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| author | Song Liu <songliubraving@fb.com> | 2019-09-23 15:37:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-09-24 15:54:11 -0700 |
| commit | 520e5ba415906373186bcd3c7cffa3535bfdbdde (patch) | |
| tree | a6d33c8c66bd3865245f93931484427dce1a0eb4 /mm | |
| parent | 31895438e702f48e25b7aa6d88f9c97c795c79c7 (diff) | |
| download | lwn-520e5ba415906373186bcd3c7cffa3535bfdbdde.tar.gz lwn-520e5ba415906373186bcd3c7cffa3535bfdbdde.zip | |
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.c | 2 |
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 |