From: Pankaj Raghav <p.raghav@samsung.com> To: Damien Le Moal <damien.lemoal@opensource.wdc.com>, <jaegeuk@kernel.org>, <hare@suse.de>, <dsterba@suse.com>, <axboe@kernel.dk>, <hch@lst.de>, <snitzer@kernel.org> Cc: Chris Mason <clm@fb.com>, Josef Bacik <josef@toxicpanda.com>, <bvanassche@acm.org>, <linux-fsdevel@vger.kernel.org>, <matias.bjorling@wdc.com>, Jens Axboe <axboe@fb.com>, <gost.dev@samsung.com>, <jonathan.derrick@linux.dev>, <jiangbo.365@bytedance.com>, <linux-nvme@lists.infradead.org>, <dm-devel@redhat.com>, Naohiro Aota <naohiro.aota@wdc.com>, <linux-kernel@vger.kernel.org>, Johannes Thumshirn <jth@kernel.org>, Sagi Grimberg <sagi@grimberg.me>, Alasdair Kergon <agk@redhat.com>, <linux-block@vger.kernel.org>, Chaitanya Kulkarni <kch@nvidia.com>, Keith Busch <kbusch@kernel.org>, <linux-btrfs@vger.kernel.org>, Luis Chamberlain <mcgrof@kernel.org> Subject: Re: [PATCH v3 10/11] null_blk: allow non power of 2 zoned devices Date: Mon, 9 May 2022 13:06:18 +0200 [thread overview] Message-ID: <aef68bcf-4924-8004-3320-325e05ca9b20@samsung.com> (raw) In-Reply-To: <39a80347-af70-8af0-024a-52f92e27a14a@opensource.wdc.com> >> diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c >> index 5cb4c92cd..ed9a58201 100644 >> --- a/drivers/block/null_blk/main.c >> +++ b/drivers/block/null_blk/main.c >> @@ -1929,9 +1929,8 @@ static int null_validate_conf(struct nullb_device *dev) >> if (dev->queue_mode == NULL_Q_BIO) >> dev->mbps = 0; >> >> - if (dev->zoned && >> - (!dev->zone_size || !is_power_of_2(dev->zone_size))) { >> - pr_err("zone_size must be power-of-two\n"); >> + if (dev->zoned && !dev->zone_size) { >> + pr_err("zone_size must not be zero\n"); > > May be a simpler phrasing would be better: > > pr_err("Invalid zero zone size\n"); > Ack. I will change this in the next rev. >> return -EINVAL; >> } >> >> diff --git a/drivers/block/null_blk/zoned.c b/drivers/block/null_blk/zoned.c >> index dae54dd1a..00c34e65e 100644 >> --- a/drivers/block/null_blk/zoned.c >> +++ b/drivers/block/null_blk/zoned.c >> @@ -13,7 +13,10 @@ static inline sector_t mb_to_sects(unsigned long mb) >> >> static inline unsigned int null_zone_no(struct nullb_device *dev, sector_t sect) >> { >> - return sect >> ilog2(dev->zone_size_sects); >> + if (is_power_of_2(dev->zone_size_sects)) >> + return sect >> ilog2(dev->zone_size_sects); > > As a separate patch, I think we should really have ilog2(dev->zone_size_sects) > as a dev field to avoid doing this ilog2 for every call.. > I don't think that is possible because `zone_size_sects` can also be non po2.
WARNING: multiple messages have this Message-ID (diff)
From: Pankaj Raghav <p.raghav@samsung.com> To: Damien Le Moal <damien.lemoal@opensource.wdc.com>, <jaegeuk@kernel.org>, <hare@suse.de>, <dsterba@suse.com>, <axboe@kernel.dk>, <hch@lst.de>, <snitzer@kernel.org> Cc: Naohiro Aota <naohiro.aota@wdc.com>, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, bvanassche@acm.org, Luis Chamberlain <mcgrof@kernel.org>, gost.dev@samsung.com, Josef Bacik <josef@toxicpanda.com>, linux-nvme@lists.infradead.org, jiangbo.365@bytedance.com, Jens Axboe <axboe@fb.com>, Chris Mason <clm@fb.com>, dm-devel@redhat.com, linux-btrfs@vger.kernel.org, Alasdair Kergon <agk@redhat.com>, jonathan.derrick@linux.dev, linux-fsdevel@vger.kernel.org, Chaitanya Kulkarni <kch@nvidia.com>, Johannes Thumshirn <jth@kernel.org>, Keith Busch <kbusch@kernel.org>, matias.bjorling@wdc.com, Sagi Grimberg <sagi@grimberg.me> Subject: Re: [dm-devel] [PATCH v3 10/11] null_blk: allow non power of 2 zoned devices Date: Mon, 9 May 2022 13:06:18 +0200 [thread overview] Message-ID: <aef68bcf-4924-8004-3320-325e05ca9b20@samsung.com> (raw) In-Reply-To: <39a80347-af70-8af0-024a-52f92e27a14a@opensource.wdc.com> >> diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c >> index 5cb4c92cd..ed9a58201 100644 >> --- a/drivers/block/null_blk/main.c >> +++ b/drivers/block/null_blk/main.c >> @@ -1929,9 +1929,8 @@ static int null_validate_conf(struct nullb_device *dev) >> if (dev->queue_mode == NULL_Q_BIO) >> dev->mbps = 0; >> >> - if (dev->zoned && >> - (!dev->zone_size || !is_power_of_2(dev->zone_size))) { >> - pr_err("zone_size must be power-of-two\n"); >> + if (dev->zoned && !dev->zone_size) { >> + pr_err("zone_size must not be zero\n"); > > May be a simpler phrasing would be better: > > pr_err("Invalid zero zone size\n"); > Ack. I will change this in the next rev. >> return -EINVAL; >> } >> >> diff --git a/drivers/block/null_blk/zoned.c b/drivers/block/null_blk/zoned.c >> index dae54dd1a..00c34e65e 100644 >> --- a/drivers/block/null_blk/zoned.c >> +++ b/drivers/block/null_blk/zoned.c >> @@ -13,7 +13,10 @@ static inline sector_t mb_to_sects(unsigned long mb) >> >> static inline unsigned int null_zone_no(struct nullb_device *dev, sector_t sect) >> { >> - return sect >> ilog2(dev->zone_size_sects); >> + if (is_power_of_2(dev->zone_size_sects)) >> + return sect >> ilog2(dev->zone_size_sects); > > As a separate patch, I think we should really have ilog2(dev->zone_size_sects) > as a dev field to avoid doing this ilog2 for every call.. > I don't think that is possible because `zone_size_sects` can also be non po2. -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
next prev parent reply other threads:[~2022-05-09 11:06 UTC|newest] Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20220506081106eucas1p181e83ef352eb8bfb1752bee0cf84020f@eucas1p1.samsung.com> 2022-05-06 8:10 ` [PATCH v3 00/11] support non power of 2 zoned devices Pankaj Raghav 2022-05-06 8:10 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081107eucas1p1070e00b208e00090c235017435be1593@eucas1p1.samsung.com> 2022-05-06 8:10 ` [PATCH v3 01/11] block: make blkdev_nr_zones and blk_queue_zone_no generic for npo2 zsze Pankaj Raghav 2022-05-06 8:10 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081108eucas1p2ca72ccafb05dfdcc5b8ba9393da1ce60@eucas1p2.samsung.com> 2022-05-06 8:10 ` [PATCH v3 02/11] block: allow blk-zoned devices to have non-power-of-2 zone size Pankaj Raghav 2022-05-06 8:10 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081109eucas1p26bbb68a1740b1af923ed862a93112780@eucas1p2.samsung.com> 2022-05-06 8:10 ` [PATCH v3 03/11] nvme: zns: Allow ZNS drives that have non-power_of_2 " Pankaj Raghav 2022-05-06 8:10 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081110eucas1p1b6c624ddca1c41b9838bb5b85f8ca5ff@eucas1p1.samsung.com> 2022-05-06 8:10 ` [PATCH v3 04/11] nvmet: Allow ZNS target to support non-power_of_2 zone sizes Pankaj Raghav 2022-05-06 8:10 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081111eucas1p11e4dd5a89ce49939bbea57433cea046f@eucas1p1.samsung.com> 2022-05-06 8:10 ` [PATCH v3 05/11] btrfs: zoned: Cache superblock location in btrfs_zoned_device_info Pankaj Raghav 2022-05-06 8:10 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081112eucas1p2f6116cb713749c259a6da533df9c2505@eucas1p2.samsung.com> 2022-05-06 8:11 ` [PATCH v3 06/11] btrfs: zoned: Make sb_zone_number function non power of 2 compatible Pankaj Raghav 2022-05-06 8:11 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081113eucas1p25deb73a4b7898476d2e8e3d35b16f879@eucas1p2.samsung.com> 2022-05-06 8:11 ` [PATCH v3 07/11] btrfs: zoned: use generic btrfs zone helpers to support npo2 zoned devices Pankaj Raghav 2022-05-06 8:11 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081114eucas1p1a9d86eb429a6f68c29d1980891f49786@eucas1p1.samsung.com> 2022-05-06 8:11 ` [PATCH v3 08/11] btrfs: zoned: relax the alignment constraint for " Pankaj Raghav 2022-05-06 8:11 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081115eucas1p2e7bed137c74be42a702732027581330e@eucas1p2.samsung.com> 2022-05-06 8:11 ` [PATCH v3 09/11] zonefs: allow non power of 2 " Pankaj Raghav 2022-05-06 8:11 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220506081116eucas1p2cce67bbf30f4c9c4e6854965be41b098@eucas1p2.samsung.com> 2022-05-06 8:11 ` [PATCH v3 10/11] null_blk: " Pankaj Raghav 2022-05-06 8:11 ` [dm-devel] " Pankaj Raghav 2022-05-06 15:47 ` Damien Le Moal 2022-05-06 15:47 ` [dm-devel] " Damien Le Moal 2022-05-09 11:06 ` Pankaj Raghav [this message] 2022-05-09 11:06 ` Pankaj Raghav 2022-05-09 11:31 ` Damien Le Moal 2022-05-09 11:31 ` [dm-devel] " Damien Le Moal 2022-05-09 11:56 ` Pankaj Raghav 2022-05-09 11:56 ` [dm-devel] " Pankaj Raghav 2022-05-12 17:22 ` Bart Van Assche 2022-05-12 17:22 ` [dm-devel] " Bart Van Assche [not found] ` <CGME20220506081118eucas1p17f3c29cc36d748c3b5a3246f069f434a@eucas1p1.samsung.com> 2022-05-06 8:11 ` [PATCH v3 11/11] dm-zoned: ensure only power of 2 zone sizes are allowed Pankaj Raghav 2022-05-06 8:11 ` [dm-devel] " Pankaj Raghav 2022-05-06 15:41 ` Damien Le Moal 2022-05-06 15:41 ` [dm-devel] " Damien Le Moal 2022-05-09 11:03 ` Pankaj Raghav 2022-05-09 11:03 ` [dm-devel] " Pankaj Raghav 2022-05-09 16:05 ` Mike Snitzer 2022-05-09 16:05 ` [dm-devel] " Mike Snitzer 2022-05-09 18:54 ` David Sterba 2022-05-09 18:54 ` [dm-devel] " David Sterba 2022-05-11 14:39 ` Pankaj Raghav 2022-05-11 14:39 ` [dm-devel] " Pankaj Raghav 2022-05-11 16:00 ` David Sterba 2022-05-11 16:00 ` [dm-devel] " David Sterba 2022-05-12 8:27 ` Pankaj Raghav 2022-05-12 8:27 ` [dm-devel] " Pankaj Raghav 2022-05-06 10:00 ` [PATCH v3 00/11] support non power of 2 zoned devices David Sterba 2022-05-06 10:00 ` [dm-devel] " David Sterba 2022-05-09 11:02 ` Pankaj Raghav 2022-05-09 11:02 ` [dm-devel] " Pankaj Raghav
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