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authorBob Peterson <rpeterso@redhat.com>2015-06-12 13:15:54 -0500
committerBob Peterson <rpeterso@redhat.com>2015-06-18 12:17:59 -0500
commite7ccaf5fe1590667b3fa2f8df5c5ec9ba0dc5b85 (patch)
tree168c1f810fac94f8696fa491bee923e42d1677b7 /fs/gfs2/incore.h
parent86066914edff2316cbed63aac8a87d5001441a16 (diff)
GFS2: Don't add all glocks to the lru
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>
Diffstat (limited to 'fs/gfs2/incore.h')
-rw-r--r--fs/gfs2/incore.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 304a22315448..a1ec7c20e498 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -225,6 +225,7 @@ struct gfs2_glock_operations {
const unsigned long go_flags;
#define GLOF_ASPACE 1
#define GLOF_LVB 2
+#define GLOF_LRU 4
};
enum {