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| author | Miao Xie <miaox@cn.fujitsu.com> | 2012-09-06 14:01:51 +0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@fusionio.com> | 2012-10-01 23:19:11 +0400 |
| commit | 6352b91da1a2108bb8cc5115e8714f90d706f15f (patch) | |
| tree | 41897bbe836bb7f8b2bbfef24528407d1c79b8b0 /fs/btrfs/ordered-data.h | |
| parent | b9a8cc5bef963b76c5b6c3016b7e91988a3e758b (diff) | |
| download | linux-6352b91da1a2108bb8cc5115e8714f90d706f15f.tar.xz | |
Btrfs: use a slab for ordered extents allocation
The ordered extent allocation is in the fast path of the IO, so use a slab
to improve the speed of the allocation.
"Size of the struct is 280, so this will fall into the size-512 bucket,
giving 8 objects per page, while own slab will pack 14 objects into a page.
Another benefit I see is to check for leaked objects when the module is
removed (and the cache destroy takes place)."
-- David Sterba
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Diffstat (limited to 'fs/btrfs/ordered-data.h')
| -rw-r--r-- | fs/btrfs/ordered-data.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/btrfs/ordered-data.h b/fs/btrfs/ordered-data.h index c2443a431ca5..d1ddaeff1356 100644 --- a/fs/btrfs/ordered-data.h +++ b/fs/btrfs/ordered-data.h @@ -192,4 +192,6 @@ void btrfs_add_ordered_operation(struct btrfs_trans_handle *trans, struct inode *inode); void btrfs_wait_ordered_extents(struct btrfs_root *root, int nocow_only, int delay_iput); +int __init ordered_data_init(void); +void ordered_data_exit(void); #endif |