From: Mike Snitzer <snitzer@redhat.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Dan Williams <dan.j.williams@intel.com>,
Vishal Verma <vishal.l.verma@intel.com>,
Dave Jiang <dave.jiang@intel.com>,
Alasdair Kergon <agk@redhat.com>, Ira Weiny <ira.weiny@intel.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Vivek Goyal <vgoyal@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
Miklos Szeredi <miklos@szeredi.hu>,
Matthew Wilcox <willy@infradead.org>,
dm-devel@redhat.com, nvdimm@lists.linux.dev,
linux-s390@vger.kernel.org, linux-fsdevel@vger.kernel.org,
virtualization@lists.linux-foundation.org
Subject: Re: [PATCH 4/4] dax: remove the copy_from_iter and copy_to_iter methods
Date: Thu, 6 Jan 2022 09:42:36 -0500 [thread overview]
Message-ID: <Ydb/3P+8nvjCjYfO@redhat.com> (raw)
In-Reply-To: <20211215084508.435401-5-hch@lst.de>
On Wed, Dec 15 2021 at 3:45P -0500,
Christoph Hellwig <hch@lst.de> wrote:
> These methods indirect the actual DAX read/write path. In the end pmem
> uses magic flush and mc safe variants and fuse and dcssblk use plain ones
> while device mapper picks redirects to the underlying device.
>
> Add set_dax_nocache() and set_dax_nomc() APIs to control which copy
> routines are used to remove indirect call from the read/write fast path
> as well as a lot of boilerplate code.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Vivek Goyal <vgoyal@redhat.com> [virtiofs]
Late to the game here, but quite a lot of dax DM code removed, thanks!
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
WARNING: multiple messages have this Message-ID (diff)
From: Mike Snitzer <snitzer@redhat.com>
To: Christoph Hellwig <hch@lst.de>
Cc: nvdimm@lists.linux.dev, linux-s390@vger.kernel.org,
Dave Jiang <dave.jiang@intel.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Miklos Szeredi <miklos@szeredi.hu>,
Vishal Verma <vishal.l.verma@intel.com>,
Heiko Carstens <hca@linux.ibm.com>,
Matthew Wilcox <willy@infradead.org>,
virtualization@lists.linux-foundation.org,
Christian Borntraeger <borntraeger@de.ibm.com>,
dm-devel@redhat.com, Vivek Goyal <vgoyal@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
linux-fsdevel@vger.kernel.org,
Dan Williams <dan.j.williams@intel.com>,
Ira Weiny <ira.weiny@intel.com>, Alasdair Kergon <agk@redhat.com>
Subject: Re: [PATCH 4/4] dax: remove the copy_from_iter and copy_to_iter methods
Date: Thu, 6 Jan 2022 09:42:36 -0500 [thread overview]
Message-ID: <Ydb/3P+8nvjCjYfO@redhat.com> (raw)
In-Reply-To: <20211215084508.435401-5-hch@lst.de>
On Wed, Dec 15 2021 at 3:45P -0500,
Christoph Hellwig <hch@lst.de> wrote:
> These methods indirect the actual DAX read/write path. In the end pmem
> uses magic flush and mc safe variants and fuse and dcssblk use plain ones
> while device mapper picks redirects to the underlying device.
>
> Add set_dax_nocache() and set_dax_nomc() APIs to control which copy
> routines are used to remove indirect call from the read/write fast path
> as well as a lot of boilerplate code.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Vivek Goyal <vgoyal@redhat.com> [virtiofs]
Late to the game here, but quite a lot of dax DM code removed, thanks!
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
WARNING: multiple messages have this Message-ID (diff)
From: Mike Snitzer <snitzer@redhat.com>
To: Christoph Hellwig <hch@lst.de>
Cc: nvdimm@lists.linux.dev, linux-s390@vger.kernel.org,
Dave Jiang <dave.jiang@intel.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Miklos Szeredi <miklos@szeredi.hu>,
Vishal Verma <vishal.l.verma@intel.com>,
Heiko Carstens <hca@linux.ibm.com>,
Matthew Wilcox <willy@infradead.org>,
virtualization@lists.linux-foundation.org,
Christian Borntraeger <borntraeger@de.ibm.com>,
dm-devel@redhat.com, Vivek Goyal <vgoyal@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
linux-fsdevel@vger.kernel.org,
Dan Williams <dan.j.williams@intel.com>,
Ira Weiny <ira.weiny@intel.com>, Alasdair Kergon <agk@redhat.com>
Subject: Re: [dm-devel] [PATCH 4/4] dax: remove the copy_from_iter and copy_to_iter methods
Date: Thu, 6 Jan 2022 09:42:36 -0500 [thread overview]
Message-ID: <Ydb/3P+8nvjCjYfO@redhat.com> (raw)
In-Reply-To: <20211215084508.435401-5-hch@lst.de>
On Wed, Dec 15 2021 at 3:45P -0500,
Christoph Hellwig <hch@lst.de> wrote:
> These methods indirect the actual DAX read/write path. In the end pmem
> uses magic flush and mc safe variants and fuse and dcssblk use plain ones
> while device mapper picks redirects to the underlying device.
>
> Add set_dax_nocache() and set_dax_nomc() APIs to control which copy
> routines are used to remove indirect call from the read/write fast path
> as well as a lot of boilerplate code.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Vivek Goyal <vgoyal@redhat.com> [virtiofs]
Late to the game here, but quite a lot of dax DM code removed, thanks!
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
--
dm-devel mailing list
dm-devel@redhat.com
https://listman.redhat.com/mailman/listinfo/dm-devel
next prev parent reply other threads:[~2022-01-06 14:42 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-15 8:45 devirtualize kernel access to DAX v2 Christoph Hellwig
2021-12-15 8:45 ` [dm-devel] " Christoph Hellwig
2021-12-15 8:45 ` Christoph Hellwig
2021-12-15 8:45 ` [PATCH 1/4] uio: remove copy_from_iter_flushcache() and copy_mc_to_iter() Christoph Hellwig
2021-12-15 8:45 ` [dm-devel] " Christoph Hellwig
2021-12-15 8:45 ` Christoph Hellwig
2021-12-15 8:45 ` [PATCH 2/4] dax: simplify dax_synchronous and set_dax_synchronous Christoph Hellwig
2021-12-15 8:45 ` [dm-devel] " Christoph Hellwig
2021-12-15 8:45 ` Christoph Hellwig
2021-12-15 8:45 ` [PATCH 3/4] dax: remove the DAXDEV_F_SYNC flag Christoph Hellwig
2021-12-15 8:45 ` [dm-devel] " Christoph Hellwig
2021-12-15 8:45 ` Christoph Hellwig
2021-12-15 8:45 ` [PATCH 4/4] dax: remove the copy_from_iter and copy_to_iter methods Christoph Hellwig
2021-12-15 8:45 ` [dm-devel] " Christoph Hellwig
2021-12-15 8:45 ` Christoph Hellwig
2022-01-06 14:42 ` Mike Snitzer [this message]
2022-01-06 14:42 ` [dm-devel] " Mike Snitzer
2022-01-06 14:42 ` Mike Snitzer
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