[PATCH] Make address_space_operations->invalidatepage return void

The return value of this function is never used, so let's be honest and
declare it as void.

Some places where invalidatepage returned 0, I have inserted comments
suggesting a BUG_ON.

[[email protected]: JBD BUG fix]
[[email protected]: rework for git-nfs]
[[email protected]: don't go BUG in block_invalidate_page()]
Signed-off-by: Neil Brown <[email protected]>
Acked-by: Dave Kleikamp <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
11 files changed