[PATCH v2 04/20] mm, hugetlb: remove useless check about mapping type
From: Joonsoo Kim <hidden>
Date: 2013-08-09 09:32:30
Also in:
lkml
Subsystem:
hugetlb subsystem, memory management, the rest · Maintainers:
Muchun Song, Oscar Salvador, Andrew Morton, Linus Torvalds
is_vma_resv_set(vma, HPAGE_RESV_OWNER) implys that this mapping is for private. So we don't need to check whether this mapping is for shared or not. This patch is just for clean-up. Signed-off-by: Joonsoo Kim <redacted>
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index ea1ae0a..c017c52 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c@@ -2544,8 +2544,7 @@ retry_avoidcopy: * at the time of fork() could consume its reserves on COW instead * of the full address range. */ - if (!(vma->vm_flags & VM_MAYSHARE) && - is_vma_resv_set(vma, HPAGE_RESV_OWNER) && + if (is_vma_resv_set(vma, HPAGE_RESV_OWNER) && old_page != pagecache_page) outside_reserve = 1;
--
1.7.9.5
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