Date: Wed, 28 Apr 2010 06:34:47 +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: r207308 - head/sys/vm Message-ID: <201004280634.o3S6YlpJ048158@svn.freebsd.org>
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Author: alc Date: Wed Apr 28 06:34:47 2010 New Revision: 207308 URL: http://svn.freebsd.org/changeset/base/207308 Log: Setting PG_REFERENCED on a page at the end of vm_fault() is redundant since the page table entry's accessed bit is either preset by the immediately preceding call to pmap_enter() or by hardware (or software) upon return from vm_fault() when the faulting access is restarted. Modified: head/sys/vm/vm_fault.c Modified: head/sys/vm/vm_fault.c ============================================================================== --- head/sys/vm/vm_fault.c Wed Apr 28 05:33:59 2010 (r207307) +++ head/sys/vm/vm_fault.c Wed Apr 28 06:34:47 2010 (r207308) @@ -924,7 +924,6 @@ vnode_locked: vm_fault_prefault(fs.map->pmap, vaddr, fs.entry); VM_OBJECT_LOCK(fs.object); vm_page_lock_queues(); - vm_page_flag_set(fs.m, PG_REFERENCED); /* * If the page is not wired down, then put it where the pageout daemon
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