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| author | attilio <attilio@FreeBSD.org> | 2013-03-04 12:33:40 +0000 |
|---|---|---|
| committer | attilio <attilio@FreeBSD.org> | 2013-03-04 12:33:40 +0000 |
| commit | 709ad55889c4199b88fe7dee69c38a54ead05501 (patch) | |
| tree | f8a5d36c4920e2c30960c0b035bd028d000d5c75 /sys/vm/vm_page.c | |
| parent | a8671df14b60140e0af340fa7814b371a0c6096f (diff) | |
| download | FreeBSD-src-709ad55889c4199b88fe7dee69c38a54ead05501.zip FreeBSD-src-709ad55889c4199b88fe7dee69c38a54ead05501.tar.gz | |
Evaluations on the likelyhood of empty object cache cannot be made in
general way but must be evaluated case by case.
Embedd the decision in the caller themselves rather than in a
general purpose KPI.
Sponsored by: EMC / Isilon storage division
Reported by: alc
Reviewed by: alc
Diffstat (limited to 'sys/vm/vm_page.c')
| -rw-r--r-- | sys/vm/vm_page.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/sys/vm/vm_page.c b/sys/vm/vm_page.c index b5cf980..47ffc31 100644 --- a/sys/vm/vm_page.c +++ b/sys/vm/vm_page.c @@ -1017,7 +1017,7 @@ vm_page_cache_free(vm_object_t object, vm_pindex_t start, vm_pindex_t end) boolean_t empty; mtx_lock(&vm_page_queue_free_mtx); - if (vm_object_cache_is_empty(object)) { + if (__predict_false(vm_object_cache_is_empty(object))) { mtx_unlock(&vm_page_queue_free_mtx); return; } @@ -1136,7 +1136,7 @@ vm_page_is_cached(vm_object_t object, vm_pindex_t pindex) * exist. */ VM_OBJECT_LOCK_ASSERT(object, MA_OWNED); - if (vm_object_cache_is_empty(object)) + if (__predict_true(vm_object_cache_is_empty(object))) return (FALSE); mtx_lock(&vm_page_queue_free_mtx); m = vm_page_cache_lookup(object, pindex); |
