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authorDavid Teigland <teigland@redhat.com>2013-01-07 18:03:42 +0100
committerDavid Teigland <teigland@redhat.com>2013-01-07 19:02:49 +0100
commitf11722834605a155022a8098ad7d8adacf44b22f (patch)
tree9a2004fa6c4a925971c338db5af8f643a990f2d8 /fs/dlm/dlm_internal.h
parentMerge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeu... (diff)
downloadlinux-f11722834605a155022a8098ad7d8adacf44b22f.tar.xz
linux-f11722834605a155022a8098ad7d8adacf44b22f.zip
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;
};