diff options
| author | Chris Mason <chris.mason@oracle.com> | 2009-01-14 13:40:46 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-01-15 10:53:00 +0100 |
| commit | cf47b8f3d96b0b8b10b557444a28b3ca4024ff82 (patch) | |
| tree | 60c33e85ea5d5707f8fac98f57ab393202bfe4ea | |
| parent | ac6e60ee405aa3bf718f7fe4cb01b7ee0b8877ec (diff) | |
| download | talos-obmc-linux-cf47b8f3d96b0b8b10b557444a28b3ca4024ff82.tar.gz talos-obmc-linux-cf47b8f3d96b0b8b10b557444a28b3ca4024ff82.zip | |
Btrfs: stop spinning on mutex_trylock and let the adaptive code spin for us
Mutexes now spin internally and the btrfs spin is no longer required for
performance.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | fs/btrfs/locking.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/fs/btrfs/locking.c b/fs/btrfs/locking.c index 39bae7761db6..40ba8e8962f8 100644 --- a/fs/btrfs/locking.c +++ b/fs/btrfs/locking.c @@ -37,16 +37,6 @@ int btrfs_tree_lock(struct extent_buffer *eb) { - int i; - - if (mutex_trylock(&eb->mutex)) - return 0; - for (i = 0; i < 512; i++) { - cpu_relax(); - if (mutex_trylock(&eb->mutex)) - return 0; - } - cpu_relax(); mutex_lock_nested(&eb->mutex, BTRFS_MAX_LEVEL - btrfs_header_level(eb)); return 0; } |
