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| author | Christoph Hellwig <hch@lst.de> | 2017-10-24 03:31:50 +0200 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2017-10-24 03:31:50 +0200 |
| commit | 942491c9e6d631c012f3c4ea8e7777b0b02edeab (patch) | |
| tree | b316042eb963aaede79c0ce3aa1ac8772a38f4db /kernel/smp.c | |
| parent | xfs: move two more RT specific functions into CONFIG_XFS_RT (diff) | |
| download | linux-942491c9e6d631c012f3c4ea8e7777b0b02edeab.tar.xz linux-942491c9e6d631c012f3c4ea8e7777b0b02edeab.zip | |
xfs: fix AIM7 regression
Apparently our current rwsem code doesn't like doing the trylock, then
lock for real scheme. So change our read/write methods to just do the
trylock for the RWF_NOWAIT case. This fixes a ~25% regression in
AIM7.
Fixes: 91f9943e ("fs: support RWF_NOWAIT for buffered reads")
Reported-by: kernel test robot <xiaolong.ye@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'kernel/smp.c')
0 files changed, 0 insertions, 0 deletions