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| author | Theodore Ts'o <tytso@mit.edu> | 2012-04-16 18:16:20 +0200 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-04-16 18:16:20 +0200 |
| commit | 9cd70b347e9761ea2d2ac3d758c529a48a8193e6 (patch) | |
| tree | f215d10558a62c34aff4528f1c40f1b154bd6c25 /fs/ext4/extents.c | |
| parent | Linux 3.4-rc2 (diff) | |
| download | linux-9cd70b347e9761ea2d2ac3d758c529a48a8193e6.tar.xz linux-9cd70b347e9761ea2d2ac3d758c529a48a8193e6.zip | |
ext4: address scalability issue by removing extent cache statistics
Andi Kleen and Tim Chen have reported that under certain circumstances
the extent cache statistics are causing scalability problems due to
cache line bounces.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
Diffstat (limited to 'fs/ext4/extents.c')
| -rw-r--r-- | fs/ext4/extents.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 1421938e6792..8a12cd207679 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -2066,10 +2066,6 @@ static int ext4_ext_check_cache(struct inode *inode, ext4_lblk_t block, ret = 1; } errout: - if (!ret) - sbi->extent_cache_misses++; - else - sbi->extent_cache_hits++; trace_ext4_ext_in_cache(inode, block, ret); spin_unlock(&EXT4_I(inode)->i_block_reservation_lock); return ret; |