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Tsirkin" , Jason Wang , linux-nvme@lists.infradead.org, virtualization@lists.linux-foundation.org, Song Liu , dm-devel@redhat.com, "Md. Haris Iqbal" , Jack Wang , linux-s390@vger.kernel.org, Richard Weinberger , xen-devel@lists.xenproject.org, linux-um@lists.infradead.org, Mike Snitzer , Josef Bacik , nbd@other.debian.org, linux-block@vger.kernel.org, Stefan Haberland , linux-raid@vger.kernel.org, "Martin K. Petersen" , Johannes Berg , =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= References: <20220418045314.360785-1-hch@lst.de> <20220418045314.360785-4-hch@lst.de> From: Damien Le Moal Organization: Western Digital Research In-Reply-To: <20220418045314.360785-4-hch@lst.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org On 4/18/22 13:53, Christoph Hellwig wrote: > The discard_alignment queue limit is named a bit misleading means the > offset into the block device at which the discard granularity starts. > Setting it to the discard granularity as done by null_blk is mostly > harmless but also useless. > > Signed-off-by: Christoph Hellwig > --- > drivers/block/null_blk/main.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c > index 5cb4c92cdffea..a521e914a9843 100644 > --- a/drivers/block/null_blk/main.c > +++ b/drivers/block/null_blk/main.c > @@ -1765,7 +1765,6 @@ static void null_config_discard(struct nullb *nullb) > } > > nullb->q->limits.discard_granularity = nullb->dev->blocksize; > - nullb->q->limits.discard_alignment = nullb->dev->blocksize; > blk_queue_max_discard_sectors(nullb->q, UINT_MAX >> 9); > } > Reviewed-by: Damien Le Moal -- Damien Le Moal Western Digital Research