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authorSong Liu <songliubraving@fb.com>2019-09-24 01:37:50 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-25 01:54:11 +0300
commit520e5ba415906373186bcd3c7cffa3535bfdbdde (patch)
treea6d33c8c66bd3865245f93931484427dce1a0eb4 /mm
parent31895438e702f48e25b7aa6d88f9c97c795c79c7 (diff)
downloadlinux-520e5ba415906373186bcd3c7cffa3535bfdbdde.tar.xz
filemap: update offset check in filemap_fault()
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); Link: http://lkml.kernel.org/r/20190801184244.3169074-4-songliubraving@fb.com Signed-off-by: Song Liu <songliubraving@fb.com> 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> Cc: Hillf Danton <hdanton@sina.com> Cc: Hugh Dickins <hughd@google.com> Cc: William Kucharski <william.kucharski@oracle.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
-rw-r--r--mm/filemap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 0b301103ea80..f4d2971abd7c 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2545,7 +2545,7 @@ retry_find:
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