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Btrfs: remove duplicated ino cache's inode lookup

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We're doing a unnecessary extra lookup of the ino cache's
inode when we already have it (and holding a reference)
during the process of saving the ino cache contents to disk.
Therefore remove this extra lookup.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
This commit is contained in:
Filipe David Borba Manana 2013-09-20 14:43:28 +01:00 committed by Chris Mason
parent d4b4087c43
commit 53645a91f4
3 changed files with 5 additions and 9 deletions
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9
fs/btrfs/free-space-cache.c
View file

@ -2967,19 +2967,15 @@ int load_free_ino_cache(struct btrfs_fs_info *fs_info, struct btrfs_root *root)
int btrfs_write_out_ino_cache(struct btrfs_root *root,
struct btrfs_trans_handle *trans,
struct btrfs_path *path)
struct btrfs_path *path,
struct inode *inode)
{
struct btrfs_free_space_ctl *ctl = root->free_ino_ctl;
struct inode *inode;
int ret;
if (!btrfs_test_opt(root, INODE_MAP_CACHE))
return 0;
inode = lookup_free_ino_inode(root, path);
if (IS_ERR(inode))
return 0;
ret = __btrfs_write_out_cache(root, inode, ctl, NULL, trans, path, 0);
if (ret) {
btrfs_delalloc_release_metadata(inode, inode->i_size);
@ -2990,7 +2986,6 @@ int btrfs_write_out_ino_cache(struct btrfs_root *root,
#endif
}
iput(inode);
return ret;
}

3
fs/btrfs/free-space-cache.h
View file

@ -76,7 +76,8 @@ int load_free_ino_cache(struct btrfs_fs_info *fs_info,
struct btrfs_root *root);
int btrfs_write_out_ino_cache(struct btrfs_root *root,
struct btrfs_trans_handle *trans,
struct btrfs_path *path);
struct btrfs_path *path,
struct inode *inode);
void btrfs_init_free_space_ctl(struct btrfs_block_group_cache *block_group);
int __btrfs_add_free_space(struct btrfs_free_space_ctl *ctl,

2
fs/btrfs/inode-map.c
View file

@ -503,7 +503,7 @@ int btrfs_save_ino_cache(struct btrfs_root *root,
}
btrfs_free_reserved_data_space(inode, prealloc);
ret = btrfs_write_out_ino_cache(root, trans, path);
ret = btrfs_write_out_ino_cache(root, trans, path, inode);
out_put:
iput(inode);
out_release: