linux-ext4 - [Bug 41682] INFO: possible circular locking dependency detected .. at ext4_evict

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Message-Id: <201108242122.p7OLM4iU004035@demeter1.kernel.org>
Date:	Wed, 24 Aug 2011 21:22:04 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 41682] INFO: possible circular locking dependency detected ..
 at ext4_evict_inode

https://bugzilla.kernel.org/show_bug.cgi?id=41682





--- Comment #2 from Witold Baryluk <baryluk@....if.uj.edu.pl>  2011-08-24 21:22:03 ---
This build is of mainline kernel, and already have this commit

commit c063d8a60fc912ae198f054608ad461a69dc9a19
Merge: 79058c4 dccaf33
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Sun Aug 21 06:59:41 2011 -0700

    Merge branch 'for_linus' of
git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

    * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
      ext4: flush any pending end_io requests before DIO reads w/dioread_nolock
      ext4: fix nomblk_io_submit option so it correctly converts uninit blocks
      ext4: Resolve the hang of direct i/o read in handling
EXT4_IO_END_UNWRITTEN.
      ext4: call ext4_ioend_wait and ext4_flush_completed_IO in
ext4_evict_inode
      ext4: Fix ext4_should_writeback_data() for no-journal mode


So, it includes

commit 2581fdc810889fdea97689cb62481201d579c796
Author: Jiaying Zhang <jiayingz@...gle.com>
Date:   Sat Aug 13 12:17:13 2011 -0400

    ext4: call ext4_ioend_wait and ext4_flush_completed_IO in ext4_evict_inode


which should actually remove deadlock.

So probably some other nasty bug was introduced, or my configuration is very
strange (and it is).

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