tree a2bf745efaa4092f2a8d7d9a9b160c2a7a3b303f
parent 0aded708d125a3ff7e5abaea9c2d9c6d7ebbfdcd
author Linus Torvalds <torvalds@linux-foundation.org> 1291228519 -0500
committer Trond Myklebust <Trond.Myklebust@netapp.com> 1291301721 -0500

Call the filesystem back whenever a page is removed from the page cache

NFS needs to be able to release objects that are stored in the page
cache once the page itself is no longer visible from the page cache.

This patch adds a callback to the address space operations that allows
filesystems to perform page cleanups once the page has been removed
from the page cache.

Original patch by: Linus Torvalds <torvalds@linux-foundation.org>
[trondmy: cover the cases of invalidate_inode_pages2() and
          truncate_inode_pages()]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>