mm: remove page_file_index

After using the offset of the swap entry as the key of the swap cache,
the page_index() becomes exactly same as page_file_index().  So the
page_file_index() is removed and the callers are changed to use
page_index() instead.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: "Huang, Ying" <[email protected]>
Cc: Trond Myklebust <[email protected]>
Cc: Anna Schumaker <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Dan Williams <[email protected]>
Cc: Joonsoo Kim <[email protected]>
Cc: Ross Zwisler <[email protected]>
Cc: Eric Dumazet <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions