linux-kernel - [PATCH 0/4] Post merge per-bdi writeback patches

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Message-Id: <1252669832-13553-1-git-send-email-jens.axboe@oracle.com>
Date:	Fri, 11 Sep 2009 13:50:28 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Cc:	chris.mason@...cle.com, hch@...radead.org, tytso@....edu,
	akpm@...ux-foundation.org, jack@...e.cz, trond.myklebust@....uio.no
Subject: [PATCH 0/4] Post merge per-bdi writeback patches

Hi,

This is what I currently have queued up for post merge of the
writeback patchset. It contains:

- The bdi work allocation and queue cleanup from Christoph.
- An sb->s_bdi pointer that gets assigned in get_sb_bdev(), OR
  from the fs ->fill_super() if the file system doesn't use
  get_sb_bdev(). It is required for WB_SYNC_ALL writeback. Someone
  more familiar with this code should check that it is done in the
  right place. As usual, I'm unsure of NFS...
- Once the ->s_bdi is in place, we can get rid of bdi_writeback_all()
  for WB_SYNC_ALL. WB_SYNC_ALL now has to use bdi_start_writeback().
  This cleans up bdi_writeback_all() nicely.
- With bdi_writeback_all() only doing WB_SYNC_NONE, we can drop
  the bdi_lock requirement and move to RCU for bdi_list.

Please take a good look and review/comment, thanks! This patchset
is based on top of writeback-v20. It boots and works fine for me.

 fs/btrfs/disk-io.c          |    1 
 fs/fs-writeback.c           |  111 ++++++++----------------------------
 fs/fuse/inode.c             |    2 
 fs/super.c                  |    6 +
 fs/sync.c                   |    9 ++
 fs/ubifs/super.c            |    1 
 include/linux/backing-dev.h |    1 
 include/linux/fs.h          |    1 
 mm/backing-dev.c            |   76 +++++++++++++++++-------
 mm/page-writeback.c         |    8 +-
 10 files changed, 105 insertions(+), 111 deletions(-)

-- 
Jens Axboe

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