Messages in this thread Patch in this message | | | Date | Tue, 8 Jul 2014 23:21:51 +0400 | From | Cyrill Gorcunov <> | Subject | [PATCH] mm: Don't forget to set softdirty on file mapped fault |
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Otherwise we may not notice that pte was softdirty because pte_mksoft_dirty helper _returns_ new pte but not modifies argument.
CC: Pavel Emelyanov <xemul@parallels.com> CC: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> --- mm/memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6.git/mm/memory.c =================================================================== --- linux-2.6.git.orig/mm/memory.c +++ linux-2.6.git/mm/memory.c @@ -2744,7 +2744,7 @@ void do_set_pte(struct vm_area_struct *v if (write) entry = maybe_mkwrite(pte_mkdirty(entry), vma); else if (pte_file(*pte) && pte_file_soft_dirty(*pte)) - pte_mksoft_dirty(entry); + entry = pte_mksoft_dirty(entry); if (anon) { inc_mm_counter_fast(vma->vm_mm, MM_ANONPAGES); page_add_new_anon_rmap(page, vma, address);
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