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| author | Hillf Danton <dhillf@gmail.com> | 2013-04-30 02:06:14 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-30 02:54:28 +0400 |
| commit | 369a713e9678227e203b53931ad1a10cd8eac811 (patch) | |
| tree | dfb1903567ad4fe10c297167f3b1345e64e1e4cd /mm/rmap.c | |
| parent | 8375ad98cc1defc36adf4a77d9ea1e71db51a371 (diff) | |
| download | linux-369a713e9678227e203b53931ad1a10cd8eac811.tar.xz | |
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.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c index 807c96bf0dc6..6280da86b5d6 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); |