We have handle reserved so we are allowed to join T_LOCKED
{
struct journal_head *jh = jbd2_journal_grab_journal_head(bh);
- if (WARN_ON(!jh))
+ if (WARN_ON_ONCE(!jh))
return;
jh->b_triggers = type;
jbd2_journal_put_journal_head(jh);
projects / linux-2.6-microblaze.git / commitdiff