From: Nikolay Borisov nborisov@suse.com
[ Upstream commit ec7d6dfd73b2de1c6bc36f832542061b0ca0e0ff ]
Those functions are going to be used even after inode cache is removed so moved them to a more appropriate place.
Signed-off-by: Nikolay Borisov nborisov@suse.com Reviewed-by: David Sterba dsterba@suse.com Signed-off-by: David Sterba dsterba@suse.com Stable-dep-of: 0004ff15ea26 ("btrfs: fix space cache inconsistency after error loading it from disk") Signed-off-by: Sasha Levin sashal@kernel.org --- fs/btrfs/disk-io.c | 55 ++++++++++++++++++++++++++++++++++++++++++++ fs/btrfs/disk-io.h | 2 ++ fs/btrfs/inode-map.c | 55 -------------------------------------------- fs/btrfs/inode-map.h | 3 --- 4 files changed, 57 insertions(+), 58 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 2a7778a88f03b..095c9e4f92248 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -4780,3 +4780,58 @@ static int btrfs_cleanup_transaction(struct btrfs_fs_info *fs_info)
return 0; } + +int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid) +{ + struct btrfs_path *path; + int ret; + struct extent_buffer *l; + struct btrfs_key search_key; + struct btrfs_key found_key; + int slot; + + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + + search_key.objectid = BTRFS_LAST_FREE_OBJECTID; + search_key.type = -1; + search_key.offset = (u64)-1; + ret = btrfs_search_slot(NULL, root, &search_key, path, 0, 0); + if (ret < 0) + goto error; + BUG_ON(ret == 0); /* Corruption */ + if (path->slots[0] > 0) { + slot = path->slots[0] - 1; + l = path->nodes[0]; + btrfs_item_key_to_cpu(l, &found_key, slot); + *objectid = max_t(u64, found_key.objectid, + BTRFS_FIRST_FREE_OBJECTID - 1); + } else { + *objectid = BTRFS_FIRST_FREE_OBJECTID - 1; + } + ret = 0; +error: + btrfs_free_path(path); + return ret; +} + +int btrfs_find_free_objectid(struct btrfs_root *root, u64 *objectid) +{ + int ret; + mutex_lock(&root->objectid_mutex); + + if (unlikely(root->highest_objectid >= BTRFS_LAST_FREE_OBJECTID)) { + btrfs_warn(root->fs_info, + "the objectid of root %llu reaches its highest value", + root->root_key.objectid); + ret = -ENOSPC; + goto out; + } + + *objectid = ++root->highest_objectid; + ret = 0; +out: + mutex_unlock(&root->objectid_mutex); + return ret; +} diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h index 182540bdcea0f..e3b96944ce10c 100644 --- a/fs/btrfs/disk-io.h +++ b/fs/btrfs/disk-io.h @@ -131,6 +131,8 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans, int btree_lock_page_hook(struct page *page, void *data, void (*flush_fn)(void *)); int btrfs_get_num_tolerated_disk_barrier_failures(u64 flags); +int btrfs_find_free_objectid(struct btrfs_root *root, u64 *objectid); +int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid); int __init btrfs_end_io_wq_init(void); void __cold btrfs_end_io_wq_exit(void);
diff --git a/fs/btrfs/inode-map.c b/fs/btrfs/inode-map.c index 76d2e43817eae..c74340d22624e 100644 --- a/fs/btrfs/inode-map.c +++ b/fs/btrfs/inode-map.c @@ -525,58 +525,3 @@ int btrfs_save_ino_cache(struct btrfs_root *root, extent_changeset_free(data_reserved); return ret; } - -int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid) -{ - struct btrfs_path *path; - int ret; - struct extent_buffer *l; - struct btrfs_key search_key; - struct btrfs_key found_key; - int slot; - - path = btrfs_alloc_path(); - if (!path) - return -ENOMEM; - - search_key.objectid = BTRFS_LAST_FREE_OBJECTID; - search_key.type = -1; - search_key.offset = (u64)-1; - ret = btrfs_search_slot(NULL, root, &search_key, path, 0, 0); - if (ret < 0) - goto error; - BUG_ON(ret == 0); /* Corruption */ - if (path->slots[0] > 0) { - slot = path->slots[0] - 1; - l = path->nodes[0]; - btrfs_item_key_to_cpu(l, &found_key, slot); - *objectid = max_t(u64, found_key.objectid, - BTRFS_FIRST_FREE_OBJECTID - 1); - } else { - *objectid = BTRFS_FIRST_FREE_OBJECTID - 1; - } - ret = 0; -error: - btrfs_free_path(path); - return ret; -} - -int btrfs_find_free_objectid(struct btrfs_root *root, u64 *objectid) -{ - int ret; - mutex_lock(&root->objectid_mutex); - - if (unlikely(root->highest_objectid >= BTRFS_LAST_FREE_OBJECTID)) { - btrfs_warn(root->fs_info, - "the objectid of root %llu reaches its highest value", - root->root_key.objectid); - ret = -ENOSPC; - goto out; - } - - *objectid = ++root->highest_objectid; - ret = 0; -out: - mutex_unlock(&root->objectid_mutex); - return ret; -} diff --git a/fs/btrfs/inode-map.h b/fs/btrfs/inode-map.h index 7a962811dffe0..629baf9aefb15 100644 --- a/fs/btrfs/inode-map.h +++ b/fs/btrfs/inode-map.h @@ -10,7 +10,4 @@ int btrfs_find_free_ino(struct btrfs_root *root, u64 *objectid); int btrfs_save_ino_cache(struct btrfs_root *root, struct btrfs_trans_handle *trans);
-int btrfs_find_free_objectid(struct btrfs_root *root, u64 *objectid); -int btrfs_find_highest_objectid(struct btrfs_root *root, u64 *objectid); - #endif