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Date: Wed, 26 May 2010 16:44:45 GMT
From: bugzilla-daemon@...zilla.kernel.org
To: linux-ext4@...r.kernel.org
Subject: [Bug 15906] performance regression in "umount" of filesystems using
barriers
https://bugzilla.kernel.org/show_bug.cgi?id=15906
Brian Bloniarz <phunge0@...mail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |phunge0@...mail.com
--- Comment #30 from Brian Bloniarz <phunge0@...mail.com> 2010-05-26 16:44:37 ---
I'm trying to get these fixes merged into the ubuntu release, because ubuntu's
workaround has issues. The downstream bug for this is
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/585092
I backported to ubuntu's kernel, which took a little fixup. You'll find the
patches attached on that bug.
0001-writeback-fix-WB_SYNC_NONE-writeback-from-umount.patch
0002-writeback-Update-dirty-flags-in-two-steps.patch
0003-writeback-ensure-that-WB_SYNC_NONE-writeback-with-sb.patch
If anyone who's familiar with these code paths could review my backports, I'd
appreciate it. They apply cleanly to mainline v2.6.32.11, which is the base
for ubuntu's kernel.
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