Date: Sat, 1 Jun 2013 20:32:34 +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: r251229 - head/sys/vm Message-ID: <201306012032.r51KWYY9000708@svn.freebsd.org>
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Author: alc Date: Sat Jun 1 20:32:34 2013 New Revision: 251229 URL: http://svnweb.freebsd.org/changeset/base/251229 Log: Now that access to the page's "act_count" field is synchronized by the page lock instead of the object lock, there is no reason for vm_page_activate() to assert that the object is locked for either read or write access. (The "VPO_UNMANAGED" flag never changes after page allocation.) 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 Sat Jun 1 19:07:03 2013 (r251228) +++ head/sys/vm/vm_page.c Sat Jun 1 20:32:34 2013 (r251229) @@ -1837,7 +1837,6 @@ vm_page_activate(vm_page_t m) int queue; vm_page_lock_assert(m, MA_OWNED); - VM_OBJECT_ASSERT_WLOCKED(m->object); if ((queue = m->queue) != PQ_ACTIVE) { if (m->wire_count == 0 && (m->oflags & VPO_UNMANAGED) == 0) { if (m->act_count < ACT_INIT)
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