From: Christoph Hellwig <hch@infradead.org>
To: Dave Chinner <david@fromorbit.com>
Cc: "Darrick J. Wong" <djwong@kernel.org>, Stefan Roesch <shr@fb.com>,
io-uring@vger.kernel.org, kernel-team@fb.com, linux-mm@kvack.org,
linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [RFC PATCH v1 11/18] xfs: add async buffered write support
Date: Mon, 9 May 2022 23:47:59 -0700 [thread overview]
Message-ID: <YnoKnyzqe3D70zoE@infradead.org> (raw)
In-Reply-To: <20220510011205.GR1098723@dread.disaster.area>
On Tue, May 10, 2022 at 11:12:05AM +1000, Dave Chinner wrote:
> > I still don't understand why /any/ of this is necessary. When does
> > iocb->ki_filp->f_inode != iocb->ki_filp->f_mapping->host?
>
> I already asked that question because I don't know the answer,
> either. I suspect the answer is "block dev inodes" but that then
> just raises the question of "how do we get them here?" and I don't
> know the answer to that, either. I don't have the time to dig into
> this and I don't expect anyone to just pop up with an answer,
> either. So in the mean time, we can just ignore it for the purpose
> of this patch set...
Weird device nodes (including block device) is the answer. It never
happens for a normal file system file struct that we'd see in XFS.
next prev parent reply other threads:[~2022-05-10 6:48 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-26 17:43 [RFC PATCH v1 00/18] io-uring/xfs: support async buffered writes Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 01/18] block: add check for async buffered writes to generic_write_checks Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 02/18] mm: add FGP_ATOMIC flag to __filemap_get_folio() Stefan Roesch
2022-04-26 19:06 ` Matthew Wilcox
2022-04-28 19:54 ` Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 03/18] iomap: add iomap_page_create_gfp to allocate iomap_pages Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 04/18] iomap: use iomap_page_create_gfp() in __iomap_write_begin Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 05/18] iomap: add async buffered write support Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 06/18] xfs: add iomap " Stefan Roesch
2022-04-26 22:54 ` Dave Chinner
2022-04-28 20:03 ` Stefan Roesch
2022-04-28 21:44 ` Dave Chinner
2022-04-26 17:43 ` [RFC PATCH v1 07/18] fs: split off need_remove_file_privs() do_remove_file_privs() Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 08/18] fs: split off need_file_update_time and do_file_update_time Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 09/18] fs: add pending file update time flag Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 10/18] xfs: Enable async write file modification handling Stefan Roesch
2022-04-26 22:55 ` Dave Chinner
2022-04-27 12:07 ` Christian Brauner
2022-04-26 17:43 ` [RFC PATCH v1 11/18] xfs: add async buffered write support Stefan Roesch
2022-04-26 22:56 ` Dave Chinner
2022-04-28 19:58 ` Stefan Roesch
2022-04-28 21:54 ` Dave Chinner
2022-05-02 21:21 ` Stefan Roesch
2022-05-06 9:29 ` Dave Chinner
2022-05-09 19:32 ` Stefan Roesch
2022-05-09 23:24 ` Dave Chinner
2022-05-09 23:44 ` Darrick J. Wong
2022-05-10 1:12 ` Dave Chinner
2022-05-10 6:47 ` Christoph Hellwig [this message]
2022-05-16 2:24 ` Dave Chinner
2022-05-16 13:39 ` Christoph Hellwig
2022-04-26 17:43 ` [RFC PATCH v1 12/18] io_uring: add support for async buffered writes Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 13/18] io_uring: add tracepoint for short writes Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 14/18] sched: add new fields to task_struct Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 15/18] mm: support write throttling for async buffered writes Stefan Roesch
2022-04-28 17:47 ` Jan Kara
2022-04-28 20:16 ` Stefan Roesch
2022-05-10 9:50 ` Jan Kara
2022-05-10 20:16 ` Stefan Roesch
2022-05-11 10:38 ` Jan Kara
2022-05-13 18:57 ` Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 16/18] iomap: User " Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 17/18] io_uring: support write " Stefan Roesch
2022-04-26 17:43 ` [RFC PATCH v1 18/18] xfs: enable async buffered write support Stefan Roesch
2022-04-26 22:37 ` [RFC PATCH v1 00/18] io-uring/xfs: support async buffered writes Dave Chinner
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