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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2012-12-12 22:50:57 +0100
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-13 02:38:31 +0100
commitcad7f613c4d010e1d0f05c9a4fb33c7ae40ba115 (patch)
tree9d3f13bfbec1215e2427bb1ef74d8471d4e0b995 /mm/memory.c
parentthp: do_huge_pmd_wp_page(): handle huge zero page (diff)
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thp: change_huge_pmd(): make sure we don't try to make a page writable
mprotect core never tries to make page writable using change_huge_pmd(). Let's add an assert that the assumption is true. It's important to be sure we will not make huge zero page writable. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: "H. Peter Anvin" <hpa@linux.intel.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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