Commit 369a713e authored by Hillf Danton's avatar Hillf Danton Committed by Linus Torvalds
Browse files

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 36e4f20a

 ("hugetlb: do not use vma_hugecache_offset()
for vma_prio_tree_foreach").
Signed-off-by: default avatarHillf Danton <dhillf@gmail.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Michel Lespinasse <walken@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 8375ad98
......@@ -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);
......
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