Date: Fri, 17 May 2013 18:49:43 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r250745 - head/sys/vm Message-ID: <201305171849.r4HInhUR072528@svn.freebsd.org>
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Author: alc Date: Fri May 17 18:49:43 2013 New Revision: 250745 URL: http://svnweb.freebsd.org/changeset/base/250745 Log: Relax the object locking assertion in vm_page_lookup(). Now that a radix tree is used to maintain the object's collection of resident pages, vm_page_lookup() no longer needs an exclusive lock. Reviewed by: attilio Sponsored by: EMC / Isilon Storage Division Modified: head/sys/vm/vm_page.c Modified: head/sys/vm/vm_page.c ============================================================================== --- head/sys/vm/vm_page.c Fri May 17 17:45:00 2013 (r250744) +++ head/sys/vm/vm_page.c Fri May 17 18:49:43 2013 (r250745) @@ -942,7 +942,7 @@ vm_page_t vm_page_lookup(vm_object_t object, vm_pindex_t pindex) { - VM_OBJECT_ASSERT_WLOCKED(object); + VM_OBJECT_ASSERT_LOCKED(object); return (vm_radix_lookup(&object->rtree, pindex)); }
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