Messages in this thread Patch in this message | | | Date | Mon, 4 Mar 2013 20:47:31 +0800 | Subject | [PATCH resend] rmap: recompute pgoff for unmapping huge page | From | Hillf Danton <> |
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[Resend due to error in delivering to linux-kernel@vger.kernel.org, caused probably by the rich format provided by the mail agent by default.]
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> ---
--- a/mm/rmap.c Mon Mar 4 20:00:00 2013 +++ b/mm/rmap.c Mon Mar 4 20:02:16 2013 @@ -1513,6 +1513,9 @@ static int try_to_unmap_file(struct page 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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