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| author | Bob Peterson <rpeterso@redhat.com> | 2017-07-26 10:57:35 -0500 |
|---|---|---|
| committer | Bob Peterson <rpeterso@redhat.com> | 2017-08-09 09:36:39 -0500 |
| commit | 645ebd49f0583f91234aa043ef71ddebe7e8351e (patch) | |
| tree | d9c6acfb9b5f38574a8ed924c1a1eccf8de5e2cf /fs/gfs2/sys.c | |
| parent | 2d821a8b7192ed9d2ea0c30f3cb62b58aa46cf41 (diff) | |
| download | linux-645ebd49f0583f91234aa043ef71ddebe7e8351e.tar.bz2 | |
GFS2: Don't waste time locking lru_lock for non-lru glocks
Before this patch, glock_dq would call gfs2_glock_remove_from_lru.
For glocks that are never put on the LRU, such as the transaction
glock, this just takes the spin_lock, determines there's nothing to
be done because the list is empty, then unlocks again. This was
causing unnecessary lock contention on the lru_lock spin_lock.
This patch adds a check for GLOF_LRU in the glops before taking
the spin_lock.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2/sys.c')
0 files changed, 0 insertions, 0 deletions