From: Christoph Hellwig <hch@lst.de>
To: Ritesh Harjani <ritesh.list@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>,
Christian Brauner <brauner@kernel.org>,
"Darrick J. Wong" <djwong@kernel.org>,
Chandan Babu R <chandan.babu@oracle.com>,
Zhang Yi <yi.zhang@huaweicloud.com>,
linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH 01/13] iomap: clear the per-folio dirty bits on all writeback failures
Date: Mon, 27 Nov 2023 07:29:34 +0100 [thread overview]
Message-ID: <20231127062934.GA27241@lst.de> (raw)
In-Reply-To: <87edgbsvr8.fsf@doe.com>
On Mon, Nov 27, 2023 at 09:17:07AM +0530, Ritesh Harjani wrote:
> Christoph Hellwig <hch@lst.de> writes:
>
> > write_cache_pages always clear the page dirty bit before calling into the
> > file systems, and leaves folios with a writeback failure without the
> > dirty bit after return. We also clear the per-block writeback bits for
>
> you mean per-block dirty bits, right?
Yes, sorry.
> /*
> * Let the filesystem know what portion of the current page
> * failed to map. If the page hasn't been added to ioend, it
> * won't be affected by I/O completion and we must unlock it
> * now.
> */
> The comment to unlock it now becomes stale here.
Indeed.
> Maybe why not move iomap_clear_range_dirty() before?
A few patches down the ->discard_folio call moves into a helper, so
I'd rather avoid the churn here. I'll move that part of the comment
to thew new check below iomap_clear_range_dirty instead.
next prev parent reply other threads:[~2023-11-27 6:29 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-26 12:47 RFC: map multiple blocks per ->map_blocks in iomap writeback Christoph Hellwig
2023-11-26 12:47 ` [PATCH 01/13] iomap: clear the per-folio dirty bits on all writeback failures Christoph Hellwig
2023-11-27 3:47 ` Ritesh Harjani
2023-11-27 6:29 ` Christoph Hellwig [this message]
2023-11-26 12:47 ` [PATCH 02/13] iomap: treat inline data in iomap_writepage_map as an I/O error Christoph Hellwig
2023-11-27 5:01 ` Ritesh Harjani
2023-11-27 6:33 ` Christoph Hellwig
2023-11-29 4:40 ` Darrick J. Wong
2023-11-29 5:39 ` Christoph Hellwig
2023-11-26 12:47 ` [PATCH 03/13] iomap: move the io_folios field out of struct iomap_ioend Christoph Hellwig
2023-11-27 5:33 ` Ritesh Harjani
2023-11-29 4:41 ` Darrick J. Wong
2023-11-26 12:47 ` [PATCH 04/13] iomap: drop the obsolete PF_MEMALLOC check in iomap_do_writepage Christoph Hellwig
2023-11-27 6:39 ` Ritesh Harjani
2023-11-27 6:41 ` Christoph Hellwig
2023-11-29 4:45 ` Darrick J. Wong
2023-11-26 12:47 ` [PATCH 05/13] iomap: factor out a iomap_writepage_handle_eof helper Christoph Hellwig
2023-11-27 6:57 ` Ritesh Harjani
2023-11-27 7:02 ` Ritesh Harjani
2023-11-27 7:12 ` Christoph Hellwig
2023-11-29 4:48 ` Darrick J. Wong
2023-11-26 12:47 ` [PATCH 06/13] iomap: move all remaining per-folio logic into xfs_writepage_map Christoph Hellwig
2023-11-27 7:36 ` Ritesh Harjani
2023-11-27 19:20 ` Josef Bacik
2023-11-29 4:50 ` Darrick J. Wong
2023-11-26 12:47 ` [PATCH 07/13] iomap: clean up the iomap_new_ioend calling convention Christoph Hellwig
2023-11-27 7:43 ` Ritesh Harjani
2023-11-27 8:13 ` Christoph Hellwig
2023-11-29 4:51 ` Darrick J. Wong
2023-11-26 12:47 ` [PATCH 08/13] iomap: move the iomap_sector sector calculation out of iomap_add_to_ioend Christoph Hellwig
2023-11-27 9:54 ` Ritesh Harjani
2023-11-27 13:54 ` Christoph Hellwig
2023-11-29 4:53 ` Darrick J. Wong
2023-11-29 5:42 ` Christoph Hellwig
2023-11-26 12:47 ` [PATCH 09/13] iomap: don't chain bios Christoph Hellwig
2023-11-27 12:53 ` Zhang Yi
2023-11-27 13:51 ` Christoph Hellwig
2023-11-29 4:59 ` Darrick J. Wong
2023-11-29 5:40 ` Christoph Hellwig
2023-11-26 12:47 ` [PATCH 10/13] iomap: only call mapping_set_error once for each failed bio Christoph Hellwig
2023-11-29 5:03 ` Darrick J. Wong
2023-11-29 5:41 ` Christoph Hellwig
2023-11-26 12:47 ` [PATCH 11/13] iomap: factor out a iomap_writepage_map_block helper Christoph Hellwig
2023-11-29 5:06 ` Darrick J. Wong
2023-11-26 12:47 ` [PATCH 12/13] iomap: submit ioends immediately Christoph Hellwig
2023-11-29 5:14 ` Darrick J. Wong
2023-11-26 12:47 ` [PATCH 13/13] iomap: map multiple blocks at a time Christoph Hellwig
2023-11-29 5:25 ` Darrick J. Wong
2023-11-29 5:44 ` Christoph Hellwig
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