From: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp>
Date: Mon, 28 Apr 2008 09:12:08 +0000 (-0700)
Subject: fix invalidate_inode_pages2_range() to not clear ret
X-Git-Tag: v2.6.26-rc1~1005
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0dd1334faf7e075bfdb6f5284eed65210b296fc1;p=pandora-kernel.git

fix invalidate_inode_pages2_range() to not clear ret

DIO invalidates page cache through invalidate_inode_pages2_range().
invalidate_inode_pages2_range() sets ret=-EIO when
invalidate_complete_page2() fails, but this ret is cleared if
do_launder_page() succeed on a page of next index.

In this case, dio is carried out even if invalidate_complete_page2() fails
on some pages.

This can cause inconsistency between memory and blocks on HDD because the
page cache still exists.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Hisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Cc: Ken Chen <kenchen@google.com>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Chuck Lever <cel@citi.umich.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

Reading git-diff-tree failed