diff options
| author | Jinshan Xiong <jinshan.xiong@intel.com> | 2016-11-02 21:24:55 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-07 11:36:46 +0100 |
| commit | a763e916d81e275176302684628738fd917b55da (patch) | |
| tree | abf67daf6e2b6276dc149ccd09220bad13902e8d /drivers/staging/lustre/lustre/llite/rw.c | |
| parent | 2d8c919e59df6a576d2c81fedc36d69dc7394645 (diff) | |
| download | op-kernel-dev-a763e916d81e275176302684628738fd917b55da.zip op-kernel-dev-a763e916d81e275176302684628738fd917b55da.tar.gz | |
staging/lustre: Get rid of cl_env hash table
cl_env hash table is under heavy contention when there are lots of
processes doing IO at the same time;
reduce lock contention by replacing cl_env cache with percpu array;
remove cl_env_nested_get() and cl_env_nested_put();
remove cl_env_reenter() and cl_env_reexit();
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-on: http://review.whamcloud.com/20254
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4257
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/lustre/lustre/llite/rw.c')
| -rw-r--r-- | drivers/staging/lustre/lustre/llite/rw.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/staging/lustre/lustre/llite/rw.c b/drivers/staging/lustre/lustre/llite/rw.c index 80cb8e0..d2515a8 100644 --- a/drivers/staging/lustre/lustre/llite/rw.c +++ b/drivers/staging/lustre/lustre/llite/rw.c @@ -896,17 +896,17 @@ int ll_writepage(struct page *vmpage, struct writeback_control *wbc) struct cl_io *io; struct cl_page *page; struct cl_object *clob; - struct cl_env_nest nest; bool redirtied = false; bool unlocked = false; int result; + int refcheck; LASSERT(PageLocked(vmpage)); LASSERT(!PageWriteback(vmpage)); LASSERT(ll_i2dtexp(inode)); - env = cl_env_nested_get(&nest); + env = cl_env_get(&refcheck); if (IS_ERR(env)) { result = PTR_ERR(env); goto out; @@ -971,7 +971,7 @@ int ll_writepage(struct page *vmpage, struct writeback_control *wbc) } } - cl_env_nested_put(&nest, env); + cl_env_put(env, &refcheck); goto out; out: |
