Date: Tue, 27 Mar 2012 01:26:00 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r233530 - head/sys/powerpc/aim Message-ID: <201203270126.q2R1Q0DW058525@svn.freebsd.org>
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Author: nwhitehorn Date: Tue Mar 27 01:26:00 2012 New Revision: 233530 URL: http://svn.freebsd.org/changeset/base/233530 Log: Make sure to call vm_page_dirty() before the pmap lock is released to prevent a race where another process could conclude the page was clean. Submitted by: alc Modified: head/sys/powerpc/aim/mmu_oea64.c Modified: head/sys/powerpc/aim/mmu_oea64.c ============================================================================== --- head/sys/powerpc/aim/mmu_oea64.c Tue Mar 27 01:24:18 2012 (r233529) +++ head/sys/powerpc/aim/mmu_oea64.c Tue Mar 27 01:26:00 2012 (r233530) @@ -1582,11 +1582,11 @@ moea64_remove_write(mmu_t mmu, vm_page_t isync(); } } + if ((lo & LPTE_CHG) != 0) + vm_page_dirty(m); PMAP_UNLOCK(pmap); } UNLOCK_TABLE_RD(); - if ((lo & LPTE_CHG) != 0) - vm_page_dirty(m); vm_page_aflag_clear(m, PGA_WRITEABLE); }
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