Re: [PATCH] writeback: reset inode dirty time when adding it backto empty s_dirty list

[hch@xxxxxxxxxxxxx]

On Wed, Mar 25, 2009 at 08:17:43PM +0800, Wu Fengguang wrote:
> Now there are now two possible solutions:
> - unconditionally update dirtied_when in redirty_tail();
> - keep dirtied_when and redirty inodes to a new dedicated queue.
> The first one involves less code, the second one allows more flexible timing.
> 
> NFS/XFS could be a good starting point for discussing the
> requirements, so that we can reach a suitable solution.

Note that the XFS requirement also applies to all filesystems that
perform some sort of metadata updats on I/O completeion.  That includes
at least ext4, btrfs and most likely the cluster filesystems too.
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