linux-kernel - [PATCH 0/3] writeback visibility

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Message-Id: <1276907415-504-1-git-send-email-mrubin@google.com>
Date:	Fri, 18 Jun 2010 17:30:12 -0700
From:	Michael Rubin <mrubin@...gle.com>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-mm@...ck.org
Cc:	jack@...e.cz, akpm@...ux-foundation.org, david@...morbit.com,
	hch@....de, axboe@...nel.dk, Michael Rubin <mrubin@...gle.com>
Subject: [PATCH 0/3] writeback visibility

Debugging writeback issues and tuning an application's writeback activity is
easier when the activity is visible.  With large clusters, classifying
and root causing writeback problems has been a big headache. This patch
series contains a series of patches that our team has been using to start
getting a handle on writeback behaviour. These changes should be helpful
for single system maintainers also. It's still a big headache.

Once these changes are reviewed I will make sure the Documentation files
are updated, but I expect some back and forth first.

Michael Rubin (3):
  writeback: Creating /sys/kernel/mm/writeback/writeback
  writeback: per bdi monitoring
  writeback: tracking subsystems causing writeback

 drivers/base/node.c         |   14 +++++
 fs/buffer.c                 |    2 +-
 fs/fs-writeback.c           |   28 +++++++--
 fs/nilfs2/segment.c         |    4 +-
 fs/sync.c                   |    2 +-
 include/linux/backing-dev.h |    9 +++
 include/linux/mmzone.h      |    2 +
 include/linux/writeback.h   |   50 +++++++++++++++-
 mm/backing-dev.c            |  137 ++++++++++++++++++++++---------------------
 mm/mm_init.c                |  122 ++++++++++++++++++++++++++++++++++++++
 mm/page-writeback.c         |   18 ++++--
 mm/vmscan.c                 |    3 +-
 mm/vmstat.c                 |    2 +
 13 files changed, 311 insertions(+), 82 deletions(-)

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