From: Dmitry Monakhov <dmonakhov@openvz.org>
Date: Sat, 29 Sep 2012 04:41:21 +0000 (-0400)
Subject: ext4: serialize dio nonlocked reads with defrag workers
X-Git-Tag: v3.7-rc1~91^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=17335dcc471199717839b2fa3492ca36f70f1168;p=pandora-kernel.git

ext4: serialize dio nonlocked reads with defrag workers

Inode's block defrag and ext4_change_inode_journal_flag() may
affect nonlocked DIO reads result, so proper synchronization
required.

- Add missed inode_dio_wait() calls where appropriate
- Check inode state under extra i_dio_count reference.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---

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