Commit 520e5ba4 authored by Song Liu's avatar Song Liu Committed by Linus Torvalds

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.comSigned-off-by: default avatarSong Liu <songliubraving@fb.com>
Acked-by: default avatarRik van Riel <riel@surriel.com>
Acked-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: default avatarJohannes 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 31895438
...@@ -2545,7 +2545,7 @@ vm_fault_t filemap_fault(struct vm_fault *vmf) ...@@ -2545,7 +2545,7 @@ vm_fault_t filemap_fault(struct vm_fault *vmf)
put_page(page); put_page(page);
goto retry_find; 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 * We have a locked page in the page cache, now we need to check
......
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