tree b7aae262a2e790bc736fa16534b3b2d7c9e51245
parent 552fca4cbe552520d85b21e839f289c880fa48d2
author akpm@osdl.org <akpm@osdl.org> 1114963119 -0700
committer Linus Torvalds <torvalds@ppc970.osdl.org> 1114963119 -0700

[PATCH] drop_buffers() oops fix

In rare situations, drop_buffers() can be called for a page which has buffers,
but no ->mapping (it was truncated, but the buffers were left behind because
ext3 was still fiddling with them).

But if there was an I/O error in a buffer_head, drop_buffers() will try to get
at the address_space and will oops.

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>