From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: "Darrick J. Wong" <darrick.wong@oracle.com>
Cc: axboe@kernel.dk, hch@infradead.org, martin.petersen@oracle.com,
linux-api@vger.kernel.org, linux-kernel@vger.kernel.org,
shane.seymour@hpe.com, bfields@fieldses.org,
linux-fsdevel@vger.kernel.org, jlayton@poochiereds.net
Subject: Re: [PATCH v5 2/2] block: create ioctl to discard-or-zeroout a range of blocks
Date: Thu, 10 Dec 2015 12:38:18 -0500 [thread overview]
Message-ID: <yq1y4d22ohh.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <20151208062111.21427.30921.stgit@birch.djwong.org> (Darrick J. Wong's message of "Mon, 07 Dec 2015 22:21:11 -0800")
>>>>> "Darrick" == Darrick J Wong <darrick.wong@oracle.com> writes:
Darrick> Create a new ioctl to expose the block layer's newfound ability
Darrick> to issue either a zeroing discard, a WRITE SAME with a zero
Darrick> page, or a regular write with the zero page. This BLKZEROOUT2
Darrick> ioctl takes {start, length, flags} as parameters. So far, the
Darrick> only flag available is to enable the zeroing discard part --
Darrick> without it, the call invokes the old BLKZEROOUT behavior.
Darrick> start and length have the same meaning as in BLKZEROOUT.
Darrick> This new ioctl also invalidates the page cache correctly on
Darrick> account of the previous patch in the series.
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
--
Martin K. Petersen Oracle Linux Engineering
WARNING: multiple messages have this Message-ID (diff)
From: "Martin K. Petersen" <martin.petersen-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
To: "Darrick J. Wong" <darrick.wong-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Cc: axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org,
hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
martin.petersen-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org,
linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
shane.seymour-ZPxbGqLxI0U@public.gmane.org,
bfields-uC3wQj2KruNg9hUCZPvPmw@public.gmane.org,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
jlayton-vpEMnDpepFuMZCB2o+C8xQ@public.gmane.org
Subject: Re: [PATCH v5 2/2] block: create ioctl to discard-or-zeroout a range of blocks
Date: Thu, 10 Dec 2015 12:38:18 -0500 [thread overview]
Message-ID: <yq1y4d22ohh.fsf@sermon.lab.mkp.net> (raw)
In-Reply-To: <20151208062111.21427.30921.stgit-PTl6brltDGh4DFYR7WNSRA@public.gmane.org> (Darrick J. Wong's message of "Mon, 07 Dec 2015 22:21:11 -0800")
>>>>> "Darrick" == Darrick J Wong <darrick.wong-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org> writes:
Darrick> Create a new ioctl to expose the block layer's newfound ability
Darrick> to issue either a zeroing discard, a WRITE SAME with a zero
Darrick> page, or a regular write with the zero page. This BLKZEROOUT2
Darrick> ioctl takes {start, length, flags} as parameters. So far, the
Darrick> only flag available is to enable the zeroing discard part --
Darrick> without it, the call invokes the old BLKZEROOUT behavior.
Darrick> start and length have the same meaning as in BLKZEROOUT.
Darrick> This new ioctl also invalidates the page cache correctly on
Darrick> account of the previous patch in the series.
Reviewed-by: Martin K. Petersen <martin.petersen-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2015-12-10 17:38 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-08 6:21 [PATCH v5 1/2] block: invalidate the page cache when issuing BLKZEROOUT Darrick J. Wong
2015-12-08 6:21 ` Darrick J. Wong
2015-12-08 6:21 ` [PATCH v5 2/2] block: create ioctl to discard-or-zeroout a range of blocks Darrick J. Wong
2015-12-08 6:21 ` Darrick J. Wong
2015-12-10 17:38 ` Martin K. Petersen [this message]
2015-12-10 17:38 ` Martin K. Petersen
2015-12-14 16:32 ` Christoph Hellwig
2015-12-14 16:32 ` Christoph Hellwig
2015-12-10 17:37 ` [PATCH v5 1/2] block: invalidate the page cache when issuing BLKZEROOUT Martin K. Petersen
2015-12-10 17:37 ` Martin K. Petersen
2015-12-14 16:32 ` Christoph Hellwig
2015-12-14 16:32 ` Christoph Hellwig
2015-12-15 0:04 ` Seymour, Shane M
2015-12-15 0:04 ` Seymour, Shane M
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