diff mbox series

[v10,3/7] filemap: update offset check in filemap_fault()

Message ID 20190801184244.3169074-4-songliubraving@fb.com (mailing list archive)
State New, archived
Headers show
Series Enable THP for text section of non-shmem files | expand

Commit Message

Song Liu Aug. 1, 2019, 6:42 p.m. UTC 
With THP, current check of offset:

    VM_BUG_ON_PAGE(page->index != offset, page);

is no longer accurate. Update it to:

    VM_BUG_ON_PAGE(page_to_pgoff(page) != offset, page);

Acked-by: Rik van Riel <riel@surriel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Song Liu <songliubraving@fb.com>
---
 mm/filemap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/mm/filemap.c b/mm/filemap.c
index aaee1ef96f6d..97c7b7b92c20 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2542,7 +2542,7 @@  vm_fault_t filemap_fault(struct vm_fault *vmf)
 		put_page(page);
 		goto retry_find;
 	}
-	VM_BUG_ON_PAGE(page->index != offset, page);
+	VM_BUG_ON_PAGE(page_to_pgoff(page) != offset, page);
 
 	/*
 	 * We have a locked page in the page cache, now we need to check