From: Christoph Hellwig <hch@lst.de>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>,
Damien Le Moal <Damien.LeMoal@wdc.com>,
Andreas Gruenbacher <agruenba@redhat.com>,
linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 04/12] xfs: initialize ioma->flags in xfs_bmbt_to_iomap
Date: Tue, 25 Jun 2019 17:21:20 +0200 [thread overview]
Message-ID: <20190625152120.GA8153@lst.de> (raw)
In-Reply-To: <20190625151357.GA2230847@magnolia>
On Tue, Jun 25, 2019 at 08:13:57AM -0700, Darrick J. Wong wrote:
> > This doesn't affect any existing user as they all get a zeroed iomap
> > passed from the caller in iomap.c. It affects the writeback code
> > once it uses struct iomap as it overwrites a previously used iomap.
>
> Then shouldn't this new writeback code zero the iomap before calling
> back into the filesystem, just to maintain consistent behavior?
The core code doesn't decide when to overwrite it, that ->map_blocks
method does that based on a few factors (including the data_seq/cow_seq
counters that are entirely inside xfs).
next prev parent reply other threads:[~2019-06-25 15:21 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-24 5:52 lift the xfs writepage code into iomap Christoph Hellwig
2019-06-24 5:52 ` [PATCH 01/12] list.h: add a list_pop helper Christoph Hellwig
2019-06-24 14:53 ` Darrick J. Wong
2019-06-24 15:51 ` Matthew Wilcox
2019-06-25 10:06 ` Christoph Hellwig
2019-06-24 5:52 ` [PATCH 02/12] xfs: simplify xfs_chain_bio Christoph Hellwig
2019-06-24 15:14 ` Darrick J. Wong
2019-06-24 5:52 ` [PATCH 03/12] xfs: fix a comment typo in xfs_submit_ioend Christoph Hellwig
2019-06-24 14:53 ` Darrick J. Wong
2019-06-24 5:52 ` [PATCH 04/12] xfs: initialize ioma->flags in xfs_bmbt_to_iomap Christoph Hellwig
2019-06-24 14:57 ` Darrick J. Wong
2019-06-25 10:07 ` Christoph Hellwig
2019-06-25 15:13 ` Darrick J. Wong
2019-06-25 15:21 ` Christoph Hellwig [this message]
2019-06-24 5:52 ` [PATCH 05/12] xfs: use a struct iomap in xfs_writepage_ctx Christoph Hellwig
2019-06-24 15:50 ` Darrick J. Wong
2019-06-24 5:52 ` [PATCH 06/12] xfs: remove XFS_TRANS_NOFS Christoph Hellwig
2019-06-24 15:58 ` Darrick J. Wong
2019-06-24 22:59 ` Dave Chinner
2019-06-25 10:12 ` Christoph Hellwig
2019-06-24 5:52 ` [PATCH 07/12] xfs: don't preallocate a transaction for file size updates Christoph Hellwig
2019-06-24 16:17 ` Darrick J. Wong
2019-06-24 23:15 ` Dave Chinner
2019-06-25 10:25 ` Christoph Hellwig
2019-06-27 22:23 ` Dave Chinner
2019-06-24 5:52 ` [PATCH 08/12] xfs: simplify xfs_ioend_can_merge Christoph Hellwig
2019-06-24 16:00 ` Darrick J. Wong
2019-06-24 5:52 ` [PATCH 09/12] xfs: refactor the ioend merging code Christoph Hellwig
2019-06-24 16:04 ` Darrick J. Wong
2019-06-24 16:06 ` Nikolay Borisov
2019-06-25 10:14 ` Christoph Hellwig
2019-06-25 12:42 ` Nikolay Borisov
2019-06-25 14:45 ` Darrick J. Wong
2019-06-24 5:52 ` [PATCH 10/12] xfs: remove the fork fields in the writepage_ctx and ioend Christoph Hellwig
2019-06-24 16:08 ` Darrick J. Wong
2019-06-24 5:52 ` [PATCH 11/12] iomap: move the xfs writeback code to iomap.c Christoph Hellwig
2019-06-24 15:46 ` Darrick J. Wong
2019-06-25 10:08 ` Christoph Hellwig
2019-06-24 23:43 ` Dave Chinner
2019-06-25 10:10 ` Christoph Hellwig
2019-06-28 0:45 ` Dave Chinner
2019-06-28 5:33 ` Christoph Hellwig
2019-06-28 5:33 ` Christoph Hellwig
2019-07-01 0:08 ` Dave Chinner
2019-07-01 6:43 ` Christoph Hellwig
2019-07-01 23:09 ` Dave Chinner
2019-06-28 22:27 ` Luis Chamberlain
2019-07-11 21:31 ` Brendan Higgins
2019-06-24 5:52 ` [PATCH 12/12] iomap: add tracing for the address space operations Christoph Hellwig
2019-06-24 23:49 ` Dave Chinner
2019-06-25 10:15 ` Christoph Hellwig
2019-06-25 14:47 ` Darrick J. Wong
2019-06-27 22:35 ` Dave Chinner
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