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| author | Miao Xie | 2012-09-06 12:01:51 +0200 |
|---|---|---|
| committer | Chris Mason | 2012-10-01 21:19:11 +0200 |
| commit | 6352b91da1a2108bb8cc5115e8714f90d706f15f (patch) | |
| tree | 41897bbe836bb7f8b2bbfef24528407d1c79b8b0 /fs/btrfs/super.c | |
| parent | Btrfs: fix file extent discount problem in the, snapshot (diff) | |
| download | kernel-qcow2-linux-6352b91da1a2108bb8cc5115e8714f90d706f15f.tar.gz kernel-qcow2-linux-6352b91da1a2108bb8cc5115e8714f90d706f15f.tar.xz kernel-qcow2-linux-6352b91da1a2108bb8cc5115e8714f90d706f15f.zip | |
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/super.c')
| -rw-r--r-- | fs/btrfs/super.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index 83d6f9f9c220..06ff1dd0f9b7 100644 --- a/fs/btrfs/super.c +++ b/fs/btrfs/super.c @@ -1620,10 +1620,14 @@ static int __init init_btrfs_fs(void) if (err) goto free_extent_io; - err = btrfs_delayed_inode_init(); + err = ordered_data_init(); if (err) goto free_extent_map; + err = btrfs_delayed_inode_init(); + if (err) + goto free_ordered_data; + err = btrfs_interface_init(); if (err) goto free_delayed_inode; @@ -1641,6 +1645,8 @@ unregister_ioctl: btrfs_interface_exit(); free_delayed_inode: btrfs_delayed_inode_exit(); +free_ordered_data: + ordered_data_exit(); free_extent_map: extent_map_exit(); free_extent_io: @@ -1657,6 +1663,7 @@ static void __exit exit_btrfs_fs(void) { btrfs_destroy_cachep(); btrfs_delayed_inode_exit(); + ordered_data_exit(); extent_map_exit(); extent_io_exit(); btrfs_interface_exit(); |