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Message-Id: <1331232840-16044-1-git-send-email-tj@kernel.org>
Date: Thu, 8 Mar 2012 10:53:55 -0800
From: Tejun Heo <tj@...nel.org>
To: axboe@...nel.dk, vgoyal@...hat.com
Cc: akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
dpshah@...gle.com, ctalbott@...gle.com, rni@...gle.com
Subject: [PATCHSET] blkcg: fix percpu stat allocation and remove stats_lock, take#2
Hello, guys.
This patchset is another retry at fixing percpu stat allocation and
removing stats_lock. From the last try[L], percpu mempool stuff is
replaced with in-blkcg delayed allocation using work item. Other than
that, the rest of the patchset remain the same.
Vivek, I made some minor adjustments to your percpu alloc patch.
Also, your patch fixes the suspicious RCU deref warning, which was
caused by blkg_alloc() needing sleepable context from the first place.
I added a note for that in the commit message.
0001-blkcg-alloc-per-cpu-stats-from-worker-thread-in-a-de.patch
0002-blkcg-don-t-use-percpu-for-merged-stats.patch
0003-blkcg-simplify-stat-reset.patch
0004-blkcg-restructure-blkio_get_stat.patch
0005-blkcg-remove-blkio_group-stats_lock.patch
0001 fix blkcg per cpu stat allocation by implementing delayed
allocation in blkcg proper using a work item.
0002-0005 replace blkg->stats_lock with u64_stats_sync.
This patchset is on top of the current block/for-3.4/core - 671058fb2a
"block: make blk-throttle preserve the issuing task on delayed bios".
and available in the following git branch.
git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git blkcg-stats
Thanks.
block/blk-cgroup.c | 466 ++++++++++++++++++++++++++---------------------------
block/blk-cgroup.h | 31 ++-
2 files changed, 257 insertions(+), 240 deletions(-)
--
tejun
[L] http://thread.gmane.org/gmane.linux.kernel/1257428
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