diff options
| author | David Sterba <dsterba@suse.com> | 2019-05-15 15:31:04 +0200 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2019-07-01 13:34:53 +0200 |
| commit | 5911c8fe05c54c9f74a6467650e6493e4808cd01 (patch) | |
| tree | 039d2c9ea71a7d7f74d7a1ba483e8bf989d8737a /fs/btrfs/backref.h | |
| parent | 9b4e675a9978800995f83af0ed90e890ca501f31 (diff) | |
| download | linux-5911c8fe05c54c9f74a6467650e6493e4808cd01.tar.gz | |
btrfs: fiemap: preallocate ulists for btrfs_check_shared
btrfs_check_shared looks up parents of a given extent and uses ulists for that. These are allocated and freed repeatedly. Preallocation in the caller will avoid the overhead and also allow us to use the GFP_KERNEL as it is happens before the extent locks are taken. Reviewed-by: Nikolay Borisov <nborisov@suse.com> Reviewed-by: Filipe Manana <fdmanana@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/backref.h')
| -rw-r--r-- | fs/btrfs/backref.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/backref.h b/fs/btrfs/backref.h index 54d58988483a..777f61dc081e 100644 --- a/fs/btrfs/backref.h +++ b/fs/btrfs/backref.h @@ -57,7 +57,8 @@ int btrfs_find_one_extref(struct btrfs_root *root, u64 inode_objectid, u64 start_off, struct btrfs_path *path, struct btrfs_inode_extref **ret_extref, u64 *found_off); -int btrfs_check_shared(struct btrfs_root *root, u64 inum, u64 bytenr); +int btrfs_check_shared(struct btrfs_root *root, u64 inum, u64 bytenr, + struct ulist *roots, struct ulist *tmp_ulist); int __init btrfs_prelim_ref_init(void); void __cold btrfs_prelim_ref_exit(void); |