From: Kazuya Mio <k-mio@sx.jp.nec.com>
Date: Thu, 20 Oct 2011 23:23:08 +0000 (-0400)
Subject: ext4: fix the deadlock in mpage_da_map_and_submit()
X-Git-Tag: v3.2-rc1~85^2~40
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8de49e674a1133ab8998914a6e933ceb4b5f4b07;p=pandora-kernel.git

ext4: fix the deadlock in mpage_da_map_and_submit()

If ext4_jbd2_file_inode() in mpage_da_map_and_submit() fails due to
journal abort, this function returns to caller without unlocking the
page.  It leads to the deadlock, and the patch fixes this issue by
calling mpage_da_submit_io().

Signed-off-by: Kazuya Mio <k-mio@sx.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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