unsigned int leave_spinning:1;
unsigned int search_commit_root:1;
unsigned int need_commit_sem:1;
+ unsigned int skip_release_on_error:1;
};
/*
struct percpu_counter total_bytes_pinned;
struct list_head list;
+ struct list_head ro_bgs;
struct rw_semaphore groups_sem;
/* for block groups in our same type */
unsigned int ro:1;
unsigned int dirty:1;
unsigned int iref:1;
+ unsigned int has_caching_ctl:1;
+ unsigned int removed:1;
int disk_cache_state;
/* For delayed block group creation or deletion of empty block groups */
struct list_head bg_list;
+
+ /* For read-only block groups */
+ struct list_head ro_list;
+
+ atomic_t trimming;
};
/* delayed seq elem */
*/
u64 last_trans_log_full_commit;
unsigned long mount_opt;
+ /*
+ * Track requests for actions that need to be done during transaction
+ * commit (like for some mount options).
+ */
+ unsigned long pending_changes;
unsigned long compress_type:4;
int commit_interval;
/*
/* For btrfs to record security options */
struct security_mnt_opts security_opts;
+
+ /*
+ * Chunks that can't be freed yet (under a trim/discard operation)
+ * and will be latter freed. Protected by fs_info->chunk_mutex.
+ */
+ struct list_head pinned_chunks;
};
struct btrfs_subvolume_writers {
#define BTRFS_ROOT_DEFRAG_RUNNING 6
#define BTRFS_ROOT_FORCE_COW 7
#define BTRFS_ROOT_MULTI_LOG_TASKS 8
+#define BTRFS_ROOT_DIRTY 9
/*
* in ram representation of the tree. extent_root is used for all allocations
#define BTRFS_MOUNT_CHECK_INTEGRITY_INCLUDING_EXTENT_DATA (1 << 21)
#define BTRFS_MOUNT_PANIC_ON_FATAL_ERROR (1 << 22)
#define BTRFS_MOUNT_RESCAN_UUID_TREE (1 << 23)
-#define BTRFS_MOUNT_CHANGE_INODE_CACHE (1 << 24)
#define BTRFS_DEFAULT_COMMIT_INTERVAL (30)
#define BTRFS_DEFAULT_MAX_INLINE (8192)
#define btrfs_raw_test_opt(o, opt) ((o) & BTRFS_MOUNT_##opt)
#define btrfs_test_opt(root, opt) ((root)->fs_info->mount_opt & \
BTRFS_MOUNT_##opt)
+
#define btrfs_set_and_info(root, opt, fmt, args...) \
{ \
if (!btrfs_test_opt(root, opt)) \
btrfs_clear_opt(root->fs_info->mount_opt, opt); \
}
+/*
+ * Requests for changes that need to be done during transaction commit.
+ *
+ * Internal mount options that are used for special handling of the real
+ * mount options (eg. cannot be set during remount and have to be set during
+ * transaction commit)
+ */
+
+#define BTRFS_PENDING_SET_INODE_MAP_CACHE (0)
+#define BTRFS_PENDING_CLEAR_INODE_MAP_CACHE (1)
+#define BTRFS_PENDING_COMMIT (2)
+
+#define btrfs_test_pending(info, opt) \
+ test_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
+#define btrfs_set_pending(info, opt) \
+ set_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
+#define btrfs_clear_pending(info, opt) \
+ clear_bit(BTRFS_PENDING_##opt, &(info)->pending_changes)
+
+/*
+ * Helpers for setting pending mount option changes.
+ *
+ * Expects corresponding macros
+ * BTRFS_PENDING_SET_ and CLEAR_ + short mount option name
+ */
+#define btrfs_set_pending_and_info(info, opt, fmt, args...) \
+do { \
+ if (!btrfs_raw_test_opt((info)->mount_opt, opt)) { \
+ btrfs_info((info), fmt, ##args); \
+ btrfs_set_pending((info), SET_##opt); \
+ btrfs_clear_pending((info), CLEAR_##opt); \
+ } \
+} while(0)
+
+#define btrfs_clear_pending_and_info(info, opt, fmt, args...) \
+do { \
+ if (btrfs_raw_test_opt((info)->mount_opt, opt)) { \
+ btrfs_info((info), fmt, ##args); \
+ btrfs_set_pending((info), CLEAR_##opt); \
+ btrfs_clear_pending((info), SET_##opt); \
+ } \
+} while(0)
+
/*
* Inode flags
*/
u64 type, u64 chunk_objectid, u64 chunk_offset,
u64 size);
int btrfs_remove_block_group(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 group_start);
+ struct btrfs_root *root, u64 group_start,
+ struct extent_map *em);
void btrfs_delete_unused_bgs(struct btrfs_fs_info *fs_info);
void btrfs_create_pending_block_groups(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
u64 btrfs_account_ro_block_groups_free_space(struct btrfs_space_info *sinfo);
int btrfs_error_unpin_extent_range(struct btrfs_root *root,
u64 start, u64 end);
-int btrfs_error_discard_extent(struct btrfs_root *root, u64 bytenr,
- u64 num_bytes, u64 *actual_bytes);
+int btrfs_discard_extent(struct btrfs_root *root, u64 bytenr,
+ u64 num_bytes, u64 *actual_bytes);
int btrfs_force_chunk_alloc(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 type);
int btrfs_trim_fs(struct btrfs_root *root, struct fstrim_range *range);
int btrfs_delayed_refs_qgroup_accounting(struct btrfs_trans_handle *trans,
struct btrfs_fs_info *fs_info);
int __get_raid_index(u64 flags);
-int btrfs_start_nocow_write(struct btrfs_root *root);
-void btrfs_end_nocow_write(struct btrfs_root *root);
+int btrfs_start_write_no_snapshoting(struct btrfs_root *root);
+void btrfs_end_write_no_snapshoting(struct btrfs_root *root);
/* ctree.c */
int btrfs_bin_search(struct extent_buffer *eb, struct btrfs_key *key,
int level, int *slot);
int verify_dir_item(struct btrfs_root *root,
struct extent_buffer *leaf,
struct btrfs_dir_item *dir_item);
+struct btrfs_dir_item *btrfs_match_dir_item_name(struct btrfs_root *root,
+ struct btrfs_path *path,
+ const char *name,
+ int name_len);
/* orphan.c */
int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
struct btrfs_trans_handle *trans, int mode,
u64 start, u64 num_bytes, u64 min_size,
loff_t actual_len, u64 *alloc_hint);
+int btrfs_inode_check_errors(struct inode *inode);
extern const struct dentry_operations btrfs_dentry_operations;
/* ioctl.c */
struct page **pages, size_t num_pages,
loff_t pos, size_t write_bytes,
struct extent_state **cached);
+int btrfs_fdatawrite_range(struct inode *inode, loff_t start, loff_t end);
/* tree-defrag.c */
int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
/* dev-replace.c */
void btrfs_bio_counter_inc_blocked(struct btrfs_fs_info *fs_info);
void btrfs_bio_counter_inc_noblocked(struct btrfs_fs_info *fs_info);
-void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info);
+void btrfs_bio_counter_sub(struct btrfs_fs_info *fs_info, s64 amount);
+
+static inline void btrfs_bio_counter_dec(struct btrfs_fs_info *fs_info)
+{
+ btrfs_bio_counter_sub(fs_info, 1);
+}
/* reada.c */
struct reada_control {
projects / cascardo / linux.git / blobdiff