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| author | David Teigland <teigland@redhat.com> | 2013-01-07 11:03:42 -0600 |
|---|---|---|
| committer | David Teigland <teigland@redhat.com> | 2013-01-07 12:02:49 -0600 |
| commit | f11722834605a155022a8098ad7d8adacf44b22f (patch) | |
| tree | 9a2004fa6c4a925971c338db5af8f643a990f2d8 /fs/dlm/dlm_internal.h | |
| parent | 2318aa272072f6906de8e00a332da1485506b3c5 (diff) | |
| download | linux-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.h | 3 |
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; }; |