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Date:	Tue, 5 Aug 2008 09:47:23 -0400
From:	Theodore Tso <>
To:	"Aneesh Kumar K.V" <>
Subject: Re: Problem with delayed allocation

On Tue, Aug 05, 2008 at 06:51:33PM +0530, Aneesh Kumar K.V wrote:
> This should not be needed. I was trying to force the pages to writeback.
> generic_sync_sb_inodes actually move  the inode to s_dirty if the
> pages_skipped differ after a writeback. But the confusing part is we
> are not looking at s_dirty list again. We move s_dirty and s_more_io to s_io
> only once in queue_io

Yes, but ext4_da_writepages() gets called twice in the __fsync_super()
code path, right?  Once with wbc->sync_mode set to WB_SYNC_HOLD, and
once with wbc->sync_mode set to wbc->sync_mode set to WB_SYNC_ALL,
corresponding to sync_inodes_sb() getting called twice, once with
wait=0 and once with wait=1.

						- Ted
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