Btrfs: Make fallocate(2) more ENOSPC friendly

[cascardo/linux.git] / fs / btrfs / ctree.h

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index dfd7e6f..fcfbefb 100644 (file)
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -859,8 +859,9 @@ struct btrfs_fs_info {
        struct mutex ordered_operations_mutex;
        struct rw_semaphore extent_commit_sem;
 
-       struct rw_semaphore subvol_sem;
+       struct rw_semaphore cleanup_work_sem;
 
+       struct rw_semaphore subvol_sem;
        struct srcu_struct subvol_srcu;
 
        struct list_head trans_list;
@@ -1034,12 +1035,12 @@ struct btrfs_root {
        int ref_cows;
        int track_dirty;
        int in_radix;
+       int clean_orphans;
 
        u64 defrag_trans_start;
        struct btrfs_key defrag_progress;
        struct btrfs_key defrag_max;
        int defrag_running;
-       int defrag_level;
        char *name;
        int in_sysfs;
 
@@ -1153,6 +1154,7 @@ struct btrfs_root {
 #define BTRFS_MOUNT_FLUSHONCOMMIT       (1 << 7)
 #define BTRFS_MOUNT_SSD_SPREAD         (1 << 8)
 #define BTRFS_MOUNT_NOSSD              (1 << 9)
+#define BTRFS_MOUNT_DISCARD            (1 << 10)
 
 #define btrfs_clear_opt(o, opt)                ((o) &= ~BTRFS_MOUNT_##opt)
 #define btrfs_set_opt(o, opt)          ((o) |= BTRFS_MOUNT_##opt)
@@ -2088,6 +2090,10 @@ int btrfs_split_item(struct btrfs_trans_handle *trans,
                     struct btrfs_path *path,
                     struct btrfs_key *new_key,
                     unsigned long split_offset);
+int btrfs_duplicate_item(struct btrfs_trans_handle *trans,
+                        struct btrfs_root *root,
+                        struct btrfs_path *path,
+                        struct btrfs_key *new_key);
 int btrfs_search_slot(struct btrfs_trans_handle *trans, struct btrfs_root
                      *root, struct btrfs_key *key, struct btrfs_path *p, int
                      ins_len, int cow);
@@ -2343,13 +2349,10 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync);
 int btrfs_drop_extent_cache(struct inode *inode, u64 start, u64 end,
                            int skip_pinned);
 int btrfs_check_file(struct btrfs_root *root, struct inode *inode);
-extern struct file_operations btrfs_file_operations;
-int btrfs_drop_extents(struct btrfs_trans_handle *trans,
-                      struct btrfs_root *root, struct inode *inode,
-                      u64 start, u64 end, u64 locked_end,
-                      u64 inline_limit, u64 *hint_block, int drop_cache);
+extern const struct file_operations btrfs_file_operations;
+int btrfs_drop_extents(struct btrfs_trans_handle *trans, struct inode *inode,
+                      u64 start, u64 end, u64 *hint_byte, int drop_cache);
 int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
-                             struct btrfs_root *root,
                              struct inode *inode, u64 start, u64 end);
 int btrfs_release_file(struct inode *inode, struct file *file);