kernel_samsung_sm7125

jenna

History

Cyrill Gorcunov d9104d1ca9 mm: track vma changes with VM_SOFTDIRTY bit Pavel reported that in case if vma area get unmapped and then mapped (or expanded) in-place, the soft dirty tracker won't be able to recognize this situation since it works on pte level and ptes are get zapped on unmap, loosing soft dirty bit of course. So to resolve this situation we need to track actions on vma level, there VM_SOFTDIRTY flag comes in. When new vma area created (or old expanded) we set this bit, and keep it here until application calls for clearing soft dirty bit. Thus when user space application track memory changes now it can detect if vma area is renewed. Reported-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> 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: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		12 years ago
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.gitignore	…
00-INDEX	…
active_mm.txt	…
balance	…
cleancache.txt	…
frontswap.txt	…
highmem.txt	…
hugetlbpage.txt	hugepage: mention libhugetlbfs in doc	12 years ago
hwpoison.txt	…
ksm.txt	ksm: add some comments	12 years ago
locking	…
numa	…
numa_memory_policy.txt	…
overcommit-accounting	mm: limit growth of 3% hardcoded other user reserve	12 years ago
page_migration	…
pagemap.txt	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	12 years ago
slub.txt	…
soft-dirty.txt	mm: track vma changes with VM_SOFTDIRTY bit	12 years ago
transhuge.txt	mm/thp: fix doc for transparent huge zero page	12 years ago
unevictable-lru.txt	…
zswap.txt	zswap: add documentation	12 years ago