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authorDavid Teigland <teigland@redhat.com>2013-01-07 11:03:42 -0600
committerDavid Teigland <teigland@redhat.com>2013-01-07 12:02:49 -0600
commitf11722834605a155022a8098ad7d8adacf44b22f (patch)
tree9a2004fa6c4a925971c338db5af8f643a990f2d8 /fs/dlm/dlm_internal.h
parent2318aa272072f6906de8e00a332da1485506b3c5 (diff)
downloadlinux-f11722834605a155022a8098ad7d8adacf44b22f.tar.gz
linux-f11722834605a155022a8098ad7d8adacf44b22f.tar.xz
dlm: avoid scanning unchanged toss lists
Keep track of whether a toss list contains any shrinkable rsbs. If not, dlm_scand can avoid scanning the list for rsbs to shrink. Unnecessary scanning can otherwise waste a lot of time because the toss lists can contain a large number of rsbs that are non-shrinkable (directory records). Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm/dlm_internal.h')
-rw-r--r--fs/dlm/dlm_internal.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index 77c0f70f8fe8..e7665c31f7b1 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -96,10 +96,13 @@ do { \
}
+#define DLM_RTF_SHRINK 0x00000001
+
struct dlm_rsbtable {
struct rb_root keep;
struct rb_root toss;
spinlock_t lock;
+ uint32_t flags;
};