Author: attilio
Date: Sat Jun 16 21:39:00 2012
New Revision: 237172
URL: http://svn.freebsd.org/changeset/base/237172
Log:
Do a more targeted check on the page cache and avoid to check the cache
pointer directly in vnode_pager_setsize() by using newly introduced
vm_page_is_cached() function.
Reviewed by: alc
MFC after: 2 weeks
X-MFC: r234039,234064
Modified:
head/sys/vm/vnode_pager.c
Modified: head/sys/vm/vnode_pager.c
==============================================================================
--- head/sys/vm/vnode_pager.c Sat Jun 16 21:37:15 2012 (r237171)
+++ head/sys/vm/vnode_pager.c Sat Jun 16 21:39:00 2012 (r237172)
@@ -440,7 +440,7 @@ vnode_pager_setsize(vp, nsize)
*/
vm_page_clear_dirty(m, base, PAGE_SIZE - base);
} else if ((nsize & PAGE_MASK) &&
- __predict_false(object->cache != NULL)) {
+ vm_page_is_cached(object, OFF_TO_IDX(nsize))) {
vm_page_cache_free(object, OFF_TO_IDX(nsize),
nobjsize);
}
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