unsigned long journal_devnum);
static int ext4_show_options(struct seq_file *seq, struct dentry *root);
static int ext4_commit_super(struct super_block *sb, int sync);
-static void ext4_mark_recovery_complete(struct super_block *sb,
+static int ext4_mark_recovery_complete(struct super_block *sb,
struct ext4_super_block *es);
-static void ext4_clear_journal_err(struct super_block *sb,
- struct ext4_super_block *es);
+static int ext4_clear_journal_err(struct super_block *sb,
+ struct ext4_super_block *es);
static int ext4_sync_fs(struct super_block *sb, int wait);
static int ext4_remount(struct super_block *sb, int *flags, char *data);
static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf);
struct va_format vaf;
va_list args;
+ atomic_inc(&EXT4_SB(sb)->s_msg_count);
if (!___ratelimit(&(EXT4_SB(sb)->s_msg_ratelimit_state), "EXT4-fs"))
return;
va_end(args);
}
-#define ext4_warning_ratelimit(sb) \
- ___ratelimit(&(EXT4_SB(sb)->s_warning_ratelimit_state), \
- "EXT4-fs warning")
+static int ext4_warning_ratelimit(struct super_block *sb)
+{
+ atomic_inc(&EXT4_SB(sb)->s_warning_count);
+ return ___ratelimit(&(EXT4_SB(sb)->s_warning_ratelimit_state),
+ "EXT4-fs warning");
+}
void __ext4_warning(struct super_block *sb, const char *function,
unsigned int line, const char *fmt, ...)
inode_set_iversion(&ei->vfs_inode, 1);
spin_lock_init(&ei->i_raw_lock);
INIT_LIST_HEAD(&ei->i_prealloc_list);
+ atomic_set(&ei->i_prealloc_active, 0);
spin_lock_init(&ei->i_prealloc_lock);
ext4_es_init_tree(&ei->i_es_tree);
rwlock_init(&ei->i_es_lock);
{
invalidate_inode_buffers(inode);
clear_inode(inode);
- ext4_discard_preallocations(inode);
+ ext4_discard_preallocations(inode, 0);
ext4_es_remove_extent(inode, 0, EXT_MAX_BLOCKS);
dquot_drop(inode);
if (EXT4_I(inode)->jinode) {
if (!page_has_buffers(page))
return 0;
if (journal)
- return jbd2_journal_try_to_free_buffers(journal, page,
- wait & ~__GFP_DIRECT_RECLAIM);
+ return jbd2_journal_try_to_free_buffers(journal, page);
+
return try_to_free_buffers(page);
}
Opt_dioread_nolock, Opt_dioread_lock,
Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
Opt_max_dir_size_kb, Opt_nojournal_checksum, Opt_nombcache,
+ Opt_prefetch_block_bitmaps,
};
static const match_table_t tokens = {
{Opt_inlinecrypt, "inlinecrypt"},
{Opt_nombcache, "nombcache"},
{Opt_nombcache, "no_mbcache"}, /* for backward compatibility */
+ {Opt_prefetch_block_bitmaps, "prefetch_block_bitmaps"},
{Opt_removed, "check=none"}, /* mount option from ext2/3 */
{Opt_removed, "nocheck"}, /* mount option from ext2/3 */
{Opt_removed, "reservation"}, /* mount option from ext2/3 */
{Opt_max_dir_size_kb, 0, MOPT_GTE0},
{Opt_test_dummy_encryption, 0, MOPT_STRING},
{Opt_nombcache, EXT4_MOUNT_NO_MBCACHE, MOPT_SET},
+ {Opt_prefetch_block_bitmaps, EXT4_MOUNT_PREFETCH_BLOCK_BITMAPS,
+ MOPT_SET},
{Opt_err, 0, 0}
};
static int ext4_run_li_request(struct ext4_li_request *elr)
{
struct ext4_group_desc *gdp = NULL;
- ext4_group_t group, ngroups;
- struct super_block *sb;
+ struct super_block *sb = elr->lr_super;
+ ext4_group_t ngroups = EXT4_SB(sb)->s_groups_count;
+ ext4_group_t group = elr->lr_next_group;
unsigned long timeout = 0;
+ unsigned int prefetch_ios = 0;
int ret = 0;
- sb = elr->lr_super;
- ngroups = EXT4_SB(sb)->s_groups_count;
+ if (elr->lr_mode == EXT4_LI_MODE_PREFETCH_BBITMAP) {
+ elr->lr_next_group = ext4_mb_prefetch(sb, group,
+ EXT4_SB(sb)->s_mb_prefetch, &prefetch_ios);
+ if (prefetch_ios)
+ ext4_mb_prefetch_fini(sb, elr->lr_next_group,
+ prefetch_ios);
+ trace_ext4_prefetch_bitmaps(sb, group, elr->lr_next_group,
+ prefetch_ios);
+ if (group >= elr->lr_next_group) {
+ ret = 1;
+ if (elr->lr_first_not_zeroed != ngroups &&
+ !sb_rdonly(sb) && test_opt(sb, INIT_INODE_TABLE)) {
+ elr->lr_next_group = elr->lr_first_not_zeroed;
+ elr->lr_mode = EXT4_LI_MODE_ITABLE;
+ ret = 0;
+ }
+ }
+ return ret;
+ }
- for (group = elr->lr_next_group; group < ngroups; group++) {
+ for (; group < ngroups; group++) {
gdp = ext4_get_group_desc(sb, group, NULL);
if (!gdp) {
ret = 1;
timeout = jiffies;
ret = ext4_init_inode_table(sb, group,
elr->lr_timeout ? 0 : 1);
+ trace_ext4_lazy_itable_init(sb, group);
if (elr->lr_timeout == 0) {
timeout = (jiffies - timeout) *
- elr->lr_sbi->s_li_wait_mult;
+ EXT4_SB(elr->lr_super)->s_li_wait_mult;
elr->lr_timeout = timeout;
}
elr->lr_next_sched = jiffies + elr->lr_timeout;
*/
static void ext4_remove_li_request(struct ext4_li_request *elr)
{
- struct ext4_sb_info *sbi;
-
if (!elr)
return;
- sbi = elr->lr_sbi;
-
list_del(&elr->lr_request);
- sbi->s_li_request = NULL;
+ EXT4_SB(elr->lr_super)->s_li_request = NULL;
kfree(elr);
}
static struct ext4_li_request *ext4_li_request_new(struct super_block *sb,
ext4_group_t start)
{
- struct ext4_sb_info *sbi = EXT4_SB(sb);
struct ext4_li_request *elr;
elr = kzalloc(sizeof(*elr), GFP_KERNEL);
return NULL;
elr->lr_super = sb;
- elr->lr_sbi = sbi;
- elr->lr_next_group = start;
+ elr->lr_first_not_zeroed = start;
+ if (test_opt(sb, PREFETCH_BLOCK_BITMAPS))
+ elr->lr_mode = EXT4_LI_MODE_PREFETCH_BBITMAP;
+ else {
+ elr->lr_mode = EXT4_LI_MODE_ITABLE;
+ elr->lr_next_group = start;
+ }
/*
* Randomize first schedule time of the request to
goto out;
}
- if (first_not_zeroed == ngroups || sb_rdonly(sb) ||
- !test_opt(sb, INIT_INODE_TABLE))
+ if (!test_opt(sb, PREFETCH_BLOCK_BITMAPS) &&
+ (first_not_zeroed == ngroups || sb_rdonly(sb) ||
+ !test_opt(sb, INIT_INODE_TABLE)))
goto out;
elr = ext4_li_request_new(sb, first_not_zeroed);
ext4_set_resv_clusters(sb);
- err = ext4_setup_system_zone(sb);
- if (err) {
- ext4_msg(sb, KERN_ERR, "failed to initialize system "
- "zone (%d)", err);
- goto failed_mount4a;
+ if (test_opt(sb, BLOCK_VALIDITY)) {
+ err = ext4_setup_system_zone(sb);
+ if (err) {
+ ext4_msg(sb, KERN_ERR, "failed to initialize system "
+ "zone (%d)", err);
+ goto failed_mount4a;
+ }
}
ext4_ext_init(sb);
}
#endif /* CONFIG_QUOTA */
+ /*
+ * Save the original bdev mapping's wb_err value which could be
+ * used to detect the metadata async write error.
+ */
+ spin_lock_init(&sbi->s_bdev_wb_lock);
+ if (!sb_rdonly(sb))
+ errseq_check_and_advance(&sb->s_bdev->bd_inode->i_mapping->wb_err,
+ &sbi->s_bdev_wb_err);
+ sb->s_bdev->bd_super = sb;
EXT4_SB(sb)->s_mount_state |= EXT4_ORPHAN_FS;
ext4_orphan_cleanup(sb, es);
EXT4_SB(sb)->s_mount_state &= ~EXT4_ORPHAN_FS;
if (needs_recovery) {
ext4_msg(sb, KERN_INFO, "recovery complete");
- ext4_mark_recovery_complete(sb, es);
+ err = ext4_mark_recovery_complete(sb, es);
+ if (err)
+ goto failed_mount8;
}
if (EXT4_SB(sb)->s_journal) {
if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
ratelimit_state_init(&sbi->s_err_ratelimit_state, 5 * HZ, 10);
ratelimit_state_init(&sbi->s_warning_ratelimit_state, 5 * HZ, 10);
ratelimit_state_init(&sbi->s_msg_ratelimit_state, 5 * HZ, 10);
+ atomic_set(&sbi->s_warning_count, 0);
+ atomic_set(&sbi->s_msg_count, 0);
kfree(orig_data);
return 0;
ext4_msg(sb, KERN_ERR, "VFS: Can't find ext4 filesystem");
goto failed_mount;
-#ifdef CONFIG_QUOTA
failed_mount8:
ext4_unregister_sysfs(sb);
-#endif
failed_mount7:
ext4_unregister_li_request(sb);
failed_mount6:
struct inode *journal_inode;
journal_t *journal;
- BUG_ON(!ext4_has_feature_journal(sb));
+ if (WARN_ON_ONCE(!ext4_has_feature_journal(sb)))
+ return NULL;
journal_inode = ext4_get_journal_inode(sb, journal_inum);
if (!journal_inode)
struct ext4_super_block *es;
struct block_device *bdev;
- BUG_ON(!ext4_has_feature_journal(sb));
+ if (WARN_ON_ONCE(!ext4_has_feature_journal(sb)))
+ return NULL;
bdev = ext4_blkdev_get(j_dev, sb);
if (bdev == NULL)
dev_t journal_dev;
int err = 0;
int really_read_only;
+ int journal_dev_ro;
- BUG_ON(!ext4_has_feature_journal(sb));
+ if (WARN_ON_ONCE(!ext4_has_feature_journal(sb)))
+ return -EFSCORRUPTED;
if (journal_devnum &&
journal_devnum != le32_to_cpu(es->s_journal_dev)) {
} else
journal_dev = new_decode_dev(le32_to_cpu(es->s_journal_dev));
- really_read_only = bdev_read_only(sb->s_bdev);
+ if (journal_inum && journal_dev) {
+ ext4_msg(sb, KERN_ERR,
+ "filesystem has both journal inode and journal device!");
+ return -EINVAL;
+ }
+
+ if (journal_inum) {
+ journal = ext4_get_journal(sb, journal_inum);
+ if (!journal)
+ return -EINVAL;
+ } else {
+ journal = ext4_get_dev_journal(sb, journal_dev);
+ if (!journal)
+ return -EINVAL;
+ }
+
+ journal_dev_ro = bdev_read_only(journal->j_dev);
+ really_read_only = bdev_read_only(sb->s_bdev) | journal_dev_ro;
+
+ if (journal_dev_ro && !sb_rdonly(sb)) {
+ ext4_msg(sb, KERN_ERR,
+ "journal device read-only, try mounting with '-o ro'");
+ err = -EROFS;
+ goto err_out;
+ }
/*
* Are we loading a blank journal or performing recovery after a
ext4_msg(sb, KERN_ERR, "write access "
"unavailable, cannot proceed "
"(try mounting with noload)");
- return -EROFS;
+ err = -EROFS;
+ goto err_out;
}
ext4_msg(sb, KERN_INFO, "write access will "
"be enabled during recovery");
}
}
- if (journal_inum && journal_dev) {
- ext4_msg(sb, KERN_ERR, "filesystem has both journal "
- "and inode journals!");
- return -EINVAL;
- }
-
- if (journal_inum) {
- if (!(journal = ext4_get_journal(sb, journal_inum)))
- return -EINVAL;
- } else {
- if (!(journal = ext4_get_dev_journal(sb, journal_dev)))
- return -EINVAL;
- }
-
if (!(journal->j_flags & JBD2_BARRIER))
ext4_msg(sb, KERN_INFO, "barriers disabled");
if (err) {
ext4_msg(sb, KERN_ERR, "error loading journal");
- jbd2_journal_destroy(journal);
- return err;
+ goto err_out;
}
EXT4_SB(sb)->s_journal = journal;
- ext4_clear_journal_err(sb, es);
+ err = ext4_clear_journal_err(sb, es);
+ if (err) {
+ EXT4_SB(sb)->s_journal = NULL;
+ jbd2_journal_destroy(journal);
+ return err;
+ }
if (!really_read_only && journal_devnum &&
journal_devnum != le32_to_cpu(es->s_journal_dev)) {
}
return 0;
+
+err_out:
+ jbd2_journal_destroy(journal);
+ return err;
}
static int ext4_commit_super(struct super_block *sb, int sync)
if (!sbh || block_device_ejected(sb))
return error;
- /*
- * The superblock bh should be mapped, but it might not be if the
- * device was hot-removed. Not much we can do but fail the I/O.
- */
- if (!buffer_mapped(sbh))
- return error;
-
/*
* If the file system is mounted read-only, don't update the
* superblock write time. This avoids updating the superblock
* remounting) the filesystem readonly, then we will end up with a
* consistent fs on disk. Record that fact.
*/
-static void ext4_mark_recovery_complete(struct super_block *sb,
- struct ext4_super_block *es)
+static int ext4_mark_recovery_complete(struct super_block *sb,
+ struct ext4_super_block *es)
{
+ int err;
journal_t *journal = EXT4_SB(sb)->s_journal;
if (!ext4_has_feature_journal(sb)) {
- BUG_ON(journal != NULL);
- return;
+ if (journal != NULL) {
+ ext4_error(sb, "Journal got removed while the fs was "
+ "mounted!");
+ return -EFSCORRUPTED;
+ }
+ return 0;
}
jbd2_journal_lock_updates(journal);
- if (jbd2_journal_flush(journal) < 0)
+ err = jbd2_journal_flush(journal);
+ if (err < 0)
goto out;
if (ext4_has_feature_journal_needs_recovery(sb) && sb_rdonly(sb)) {
ext4_clear_feature_journal_needs_recovery(sb);
ext4_commit_super(sb, 1);
}
-
out:
jbd2_journal_unlock_updates(journal);
+ return err;
}
/*
* has recorded an error from a previous lifetime, move that error to the
* main filesystem now.
*/
-static void ext4_clear_journal_err(struct super_block *sb,
+static int ext4_clear_journal_err(struct super_block *sb,
struct ext4_super_block *es)
{
journal_t *journal;
int j_errno;
const char *errstr;
- BUG_ON(!ext4_has_feature_journal(sb));
+ if (!ext4_has_feature_journal(sb)) {
+ ext4_error(sb, "Journal got removed while the fs was mounted!");
+ return -EFSCORRUPTED;
+ }
journal = EXT4_SB(sb)->s_journal;
jbd2_journal_clear_err(journal);
jbd2_journal_update_sb_errno(journal);
}
+ return 0;
}
/*
{
struct ext4_super_block *es;
struct ext4_sb_info *sbi = EXT4_SB(sb);
- unsigned long old_sb_flags;
+ unsigned long old_sb_flags, vfs_flags;
struct ext4_mount_options old_opts;
int enable_quota = 0;
ext4_group_t g;
if (sbi->s_journal && sbi->s_journal->j_task->io_context)
journal_ioprio = sbi->s_journal->j_task->io_context->ioprio;
+ /*
+ * Some options can be enabled by ext4 and/or by VFS mount flag
+ * either way we need to make sure it matches in both *flags and
+ * s_flags. Copy those selected flags from *flags to s_flags
+ */
+ vfs_flags = SB_LAZYTIME | SB_I_VERSION;
+ sb->s_flags = (sb->s_flags & ~vfs_flags) | (*flags & vfs_flags);
+
if (!parse_options(data, sb, NULL, &journal_ioprio, 1)) {
err = -EINVAL;
goto restore_opts;
set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
}
- if (*flags & SB_LAZYTIME)
- sb->s_flags |= SB_LAZYTIME;
-
if ((bool)(*flags & SB_RDONLY) != sb_rdonly(sb)) {
if (sbi->s_mount_flags & EXT4_MF_FS_ABORTED) {
err = -EROFS;
(sbi->s_mount_state & EXT4_VALID_FS))
es->s_state = cpu_to_le16(sbi->s_mount_state);
- if (sbi->s_journal)
+ if (sbi->s_journal) {
+ /*
+ * We let remount-ro finish even if marking fs
+ * as clean failed...
+ */
ext4_mark_recovery_complete(sb, es);
+ }
if (sbi->s_mmp_tsk)
kthread_stop(sbi->s_mmp_tsk);
} else {
goto restore_opts;
}
+ /*
+ * Update the original bdev mapping's wb_err value
+ * which could be used to detect the metadata async
+ * write error.
+ */
+ errseq_check_and_advance(&sb->s_bdev->bd_inode->i_mapping->wb_err,
+ &sbi->s_bdev_wb_err);
+
/*
* Mounting a RDONLY partition read-write, so reread
* and store the current valid flag. (It may have
* been changed by e2fsck since we originally mounted
* the partition.)
*/
- if (sbi->s_journal)
- ext4_clear_journal_err(sb, es);
+ if (sbi->s_journal) {
+ err = ext4_clear_journal_err(sb, es);
+ if (err)
+ goto restore_opts;
+ }
sbi->s_mount_state = le16_to_cpu(es->s_state);
err = ext4_setup_super(sb, es, 0);
ext4_register_li_request(sb, first_not_zeroed);
}
- ext4_setup_system_zone(sb);
+ /*
+ * Handle creation of system zone data early because it can fail.
+ * Releasing of existing data is done when we are sure remount will
+ * succeed.
+ */
+ if (test_opt(sb, BLOCK_VALIDITY) && !sbi->system_blks) {
+ err = ext4_setup_system_zone(sb);
+ if (err)
+ goto restore_opts;
+ }
+
if (sbi->s_journal == NULL && !(old_sb_flags & SB_RDONLY)) {
err = ext4_commit_super(sb, 1);
if (err)
}
}
#endif
+ if (!test_opt(sb, BLOCK_VALIDITY) && sbi->system_blks)
+ ext4_release_system_zone(sb);
+
+ /*
+ * Some options can be enabled by ext4 and/or by VFS mount flag
+ * either way we need to make sure it matches in both *flags and
+ * s_flags. Copy those selected flags from s_flags to *flags
+ */
+ *flags = (*flags & ~vfs_flags) | (sb->s_flags & vfs_flags);
- *flags = (*flags & ~SB_LAZYTIME) | (sb->s_flags & SB_LAZYTIME);
ext4_msg(sb, KERN_INFO, "re-mounted. Opts: %s", orig_data);
kfree(orig_data);
return 0;
sbi->s_commit_interval = old_opts.s_commit_interval;
sbi->s_min_batch_time = old_opts.s_min_batch_time;
sbi->s_max_batch_time = old_opts.s_max_batch_time;
+ if (!test_opt(sb, BLOCK_VALIDITY) && sbi->system_blks)
+ ext4_release_system_zone(sb);
#ifdef CONFIG_QUOTA
sbi->s_jquota_fmt = old_opts.s_jquota_fmt;
for (i = 0; i < EXT4_MAXQUOTAS; i++) {
projects / linux-2.6-microblaze.git / blobdiff