| commit | 833f73299fdf4497af1552e219e95661f4d2cdca | |
| author | Dave Kleikamp <shaggy@austin.ibm.com> | |
| Tue, 19 Sep 2006 03:12:33 +0000 (18 20:12 -0700) | ||
| committer | Linus Torvalds <torvalds@g5.osdl.org> | |
| Tue, 19 Sep 2006 14:59:59 +0000 (19 07:59 -0700) | ||
| tree | 3a8cbf486dce86116ada64d170896141ceee4692 | treesnapshot (tar.gz zip) |
| parent | ac7fb273ca1d0b4fb354575bb6e101ffd09e0b54 | commitdiff |
[PATCH] EXT2: Remove superblock lock contention in ext2_statfs
Fix a performance degradation introduced in 2.6.17. (30% degradation
running dbench with 16 threads)
Commit 21730eed11de42f22afcbd43f450a1872a0b5ea1, which claims to make
EXT2_DEBUG work again, moves the taking of the kernel lock out of
debug-only code in ext2_count_free_inodes and ext2_count_free_blocks and
into ext2_statfs.
The same problem was fixed in ext3 by removing the lock completely (commit
5b11687924e40790deb0d5f959247ade82196665)
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix a performance degradation introduced in 2.6.17. (30% degradation
running dbench with 16 threads)
Commit 21730eed11de42f22afcbd43f450a1872a0b5ea1, which claims to make
EXT2_DEBUG work again, moves the taking of the kernel lock out of
debug-only code in ext2_count_free_inodes and ext2_count_free_blocks and
into ext2_statfs.
The same problem was fixed in ext3 by removing the lock completely (commit
5b11687924e40790deb0d5f959247ade82196665)
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| fs/ext2/balloc.c | diffblobblamehistory | |
| fs/ext2/ialloc.c | diffblobblamehistory | |
| fs/ext2/super.c | diffblobblamehistory |