linux-kernel - Re: lift the xfs writepage code into iomap v8

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Message-ID: <20191017204909.GO13108@magnolia>
Date:   Thu, 17 Oct 2019 13:49:09 -0700
From:   "Darrick J. Wong" <darrick.wong@...cle.com>
To:     Christoph Hellwig <hch@....de>
Cc:     Damien Le Moal <Damien.LeMoal@....com>,
        Andreas Gruenbacher <agruenba@...hat.com>,
        linux-xfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: lift the xfs writepage code into iomap v8

On Thu, Oct 17, 2019 at 07:56:10PM +0200, Christoph Hellwig wrote:
> Hi Darrick,
> 
> this series cleans up the xfs writepage code and then lifts it to
> fs/iomap/ so that it could be use by other file system.
> 
> Note: the submit_ioend hook has not been renamed.  Feel free to
> rename it if you really dislike the name.

Heh, ok.  ->prepare_ioend it is.

Is a v3 of "iomap and xfs COW cleanups" coming soon?

--D

> 
> Changes since v7:
>  - fix various commit log typos
>  - fix up various comments
>  - move some of the iomap tracepoint additions to an earlier patch
>  - rebased on top of "iomap: iomap that extends beyond EOF should be
>    marked dirty"
> 
> Changes since v6:
>  - actually add trace.c to the patch
>  - move back to the old order that massages XFS into shape and then
>    lifts the code to iomap
>  - cleanup iomap_ioend_compare
>  - cleanup the add_to_ioend checks
> 
> Changes since v5:
>  - move the tracing code to fs/iomap/trace.[ch]
>  - fix a bisection issue with the tracing code
>  - add an assert that xfs_end_io now only gets "complicated" completions
>  - better document the iomap_writeback_ops methods in iomap.h
> 
> Changes since v4:
>  - rebased on top 5.4-rc1
>  - drop the addition of list_pop / list_pop_entry
>  - re-split a few patches to better fit Darricks scheme of keeping the
>    iomap additions separate from the XFS switchover
> 
> Changes since v3:
>  - re-split the pages to add new code to iomap and then switch xfs to
>    it later (Darrick)
> 
> Changes since v2:
>  - rebased to v5.3-rc1
>  - folded in a few changes from the gfs2 enablement series
> 
> Changes since v1:
>  - rebased to the latest xfs for-next tree
>  - keep the preallocated transactions for size updates
>  - rename list_pop to list_pop_entry and related cleanups
>  - better document the nofs context handling
>  - document that the iomap tracepoints are not a stable API