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authorCyrill Gorcunov <gorcunov@gmail.com>2013-10-16 13:46:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-10-16 21:35:52 -0700
commitc3d16e16522fe3fe8759735850a0676da18f4b1d (patch)
tree430c8b815eff06ed9fbfeefa30695d622f65660b /README
parentd8e2162cf0bbc49bb3fe1ac689618f6629c9150b (diff)
downloadlinux-c3d16e16522fe3fe8759735850a0676da18f4b1d.tar.bz2
mm: migration: do not lose soft dirty bit if page is in migration state
If page migration is turned on in config and the page is migrating, we may lose the soft dirty bit. If fork and mprotect are called on migrating pages (once migration is complete) pages do not obtain the soft dirty bit in the correspond pte entries. Fix it adding an appropriate test on swap entries. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Pavel Emelyanov <xemul@parallels.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Matt Mackall <mpm@selenic.com> Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Peter Zijlstra <peterz@infradead.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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