From: Christoph Hellwig <hch@lst.de>
To: "ruansy.fnst@fujitsu.com" <ruansy.fnst@fujitsu.com>
Cc: Christoph Hellwig <hch@lst.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-xfs@vger.kernel.org" <linux-xfs@vger.kernel.org>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"darrick.wong@oracle.com" <darrick.wong@oracle.com>,
"willy@infradead.org" <willy@infradead.org>,
"jack@suse.cz" <jack@suse.cz>,
"viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>,
"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>,
"ocfs2-devel@oss.oracle.com" <ocfs2-devel@oss.oracle.com>,
"david@fromorbit.com" <david@fromorbit.com>,
"rgoldwyn@suse.de" <rgoldwyn@suse.de>
Subject: Re: [PATCH v2 09/10] fs/xfs: Handle CoW for fsdax write() path
Date: Wed, 3 Mar 2021 11:43:36 +0100 [thread overview]
Message-ID: <20210303104336.GA20371@lst.de> (raw)
In-Reply-To: <OSBPR01MB2920500BEA2DF0D47885A8FDF4989@OSBPR01MB2920.jpnprd01.prod.outlook.com>
On Wed, Mar 03, 2021 at 09:57:48AM +0000, ruansy.fnst@fujitsu.com wrote:
> > What is the advantage of the ioemap_end handler here? It adds another
> > indirect funtion call to the fast path, so if we can avoid it, I'd
> > rather do that.
>
> These code were in xfs_file_dax_write(). I moved them into the iomap_end
> because the mmaped CoW need this.
>
> I know this is not so good, but I could not find another better way. Do you
> have any ideas?
mmaped copy is the copy_edge case? Maybe just use different iomap_ops for
that case vs plain write?
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To unsubscribe send an email to linux-nvdimm-leave@lists.01.org
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: "ruansy.fnst@fujitsu.com" <ruansy.fnst@fujitsu.com>
Cc: Christoph Hellwig <hch@lst.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-xfs@vger.kernel.org" <linux-xfs@vger.kernel.org>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"darrick.wong@oracle.com" <darrick.wong@oracle.com>,
"dan.j.williams@intel.com" <dan.j.williams@intel.com>,
"willy@infradead.org" <willy@infradead.org>,
"jack@suse.cz" <jack@suse.cz>,
"viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>,
"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>,
"ocfs2-devel@oss.oracle.com" <ocfs2-devel@oss.oracle.com>,
"david@fromorbit.com" <david@fromorbit.com>,
"rgoldwyn@suse.de" <rgoldwyn@suse.de>
Subject: Re: [PATCH v2 09/10] fs/xfs: Handle CoW for fsdax write() path
Date: Wed, 3 Mar 2021 11:43:36 +0100 [thread overview]
Message-ID: <20210303104336.GA20371@lst.de> (raw)
In-Reply-To: <OSBPR01MB2920500BEA2DF0D47885A8FDF4989@OSBPR01MB2920.jpnprd01.prod.outlook.com>
On Wed, Mar 03, 2021 at 09:57:48AM +0000, ruansy.fnst@fujitsu.com wrote:
> > What is the advantage of the ioemap_end handler here? It adds another
> > indirect funtion call to the fast path, so if we can avoid it, I'd
> > rather do that.
>
> These code were in xfs_file_dax_write(). I moved them into the iomap_end
> because the mmaped CoW need this.
>
> I know this is not so good, but I could not find another better way. Do you
> have any ideas?
mmaped copy is the copy_edge case? Maybe just use different iomap_ops for
that case vs plain write?
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: "ruansy.fnst@fujitsu.com" <ruansy.fnst@fujitsu.com>
Cc: "jack@suse.cz" <jack@suse.cz>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
"darrick.wong@oracle.com" <darrick.wong@oracle.com>,
"david@fromorbit.com" <david@fromorbit.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-xfs@vger.kernel.org" <linux-xfs@vger.kernel.org>,
"ocfs2-devel@oss.oracle.com" <ocfs2-devel@oss.oracle.com>,
"viro@zeniv.linux.org.uk" <viro@zeniv.linux.org.uk>,
"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
"dan.j.williams@intel.com" <dan.j.williams@intel.com>,
"linux-btrfs@vger.kernel.org" <linux-btrfs@vger.kernel.org>
Subject: Re: [Ocfs2-devel] [PATCH v2 09/10] fs/xfs: Handle CoW for fsdax write() path
Date: Wed, 3 Mar 2021 11:43:36 +0100 [thread overview]
Message-ID: <20210303104336.GA20371@lst.de> (raw)
In-Reply-To: <OSBPR01MB2920500BEA2DF0D47885A8FDF4989@OSBPR01MB2920.jpnprd01.prod.outlook.com>
On Wed, Mar 03, 2021 at 09:57:48AM +0000, ruansy.fnst@fujitsu.com wrote:
> > What is the advantage of the ioemap_end handler here? It adds another
> > indirect funtion call to the fast path, so if we can avoid it, I'd
> > rather do that.
>
> These code were in xfs_file_dax_write(). I moved them into the iomap_end
> because the mmaped CoW need this.
>
> I know this is not so good, but I could not find another better way. Do you
> have any ideas?
mmaped copy is the copy_edge case? Maybe just use different iomap_ops for
that case vs plain write?
_______________________________________________
Ocfs2-devel mailing list
Ocfs2-devel@oss.oracle.com
https://oss.oracle.com/mailman/listinfo/ocfs2-devel
next prev parent reply other threads:[~2021-03-03 10:43 UTC|newest]
Thread overview: 220+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-26 0:20 [PATCH v2 00/10] fsdax,xfs: Add reflink&dedupe support for fsdax Shiyang Ruan
2021-02-26 0:20 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Shiyang Ruan
2021-02-26 0:20 ` [PATCH v2 00/10] fsdax,xfs: " Shiyang Ruan
2021-02-26 0:20 ` [PATCH v2 01/10] fsdax: Factor helpers to simplify dax fault code Shiyang Ruan
2021-02-26 0:20 ` [Ocfs2-devel] " Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-03-03 9:13 ` Christoph Hellwig
2021-03-03 9:13 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-03 9:13 ` Christoph Hellwig
2021-02-26 0:20 ` [PATCH v2 02/10] fsdax: Factor helper: dax_fault_actor() Shiyang Ruan
2021-02-26 0:20 ` [Ocfs2-devel] " Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-03-03 9:28 ` Christoph Hellwig
2021-03-03 9:28 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-03 9:28 ` Christoph Hellwig
2021-03-12 9:01 ` ruansy.fnst
2021-03-12 9:01 ` [Ocfs2-devel] " ruansy.fnst
2021-03-12 9:01 ` ruansy.fnst
2021-02-26 0:20 ` [PATCH v2 03/10] fsdax: Output address in dax_iomap_pfn() and rename it Shiyang Ruan
2021-02-26 0:20 ` [Ocfs2-devel] " Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-02-26 0:20 ` [PATCH v2 04/10] fsdax: Introduce dax_iomap_cow_copy() Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-03-03 9:29 ` Christoph Hellwig
2021-03-03 9:29 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-03 9:29 ` Christoph Hellwig
2021-02-26 0:20 ` [PATCH v2 05/10] fsdax: Replace mmap entry in case of CoW Shiyang Ruan
2021-02-26 0:20 ` [Ocfs2-devel] " Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-03-03 9:30 ` Christoph Hellwig
2021-03-03 9:30 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-03 9:30 ` Christoph Hellwig
2021-03-03 9:41 ` ruansy.fnst
2021-03-03 9:41 ` [Ocfs2-devel] " ruansy.fnst
2021-03-03 9:41 ` ruansy.fnst
2021-03-03 9:44 ` Christoph Hellwig
2021-03-03 9:44 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-03 9:44 ` Christoph Hellwig
2021-03-03 9:48 ` Christoph Hellwig
2021-03-03 9:48 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-03 9:48 ` Christoph Hellwig
2021-02-26 0:20 ` [PATCH v2 06/10] fsdax: Add dax_iomap_cow_copy() for dax_iomap_zero Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-03-03 9:31 ` Christoph Hellwig
2021-03-03 9:31 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-03 9:31 ` Christoph Hellwig
2021-02-26 0:20 ` [PATCH v2 07/10] iomap: Introduce iomap_apply2() for operations on two files Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-02-26 4:14 ` Darrick J. Wong
2021-02-26 4:14 ` [Ocfs2-devel] " Darrick J. Wong
2021-02-26 4:14 ` Darrick J. Wong
2021-02-26 8:11 ` ruansy.fnst
2021-02-26 8:11 ` [Ocfs2-devel] " ruansy.fnst
2021-02-26 8:11 ` ruansy.fnst
2021-02-26 8:25 ` Shiyang Ruan
2021-02-26 8:25 ` [Ocfs2-devel] " Shiyang Ruan
2021-02-26 8:25 ` Shiyang Ruan
2021-03-04 5:41 ` [RESEND PATCH v2.1 " Shiyang Ruan
2021-03-04 5:41 ` [Ocfs2-devel] " Shiyang Ruan
2021-03-04 5:41 ` Shiyang Ruan
2021-03-11 12:30 ` Christoph Hellwig
2021-03-11 12:30 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-11 12:30 ` Christoph Hellwig
2021-02-26 0:20 ` [PATCH v2 08/10] fsdax: Dedup file range to use a compare function Shiyang Ruan
2021-02-26 0:20 ` [Ocfs2-devel] " Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-02-26 8:28 ` Shiyang Ruan
2021-02-26 8:28 ` [Ocfs2-devel] " Shiyang Ruan
2021-02-26 8:28 ` Shiyang Ruan
2021-03-03 8:20 ` Joe Perches
2021-03-03 8:20 ` [Ocfs2-devel] " Joe Perches
2021-03-03 8:20 ` Joe Perches
2021-03-03 8:45 ` ruansy.fnst
2021-03-03 8:45 ` [Ocfs2-devel] " ruansy.fnst
2021-03-03 9:04 ` Joe Perches
2021-03-03 9:04 ` [Ocfs2-devel] " Joe Perches
2021-03-03 9:39 ` hch
2021-03-03 9:39 ` [Ocfs2-devel] " hch
2021-03-03 9:46 ` ruansy.fnst
2021-03-03 9:46 ` [Ocfs2-devel] " ruansy.fnst
2021-03-04 5:42 ` [RESEND PATCH v2.1 " Shiyang Ruan
2021-03-04 5:42 ` [Ocfs2-devel] " Shiyang Ruan
2021-03-04 5:42 ` Shiyang Ruan
2021-02-26 0:20 ` [PATCH v2 09/10] fs/xfs: Handle CoW for fsdax write() path Shiyang Ruan
2021-02-26 0:20 ` [Ocfs2-devel] " Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-03-03 9:43 ` Christoph Hellwig
2021-03-03 9:43 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-03 9:43 ` Christoph Hellwig
2021-03-03 9:57 ` ruansy.fnst
2021-03-03 9:57 ` [Ocfs2-devel] " ruansy.fnst
2021-03-03 9:57 ` ruansy.fnst
2021-03-03 10:43 ` Christoph Hellwig [this message]
2021-03-03 10:43 ` [Ocfs2-devel] " Christoph Hellwig
2021-03-03 10:43 ` Christoph Hellwig
2021-03-04 1:35 ` ruansy.fnst
2021-03-04 1:35 ` [Ocfs2-devel] " ruansy.fnst
2021-03-04 1:35 ` ruansy.fnst
2021-02-26 0:20 ` [PATCH v2 10/10] fs/xfs: Add dedupe support for fsdax Shiyang Ruan
2021-02-26 0:20 ` [Ocfs2-devel] " Shiyang Ruan
2021-02-26 0:20 ` Shiyang Ruan
2021-02-26 9:45 ` Question about the "EXPERIMENTAL" tag for dax in XFS ruansy.fnst
2021-02-26 9:45 ` [Ocfs2-devel] " ruansy.fnst
2021-02-26 9:45 ` ruansy.fnst
2021-02-26 19:04 ` Darrick J. Wong
2021-02-26 19:04 ` [Ocfs2-devel] " Darrick J. Wong
2021-02-26 19:04 ` Darrick J. Wong
2021-02-26 19:24 ` Dan Williams
2021-02-26 19:24 ` [Ocfs2-devel] " Dan Williams
2021-02-26 19:24 ` Dan Williams
2021-02-26 20:51 ` Dave Chinner
2021-02-26 20:51 ` [Ocfs2-devel] " Dave Chinner
2021-02-26 20:51 ` Dave Chinner
2021-02-26 20:59 ` Dan Williams
2021-02-26 20:59 ` [Ocfs2-devel] " Dan Williams
2021-02-26 20:59 ` Dan Williams
2021-02-26 21:27 ` Dave Chinner
2021-02-26 21:27 ` [Ocfs2-devel] " Dave Chinner
2021-02-26 21:27 ` Dave Chinner
2021-02-26 22:41 ` Dan Williams
2021-02-26 22:41 ` [Ocfs2-devel] " Dan Williams
2021-02-26 22:41 ` Dan Williams
2021-02-27 22:36 ` Dave Chinner
2021-02-27 22:36 ` [Ocfs2-devel] " Dave Chinner
2021-02-27 22:36 ` Dave Chinner
2021-02-27 23:40 ` Dan Williams
2021-02-27 23:40 ` [Ocfs2-devel] " Dan Williams
2021-02-27 23:40 ` Dan Williams
2021-02-28 22:38 ` Dave Chinner
2021-02-28 22:38 ` [Ocfs2-devel] " Dave Chinner
2021-02-28 22:38 ` Dave Chinner
2021-03-01 20:55 ` Dan Williams
2021-03-01 20:55 ` [Ocfs2-devel] " Dan Williams
2021-03-01 20:55 ` Dan Williams
2021-03-01 22:46 ` Dave Chinner
2021-03-01 22:46 ` [Ocfs2-devel] " Dave Chinner
2021-03-01 22:46 ` Dave Chinner
2021-03-02 0:32 ` Dan Williams
2021-03-02 0:32 ` [Ocfs2-devel] " Dan Williams
2021-03-02 0:32 ` Dan Williams
2021-03-02 2:42 ` Dave Chinner
2021-03-02 2:42 ` [Ocfs2-devel] " Dave Chinner
2021-03-02 2:42 ` Dave Chinner
2021-03-02 3:33 ` Dan Williams
2021-03-02 3:33 ` [Ocfs2-devel] " Dan Williams
2021-03-02 3:33 ` Dan Williams
2021-03-02 5:38 ` Dave Chinner
2021-03-02 5:38 ` [Ocfs2-devel] " Dave Chinner
2021-03-02 5:38 ` Dave Chinner
2021-03-02 5:50 ` Dan Williams
2021-03-02 5:50 ` [Ocfs2-devel] " Dan Williams
2021-03-02 5:50 ` Dan Williams
2021-03-02 3:28 ` Darrick J. Wong
2021-03-02 3:28 ` [Ocfs2-devel] " Darrick J. Wong
2021-03-02 3:28 ` Darrick J. Wong
2021-03-02 5:41 ` Dan Williams
2021-03-02 5:41 ` [Ocfs2-devel] " Dan Williams
2021-03-02 5:41 ` Dan Williams
2021-03-02 7:57 ` Dave Chinner
2021-03-02 7:57 ` [Ocfs2-devel] " Dave Chinner
2021-03-02 7:57 ` Dave Chinner
2021-03-02 17:49 ` Dan Williams
2021-03-02 17:49 ` [Ocfs2-devel] " Dan Williams
2021-03-02 17:49 ` Dan Williams
2021-03-04 23:40 ` Darrick J. Wong
2021-03-04 23:40 ` [Ocfs2-devel] " Darrick J. Wong
2021-03-04 23:40 ` Darrick J. Wong
2021-03-01 7:26 ` Yasunori Goto
2021-03-01 7:26 ` [Ocfs2-devel] " Yasunori Goto
2021-03-01 7:26 ` Yasunori Goto
2021-03-01 21:34 ` Dan Williams
2021-03-01 21:34 ` [Ocfs2-devel] " Dan Williams
2021-03-01 21:34 ` Dan Williams
2021-03-09 6:36 ` [PATCH v2 00/10] fsdax,xfs: Add reflink&dedupe support for fsdax Xiaoguang Wang
2021-03-09 6:36 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Xiaoguang Wang
2021-03-09 6:36 ` [PATCH v2 00/10] fsdax,xfs: " Xiaoguang Wang
2021-03-10 1:32 ` ruansy.fnst
2021-03-10 1:32 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " ruansy.fnst
2021-03-09 16:19 ` [PATCH v2 00/10] fsdax,xfs: " Goldwyn Rodrigues
2021-03-09 16:19 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Goldwyn Rodrigues
2021-03-09 16:19 ` [PATCH v2 00/10] fsdax,xfs: " Goldwyn Rodrigues
2021-03-10 1:26 ` ruansy.fnst
2021-03-10 1:26 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " ruansy.fnst
2021-03-10 1:26 ` [PATCH v2 00/10] fsdax,xfs: " ruansy.fnst
2021-03-10 12:30 ` Neal Gompa
2021-03-10 12:30 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Neal Gompa
2021-03-10 12:30 ` [PATCH v2 00/10] fsdax,xfs: " Neal Gompa
2021-03-10 13:02 ` Matthew Wilcox
2021-03-10 13:02 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Matthew Wilcox
2021-03-10 13:02 ` [PATCH v2 00/10] fsdax,xfs: " Matthew Wilcox
2021-03-10 13:36 ` Neal Gompa
2021-03-10 13:36 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Neal Gompa
2021-03-10 13:36 ` [PATCH v2 00/10] fsdax,xfs: " Neal Gompa
2021-03-10 13:55 ` Matthew Wilcox
2021-03-10 13:55 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Matthew Wilcox
2021-03-10 13:55 ` [PATCH v2 00/10] fsdax,xfs: " Matthew Wilcox
2021-03-10 14:21 ` Goldwyn Rodrigues
2021-03-10 14:21 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Goldwyn Rodrigues
2021-03-10 14:21 ` [PATCH v2 00/10] fsdax,xfs: " Goldwyn Rodrigues
2021-03-10 14:26 ` Matthew Wilcox
2021-03-10 14:26 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Matthew Wilcox
2021-03-10 14:26 ` [PATCH v2 00/10] fsdax,xfs: " Matthew Wilcox
2021-03-10 17:04 ` Goldwyn Rodrigues
2021-03-10 17:04 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Goldwyn Rodrigues
2021-03-10 17:04 ` [PATCH v2 00/10] fsdax,xfs: " Goldwyn Rodrigues
2021-03-11 0:53 ` Dan Williams
2021-03-11 0:53 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Dan Williams
2021-03-11 0:53 ` [PATCH v2 00/10] fsdax,xfs: " Dan Williams
2021-03-11 8:26 ` Neal Gompa
2021-03-11 8:26 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Neal Gompa
2021-03-11 8:26 ` [PATCH v2 00/10] fsdax,xfs: " Neal Gompa
2021-03-13 13:07 ` Adam Borowski
2021-03-13 13:07 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Adam Borowski
2021-03-13 13:07 ` [PATCH v2 00/10] fsdax,xfs: " Adam Borowski
2021-03-13 16:24 ` Neal Gompa
2021-03-13 16:24 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Neal Gompa
2021-03-13 16:24 ` [PATCH v2 00/10] fsdax,xfs: " Neal Gompa
2021-03-13 22:00 ` Adam Borowski
2021-03-13 22:00 ` [Ocfs2-devel] [PATCH v2 00/10] fsdax, xfs: " Adam Borowski
2021-03-13 22:00 ` [PATCH v2 00/10] fsdax,xfs: " Adam Borowski
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