On Fri, Mar 09, 2012 at 10:02:24AM +0100, Jan Kara wrote:

  Hi,

  this patch set changes writeback_sb_inodes() to avoid iput() which might
be problematic (see patch 4 which tries to summarize our email discussions)
for some filesystems.

  Patches 1 and 2 are trivial mostly unrelated fixes (Fengguang, can you can
take these and merge them right away please?).

Sure, they have been tested in linux-next for some days.

Patch 3 is a preparatory code
reshuffle and patch 4 removes the __iget() / iput() from flusher thread.

These are pretty sane changes towards the right direction (in despite
of the complexities involved).

  As a side note, your patches to offload writeback from kswapd to flusher
thread then won't need iget/iput either if we pass page references as we talked
so that should resolve most of the concerns.

  What do you think guys?

I appreciate the work a lot. Thank you for removing the major problem
with the patches on pageout writeback work :-)

Regards,
Fengguang

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