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authorHillf Danton <dhillf@gmail.com>2013-04-29 15:06:14 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 15:54:28 -0700
commit369a713e9678227e203b53931ad1a10cd8eac811 (patch)
treedfb1903567ad4fe10c297167f3b1345e64e1e4cd /mm/rmap.c
parent8375ad98cc1defc36adf4a77d9ea1e71db51a371 (diff)
rmap: recompute pgoff for unmapping huge page
We have to recompute pgoff if the given page is huge, since result based on HPAGE_SIZE is not approapriate for scanning the vma interval tree, as shown by commit 36e4f20af833 ("hugetlb: do not use vma_hugecache_offset() for vma_prio_tree_foreach"). Signed-off-by: Hillf Danton <dhillf@gmail.com> Cc: Michal Hocko <mhocko@suse.cz> Cc: Michel Lespinasse <walken@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rmap.c')
-rw-r--r--mm/rmap.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 807c96bf0dc..6280da86b5d 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1513,6 +1513,9 @@ static int try_to_unmap_file(struct page *page, enum ttu_flags flags)
unsigned long max_nl_size = 0;
unsigned int mapcount;
+ if (PageHuge(page))
+ pgoff = page->index << compound_order(page);
+
mutex_lock(&mapping->i_mmap_mutex);
vma_interval_tree_foreach(vma, &mapping->i_mmap, pgoff, pgoff) {
unsigned long address = vma_address(page, vma);