rwlock_t global_root_lock;
struct rb_root global_root_tree;
- spinlock_t fs_roots_radix_lock;
- struct radix_tree_root fs_roots_radix;
+ /* The xarray that holds all the FS roots */
+ spinlock_t fs_roots_lock;
+ struct xarray fs_roots;
/* block group cache stuff */
- spinlock_t block_group_cache_lock;
- u64 first_logical_byte;
- struct rb_root block_group_cache_tree;
+ rwlock_t block_group_cache_lock;
+ struct rb_root_cached block_group_cache_tree;
/* keep track of unallocated space */
atomic64_t free_chunk_space;
* two
*/
struct btrfs_workqueue *workers;
+ struct btrfs_workqueue *hipri_workers;
struct btrfs_workqueue *delalloc_workers;
struct btrfs_workqueue *flush_workers;
struct btrfs_workqueue *endio_workers;
struct btrfs_workqueue *endio_meta_workers;
struct btrfs_workqueue *endio_raid56_workers;
- struct btrfs_workqueue *rmw_workers;
+ struct workqueue_struct *rmw_workers;
struct btrfs_workqueue *endio_meta_write_workers;
struct btrfs_workqueue *endio_write_workers;
struct btrfs_workqueue *endio_freespace_worker;
* running.
*/
refcount_t scrub_workers_refcnt;
- struct btrfs_workqueue *scrub_workers;
- struct btrfs_workqueue *scrub_wr_completion_workers;
- struct btrfs_workqueue *scrub_parity_workers;
+ struct workqueue_struct *scrub_workers;
+ struct workqueue_struct *scrub_wr_completion_workers;
+ struct workqueue_struct *scrub_parity_workers;
struct btrfs_subpage_info *subpage_info;
struct btrfs_discard_ctl discard_ctl;
struct btrfs_delayed_root *delayed_root;
- /* Extent buffer radix tree */
+ /* Extent buffer xarray */
spinlock_t buffer_lock;
/* Entries are eb->start / sectorsize */
- struct radix_tree_root buffer_radix;
+ struct xarray extent_buffers;
/* next backup root to be overwritten */
int backup_root_index;
* Zone size > 0 when in ZONED mode, otherwise it's used for a check
* if the mode is enabled
*/
- union {
- u64 zone_size;
- u64 zoned;
- };
+ u64 zone_size;
struct mutex zoned_meta_io_lock;
spinlock_t treelog_bg_lock;
*/
BTRFS_ROOT_SHAREABLE,
BTRFS_ROOT_TRACK_DIRTY,
- BTRFS_ROOT_IN_RADIX,
+ /* The root is tracked in fs_info::fs_roots */
+ BTRFS_ROOT_REGISTERED,
BTRFS_ROOT_ORPHAN_ITEM_INSERTED,
BTRFS_ROOT_DEFRAG_RUNNING,
BTRFS_ROOT_FORCE_COW,
struct rb_root inode_tree;
/*
- * radix tree that keeps track of delayed nodes of every inode,
- * protected by inode_lock
+ * Xarray that keeps track of delayed nodes of every inode, protected
+ * by inode_lock
*/
- struct radix_tree_root delayed_nodes_tree;
+ struct xarray delayed_nodes;
/*
* right now this just gets used so that a root has its own devid
* for stat. It may be used for more later
u64 bytenr, u64 num_bytes);
int btrfs_exclude_logged_extents(struct extent_buffer *eb);
int btrfs_cross_ref_exist(struct btrfs_root *root,
- u64 objectid, u64 offset, u64 bytenr, bool strict);
+ u64 objectid, u64 offset, u64 bytenr, bool strict,
+ struct btrfs_path *path);
struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
u64 parent, u64 root_objectid,
int btrfs_dec_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct extent_buffer *buf, int full_backref);
int btrfs_set_disk_extent_flags(struct btrfs_trans_handle *trans,
- struct extent_buffer *eb, u64 flags,
- int level, int is_data);
+ struct extent_buffer *eb, u64 flags, int level);
int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_ref *ref);
int btrfs_free_reserved_extent(struct btrfs_fs_info *fs_info,
void btrfs_delalloc_release_extents(struct btrfs_inode *inode, u64 num_bytes);
int btrfs_delalloc_reserve_metadata(struct btrfs_inode *inode, u64 num_bytes,
- u64 disk_num_bytes);
+ u64 disk_num_bytes, bool noflush);
u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo);
int btrfs_error_unpin_extent_range(struct btrfs_fs_info *fs_info,
u64 start, u64 end);
int btrfs_search_backwards(struct btrfs_root *root, struct btrfs_key *key,
struct btrfs_path *path);
+int btrfs_get_next_valid_item(struct btrfs_root *root, struct btrfs_key *key,
+ struct btrfs_path *path);
+
+/*
+ * Search in @root for a given @key, and store the slot found in @found_key.
+ *
+ * @root: The root node of the tree.
+ * @key: The key we are looking for.
+ * @found_key: Will hold the found item.
+ * @path: Holds the current slot/leaf.
+ * @iter_ret: Contains the value returned from btrfs_search_slot or
+ * btrfs_get_next_valid_item, whichever was executed last.
+ *
+ * The @iter_ret is an output variable that will contain the return value of
+ * btrfs_search_slot, if it encountered an error, or the value returned from
+ * btrfs_get_next_valid_item otherwise. That return value can be 0, if a valid
+ * slot was found, 1 if there were no more leaves, and <0 if there was an error.
+ *
+ * It's recommended to use a separate variable for iter_ret and then use it to
+ * set the function return value so there's no confusion of the 0/1/errno
+ * values stemming from btrfs_search_slot.
+ */
+#define btrfs_for_each_slot(root, key, found_key, path, iter_ret) \
+ for (iter_ret = btrfs_search_slot(NULL, (root), (key), (path), 0, 0); \
+ (iter_ret) >= 0 && \
+ (iter_ret = btrfs_get_next_valid_item((root), (found_key), (path))) == 0; \
+ (path)->slots[0]++ \
+ )
+
static inline int btrfs_next_old_item(struct btrfs_root *root,
struct btrfs_path *p, u64 time_seq)
{
int btrfs_find_orphan_item(struct btrfs_root *root, u64 offset);
/* file-item.c */
-struct btrfs_dio_private;
int btrfs_del_csums(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 bytenr, u64 len);
blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, u8 *dst);
u64 btrfs_file_extent_end(const struct btrfs_path *path);
/* inode.c */
-blk_status_t btrfs_submit_data_bio(struct inode *inode, struct bio *bio,
- int mirror_num, unsigned long bio_flags);
+void btrfs_submit_data_bio(struct inode *inode, struct bio *bio,
+ int mirror_num, enum btrfs_compression_type compress_type);
unsigned int btrfs_verify_data_csum(struct btrfs_bio *bbio,
u32 bio_offset, struct page *page,
u64 start, u64 end);
int btrfs_set_extent_delalloc(struct btrfs_inode *inode, u64 start, u64 end,
unsigned int extra_bits,
struct extent_state **cached_state);
-int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,
- struct btrfs_root *new_root,
- struct btrfs_root *parent_root,
- struct user_namespace *mnt_userns);
+struct btrfs_new_inode_args {
+ /* Input */
+ struct inode *dir;
+ struct dentry *dentry;
+ struct inode *inode;
+ bool orphan;
+ bool subvol;
+
+ /*
+ * Output from btrfs_new_inode_prepare(), input to
+ * btrfs_create_new_inode().
+ */
+ struct posix_acl *default_acl;
+ struct posix_acl *acl;
+};
+int btrfs_new_inode_prepare(struct btrfs_new_inode_args *args,
+ unsigned int *trans_num_items);
+int btrfs_create_new_inode(struct btrfs_trans_handle *trans,
+ struct btrfs_new_inode_args *args);
+void btrfs_new_inode_args_destroy(struct btrfs_new_inode_args *args);
+struct inode *btrfs_new_subvol_inode(struct user_namespace *mnt_userns,
+ struct inode *dir);
void btrfs_set_delalloc_extent(struct inode *inode, struct extent_state *state,
unsigned *bits);
void btrfs_clear_delalloc_extent(struct inode *inode,
struct extent_state *orig, u64 split);
void btrfs_set_range_writeback(struct btrfs_inode *inode, u64 start, u64 end);
vm_fault_t btrfs_page_mkwrite(struct vm_fault *vmf);
-int btrfs_readpage(struct file *file, struct page *page);
void btrfs_evict_inode(struct inode *inode);
int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc);
struct inode *btrfs_alloc_inode(struct super_block *sb);
ssize_t btrfs_do_encoded_write(struct kiocb *iocb, struct iov_iter *from,
const struct btrfs_ioctl_encoded_io_args *encoded);
+ssize_t btrfs_dio_rw(struct kiocb *iocb, struct iov_iter *iter, size_t done_before);
+
extern const struct dentry_operations btrfs_dentry_operations;
-extern const struct iomap_ops btrfs_dio_iomap_ops;
-extern const struct iomap_dio_ops btrfs_dio_ops;
/* Inode locking type flags, by default the exclusive lock is taken */
#define BTRFS_ILOCK_SHARED (1U << 0)
void btrfs_update_inode_bytes(struct btrfs_inode *inode,
const u64 add_bytes,
const u64 del_bytes);
+void btrfs_assert_inode_range_clean(struct btrfs_inode *inode, u64 start, u64 end);
/* ioctl.c */
long btrfs_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
{
}
-#ifdef CONFIG_PRINTK
+#ifdef CONFIG_PRINTK_INDEX
+
+#define btrfs_printk(fs_info, fmt, args...) \
+do { \
+ printk_index_subsys_emit("%sBTRFS %s (device %s): ", NULL, fmt); \
+ _btrfs_printk(fs_info, fmt, ##args); \
+} while (0)
+
__printf(2, 3)
__cold
-void btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...);
+void _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...);
+
+#elif defined(CONFIG_PRINTK)
+
+#define btrfs_printk(fs_info, fmt, args...) \
+ _btrfs_printk(fs_info, fmt, ##args)
+
+__printf(2, 3)
+__cold
+void _btrfs_printk(const struct btrfs_fs_info *fs_info, const char *fmt, ...);
+
#else
+
#define btrfs_printk(fs_info, fmt, args...) \
btrfs_no_printk(fs_info, fmt, ##args)
#endif
__LINE__, (errno)); \
} while (0)
+#ifdef CONFIG_PRINTK_INDEX
+
#define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \
-do { \
- __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \
- (errno), fmt, ##args); \
+do { \
+ printk_index_subsys_emit( \
+ "BTRFS: error (device %s%s) in %s:%d: errno=%d %s", \
+ KERN_CRIT, fmt); \
+ __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \
+ (errno), fmt, ##args); \
} while (0)
+#else
+
+#define btrfs_handle_fs_error(fs_info, errno, fmt, args...) \
+ __btrfs_handle_fs_error((fs_info), __func__, __LINE__, \
+ (errno), fmt, ##args)
+
+#endif
+
#define BTRFS_FS_ERROR(fs_info) (unlikely(test_bit(BTRFS_FS_STATE_ERROR, \
&(fs_info)->fs_state)))
#define BTRFS_FS_LOG_CLEANUP_ERROR(fs_info) \
struct posix_acl *btrfs_get_acl(struct inode *inode, int type, bool rcu);
int btrfs_set_acl(struct user_namespace *mnt_userns, struct inode *inode,
struct posix_acl *acl, int type);
-int btrfs_init_acl(struct btrfs_trans_handle *trans,
- struct inode *inode, struct inode *dir);
+int __btrfs_set_acl(struct btrfs_trans_handle *trans, struct inode *inode,
+ struct posix_acl *acl, int type);
#else
#define btrfs_get_acl NULL
#define btrfs_set_acl NULL
-static inline int btrfs_init_acl(struct btrfs_trans_handle *trans,
- struct inode *inode, struct inode *dir)
+static inline int __btrfs_set_acl(struct btrfs_trans_handle *trans,
+ struct inode *inode, struct posix_acl *acl,
+ int type)
{
- return 0;
+ return -EOPNOTSUPP;
}
#endif
static inline bool btrfs_is_zoned(const struct btrfs_fs_info *fs_info)
{
- return fs_info->zoned != 0;
+ return fs_info->zone_size > 0;
}
static inline bool btrfs_is_data_reloc_root(const struct btrfs_root *root)
projects / linux-2.6-microblaze.git / blobdiff