GFS2: Don't add all glocks to the lru

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The glocks used for resource groups often come and go hundreds of
thousands of times per second. Adding them to the lru list just
adds unnecessary contention for the lru_lock spin_lock, especially
considering we're almost certainly going to re-use the glock and
take it back off the lru microseconds later. We never want the
glock shrinker to cull them anyway. This patch adds a new bit in
the glops that determines which glock types get put onto the lru
list and which ones don't.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Acked-by: Steven Whitehouse <swhiteho@redhat.com>

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This commit is contained in:

Bob Peterson 2015-06-12 13:15:54 -05:00

parent 86066914ed

commit e7ccaf5fe1

3 changed files with 7 additions and 3 deletions

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3

fs/gfs2/glock.c

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6

fs/gfs2/glops.c

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1

fs/gfs2/incore.h

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