From: Pankaj Raghav <p.raghav@samsung.com> To: jaegeuk@kernel.org, hare@suse.de, dsterba@suse.com, axboe@kernel.dk, hch@lst.de, damien.lemoal@opensource.wdc.com, 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, Pankaj Raghav <p.raghav@samsung.com>, Luis Chamberlain <mcgrof@kernel.org> Subject: [PATCH v3 08/11] btrfs: zoned: relax the alignment constraint for zoned devices Date: Fri, 6 May 2022 10:11:02 +0200 [thread overview] Message-ID: <20220506081105.29134-9-p.raghav@samsung.com> (raw) In-Reply-To: <20220506081105.29134-1-p.raghav@samsung.com> Checks were in place to return error when a non power-of-2 zoned devices is detected. Remove those checks as non power-of-2 zoned devices are now supported. Relax the zone size constraint to align with a sane default of 1MB. This 1M default has been chosen as the minimum alignment requirement for zone sizes to make sure zones align with sectorsize in different architectures. Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Pankaj Raghav <p.raghav@samsung.com> --- fs/btrfs/zoned.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index 3023c871e..a6b15fbe1 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -54,6 +54,13 @@ */ #define BTRFS_MAX_ZONE_SIZE SZ_8G +/* + * A minimum alignment of 1MB is chosen for zoned devices as their zone sizes + * can be non power of 2. This is to make sure the zones correctly align to the + * sectorsize. + */ +#define BTRFS_ZONED_MIN_ALIGN_SECTORS ((u64)SZ_1M >> SECTOR_SHIFT) + #define SUPER_INFO_SECTORS ((u64)BTRFS_SUPER_INFO_SIZE >> SECTOR_SHIFT) static inline bool sb_zone_is_full(const struct blk_zone *zone) @@ -394,8 +401,8 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache) zone_sectors = bdev_zone_sectors(bdev); } - /* Check if it's power of 2 (see is_power_of_2) */ - ASSERT(zone_sectors != 0 && (zone_sectors & (zone_sectors - 1)) == 0); + ASSERT(zone_sectors != 0 && + IS_ALIGNED(zone_sectors, BTRFS_ZONED_MIN_ALIGN_SECTORS)); zone_info->zone_size = zone_sectors << SECTOR_SHIFT; /* We reject devices with a zone size larger than 8GB */ @@ -834,9 +841,11 @@ int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw, ASSERT(rw == READ || rw == WRITE); - if (!is_power_of_2(bdev_zone_sectors(bdev))) - return -EINVAL; nr_sectors = bdev_nr_sectors(bdev); + + if (!IS_ALIGNED(nr_sectors, BTRFS_ZONED_MIN_ALIGN_SECTORS)) + return -EINVAL; + nr_zones = bdev_zone_no(bdev, nr_sectors); sb_zone = sb_zone_number(bdev, mirror); -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Pankaj Raghav <p.raghav@samsung.com> To: jaegeuk@kernel.org, hare@suse.de, dsterba@suse.com, axboe@kernel.dk, hch@lst.de, damien.lemoal@opensource.wdc.com, snitzer@kernel.org Cc: jiangbo.365@bytedance.com, linux-nvme@lists.infradead.org, Chris Mason <clm@fb.com>, dm-devel@redhat.com, Alasdair Kergon <agk@redhat.com>, Naohiro Aota <naohiro.aota@wdc.com>, bvanassche@acm.org, gost.dev@samsung.com, jonathan.derrick@linux.dev, Pankaj Raghav <p.raghav@samsung.com>, Chaitanya Kulkarni <kch@nvidia.com>, Josef Bacik <josef@toxicpanda.com>, linux-block@vger.kernel.org, Keith Busch <kbusch@kernel.org>, matias.bjorling@wdc.com, Sagi Grimberg <sagi@grimberg.me>, Jens Axboe <axboe@fb.com>, linux-kernel@vger.kernel.org, Luis Chamberlain <mcgrof@kernel.org>, linux-fsdevel@vger.kernel.org, Johannes Thumshirn <jth@kernel.org>, linux-btrfs@vger.kernel.org Subject: [dm-devel] [PATCH v3 08/11] btrfs: zoned: relax the alignment constraint for zoned devices Date: Fri, 6 May 2022 10:11:02 +0200 [thread overview] Message-ID: <20220506081105.29134-9-p.raghav@samsung.com> (raw) In-Reply-To: <20220506081105.29134-1-p.raghav@samsung.com> Checks were in place to return error when a non power-of-2 zoned devices is detected. Remove those checks as non power-of-2 zoned devices are now supported. Relax the zone size constraint to align with a sane default of 1MB. This 1M default has been chosen as the minimum alignment requirement for zone sizes to make sure zones align with sectorsize in different architectures. Reviewed-by: Luis Chamberlain <mcgrof@kernel.org> Signed-off-by: Pankaj Raghav <p.raghav@samsung.com> --- fs/btrfs/zoned.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/zoned.c b/fs/btrfs/zoned.c index 3023c871e..a6b15fbe1 100644 --- a/fs/btrfs/zoned.c +++ b/fs/btrfs/zoned.c @@ -54,6 +54,13 @@ */ #define BTRFS_MAX_ZONE_SIZE SZ_8G +/* + * A minimum alignment of 1MB is chosen for zoned devices as their zone sizes + * can be non power of 2. This is to make sure the zones correctly align to the + * sectorsize. + */ +#define BTRFS_ZONED_MIN_ALIGN_SECTORS ((u64)SZ_1M >> SECTOR_SHIFT) + #define SUPER_INFO_SECTORS ((u64)BTRFS_SUPER_INFO_SIZE >> SECTOR_SHIFT) static inline bool sb_zone_is_full(const struct blk_zone *zone) @@ -394,8 +401,8 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache) zone_sectors = bdev_zone_sectors(bdev); } - /* Check if it's power of 2 (see is_power_of_2) */ - ASSERT(zone_sectors != 0 && (zone_sectors & (zone_sectors - 1)) == 0); + ASSERT(zone_sectors != 0 && + IS_ALIGNED(zone_sectors, BTRFS_ZONED_MIN_ALIGN_SECTORS)); zone_info->zone_size = zone_sectors << SECTOR_SHIFT; /* We reject devices with a zone size larger than 8GB */ @@ -834,9 +841,11 @@ int btrfs_sb_log_location_bdev(struct block_device *bdev, int mirror, int rw, ASSERT(rw == READ || rw == WRITE); - if (!is_power_of_2(bdev_zone_sectors(bdev))) - return -EINVAL; nr_sectors = bdev_nr_sectors(bdev); + + if (!IS_ALIGNED(nr_sectors, BTRFS_ZONED_MIN_ALIGN_SECTORS)) + return -EINVAL; + nr_zones = bdev_zone_no(bdev, nr_sectors); sb_zone = sb_zone_number(bdev, mirror); -- 2.25.1 -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
next prev parent reply other threads:[~2022-05-06 8:11 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 ` Pankaj Raghav [this message] 2022-05-06 8:11 ` [dm-devel] [PATCH v3 08/11] btrfs: zoned: relax the alignment constraint for " 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 2022-05-09 11:06 ` [dm-devel] " 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
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20220506081105.29134-9-p.raghav@samsung.com \ --to=p.raghav@samsung.com \ --cc=agk@redhat.com \ --cc=axboe@fb.com \ --cc=axboe@kernel.dk \ --cc=bvanassche@acm.org \ --cc=clm@fb.com \ --cc=damien.lemoal@opensource.wdc.com \ --cc=dm-devel@redhat.com \ --cc=dsterba@suse.com \ --cc=gost.dev@samsung.com \ --cc=hare@suse.de \ --cc=hch@lst.de \ --cc=jaegeuk@kernel.org \ --cc=jiangbo.365@bytedance.com \ --cc=jonathan.derrick@linux.dev \ --cc=josef@toxicpanda.com \ --cc=jth@kernel.org \ --cc=kbusch@kernel.org \ --cc=kch@nvidia.com \ --cc=linux-block@vger.kernel.org \ --cc=linux-btrfs@vger.kernel.org \ --cc=linux-fsdevel@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-nvme@lists.infradead.org \ --cc=matias.bjorling@wdc.com \ --cc=mcgrof@kernel.org \ --cc=naohiro.aota@wdc.com \ --cc=sagi@grimberg.me \ --cc=snitzer@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.