From: Damien Le Moal <damien.lemoal@opensource.wdc.com> To: Pankaj Raghav <p.raghav@samsung.com>, hch@lst.de, snitzer@redhat.com, axboe@kernel.dk Cc: bvanassche@acm.org, pankydev8@gmail.com, gost.dev@samsung.com, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, jiangbo.365@bytedance.com, linux-block@vger.kernel.org, dm-devel@redhat.com, jonathan.derrick@linux.dev, Johannes.Thumshirn@wdc.com, dsterba@suse.com, jaegeuk@kernel.org Subject: Re: [dm-devel] [PATCH v7 12/13] dm: call dm_zone_endio after the target endio callback for zoned devices Date: Wed, 15 Jun 2022 20:01:36 +0900 [thread overview] Message-ID: <f7b586a3-5370-f3b9-72dc-f9bea0b63f1f@opensource.wdc.com> (raw) In-Reply-To: <20220615101920.329421-13-p.raghav@samsung.com> On 6/15/22 19:19, Pankaj Raghav wrote: > dm_zone_endio() updates the bi_sector of orig bio for zoned devices that > uses either native append or append emulation and it is called before the > endio of the target. But target endio can still update the clone bio > after dm_zone_endio is called, thereby, the orig bio does not contain > the updated information anymore. Call dm_zone_endio for zoned devices > after calling the target's endio function > > Signed-off-by: Pankaj Raghav <p.raghav@samsung.com> > --- > @Damien and @Hannes: I couldn't come up with a testcase that uses endio callback and > zone append or append emulation for zoned devices to test for > regression in this change. It would be great if you can suggest > something. This change is required for the npo2 target as we update the > clone bio sector in the endio callback function and the orig bio should > be updated only after the endio callback for zone appends. Running zonefs tests on top of dm-crypt will exercise DM zone append emulation. > > drivers/md/dm.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/md/dm.c b/drivers/md/dm.c > index 3f17fe1de..3a74e1038 100644 > --- a/drivers/md/dm.c > +++ b/drivers/md/dm.c > @@ -1025,10 +1025,6 @@ static void clone_endio(struct bio *bio) > disable_write_zeroes(md); > } > > - if (static_branch_unlikely(&zoned_enabled) && > - unlikely(blk_queue_is_zoned(bdev_get_queue(bio->bi_bdev)))) > - dm_zone_endio(io, bio); > - > if (endio) { > int r = endio(ti, bio, &error); > switch (r) { > @@ -1057,6 +1053,10 @@ static void clone_endio(struct bio *bio) > } > } > > + if (static_branch_unlikely(&zoned_enabled) && > + unlikely(blk_queue_is_zoned(bdev_get_queue(bio->bi_bdev)))) blk_queue_is_zoned(bdev_get_queue(bio->bi_bdev))) -> bdev_is_zoned(bio->bi_bdev) > + dm_zone_endio(io, bio); > + > if (static_branch_unlikely(&swap_bios_enabled) && > unlikely(swap_bios_limit(ti, bio))) > up(&md->swap_bios_semaphore); -- Damien Le Moal Western Digital Research -- dm-devel mailing list dm-devel@redhat.com https://listman.redhat.com/mailman/listinfo/dm-devel
WARNING: multiple messages have this Message-ID (diff)
From: Damien Le Moal <damien.lemoal@opensource.wdc.com> To: Pankaj Raghav <p.raghav@samsung.com>, hch@lst.de, snitzer@redhat.com, axboe@kernel.dk Cc: bvanassche@acm.org, pankydev8@gmail.com, gost.dev@samsung.com, jiangbo.365@bytedance.com, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, dm-devel@redhat.com, jonathan.derrick@linux.dev, Johannes.Thumshirn@wdc.com, dsterba@suse.com, jaegeuk@kernel.org Subject: Re: [dm-devel] [PATCH v7 12/13] dm: call dm_zone_endio after the target endio callback for zoned devices Date: Wed, 15 Jun 2022 20:01:36 +0900 [thread overview] Message-ID: <f7b586a3-5370-f3b9-72dc-f9bea0b63f1f@opensource.wdc.com> (raw) In-Reply-To: <20220615101920.329421-13-p.raghav@samsung.com> On 6/15/22 19:19, Pankaj Raghav wrote: > dm_zone_endio() updates the bi_sector of orig bio for zoned devices that > uses either native append or append emulation and it is called before the > endio of the target. But target endio can still update the clone bio > after dm_zone_endio is called, thereby, the orig bio does not contain > the updated information anymore. Call dm_zone_endio for zoned devices > after calling the target's endio function > > Signed-off-by: Pankaj Raghav <p.raghav@samsung.com> > --- > @Damien and @Hannes: I couldn't come up with a testcase that uses endio callback and > zone append or append emulation for zoned devices to test for > regression in this change. It would be great if you can suggest > something. This change is required for the npo2 target as we update the > clone bio sector in the endio callback function and the orig bio should > be updated only after the endio callback for zone appends. Running zonefs tests on top of dm-crypt will exercise DM zone append emulation. > > drivers/md/dm.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/md/dm.c b/drivers/md/dm.c > index 3f17fe1de..3a74e1038 100644 > --- a/drivers/md/dm.c > +++ b/drivers/md/dm.c > @@ -1025,10 +1025,6 @@ static void clone_endio(struct bio *bio) > disable_write_zeroes(md); > } > > - if (static_branch_unlikely(&zoned_enabled) && > - unlikely(blk_queue_is_zoned(bdev_get_queue(bio->bi_bdev)))) > - dm_zone_endio(io, bio); > - > if (endio) { > int r = endio(ti, bio, &error); > switch (r) { > @@ -1057,6 +1053,10 @@ static void clone_endio(struct bio *bio) > } > } > > + if (static_branch_unlikely(&zoned_enabled) && > + unlikely(blk_queue_is_zoned(bdev_get_queue(bio->bi_bdev)))) blk_queue_is_zoned(bdev_get_queue(bio->bi_bdev))) -> bdev_is_zoned(bio->bi_bdev) > + dm_zone_endio(io, bio); > + > if (static_branch_unlikely(&swap_bios_enabled) && > unlikely(swap_bios_limit(ti, bio))) > up(&md->swap_bios_semaphore); -- Damien Le Moal Western Digital Research
next prev parent reply other threads:[~2022-06-15 11:01 UTC|newest] Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20220615101924eucas1p27fbce623c0e1b3097169bf23dd6266d8@eucas1p2.samsung.com> 2022-06-15 10:19 ` [PATCH v7 00/13] support non power of 2 zoned device Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220615101927eucas1p17220c7a36f69f59ff8ddd560b42967ec@eucas1p1.samsung.com> 2022-06-15 10:19 ` [PATCH v7 01/13] block: make blkdev_nr_zones and blk_queue_zone_no generic for npo2 zsze Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav 2022-06-15 20:18 ` Bart Van Assche 2022-06-15 20:18 ` Bart Van Assche [not found] ` <CGME20220615101931eucas1p15ed09ae433a2c378b599e9086130d8eb@eucas1p1.samsung.com> 2022-06-15 10:19 ` [PATCH v7 02/13] block: allow blk-zoned devices to have non-power-of-2 zone size Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav 2022-06-15 20:28 ` Bart Van Assche 2022-06-15 20:28 ` Bart Van Assche 2022-06-16 10:09 ` Pankaj Raghav 2022-06-16 10:09 ` Pankaj Raghav 2022-06-16 16:04 ` Luis Chamberlain 2022-06-16 16:04 ` Luis Chamberlain 2022-06-16 23:30 ` Damien Le Moal 2022-06-16 23:30 ` Damien Le Moal [not found] ` <CGME20220615101935eucas1p26a7bc245d88a89312158d7a265f64aef@eucas1p2.samsung.com> 2022-06-15 10:19 ` [PATCH v7 03/13] nvme: zns: Allow ZNS drives that have non-power_of_2 " Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220615101938eucas1p26ab159a1ffd0fa5a16d7f202ba7206e7@eucas1p2.samsung.com> 2022-06-15 10:19 ` [PATCH v7 04/13] nvmet: Allow ZNS target to support non-power_of_2 zone sizes Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220615101941eucas1p25e1c27b363e6b288b848521298e31705@eucas1p2.samsung.com> 2022-06-15 10:19 ` [PATCH v7 05/13] null_blk: allow non power of 2 zoned devices Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220615101945eucas1p16fa264e81d9b6027ff131dd311ed91e2@eucas1p1.samsung.com> 2022-06-15 10:19 ` [PATCH v7 06/13] null_blk: use zone_size_sects_shift for " Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav 2022-06-15 11:56 ` Damien Le Moal 2022-06-15 11:56 ` [dm-devel] " Damien Le Moal [not found] ` <CGME20220615101948eucas1p2d8d801735c39b25256a019134adb0c6f@eucas1p2.samsung.com> 2022-06-15 10:19 ` [PATCH v7 07/13] zonefs: allow non " Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220615101951eucas1p238eb45e563bd9645af81bf16c56d98ec@eucas1p2.samsung.com> 2022-06-15 10:19 ` [PATCH v7 08/13] dm-zoned: ensure only power of 2 zone sizes are allowed Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav [not found] ` <CGME20220615101955eucas1p19b9d42ead7331f69f7dad1ec100312c2@eucas1p1.samsung.com> 2022-06-15 10:19 ` [dm-devel] [PATCH v7 09/13] dm-zone: use generic helpers to calculate offset from zone start Pankaj Raghav 2022-06-15 10:19 ` Pankaj Raghav [not found] ` <CGME20220615102000eucas1p27720aaa3c309327b2b9a33c5f840f498@eucas1p2.samsung.com> 2022-06-15 10:19 ` [dm-devel] [PATCH v7 10/13] dm-table: use bdev_is_zone_start helper in device_area_is_invalid() Pankaj Raghav 2022-06-15 10:19 ` Pankaj Raghav 2022-06-15 11:53 ` Damien Le Moal 2022-06-15 11:53 ` [dm-devel] " Damien Le Moal 2022-06-16 9:55 ` Pankaj Raghav 2022-06-16 9:55 ` [dm-devel] " Pankaj Raghav 2022-06-16 23:29 ` Damien Le Moal 2022-06-16 23:29 ` [dm-devel] " Damien Le Moal [not found] ` <CGME20220615102004eucas1p1e458ea097d381058b16fc6daa3eec998@eucas1p1.samsung.com> 2022-06-15 10:19 ` [dm-devel] [PATCH v7 11/13] dm-table: allow non po2 zoned devices Pankaj Raghav 2022-06-15 10:19 ` Pankaj Raghav [not found] ` <CGME20220615102007eucas1p1106f9520e2a86beb3792107dffd8071b@eucas1p1.samsung.com> 2022-06-15 10:19 ` [dm-devel] [PATCH v7 12/13] dm: call dm_zone_endio after the target endio callback for " Pankaj Raghav 2022-06-15 10:19 ` Pankaj Raghav 2022-06-15 11:01 ` Damien Le Moal [this message] 2022-06-15 11:01 ` [dm-devel] " Damien Le Moal 2022-06-16 12:24 ` Pankaj Raghav 2022-06-16 12:24 ` Pankaj Raghav 2022-06-16 23:33 ` Damien Le Moal 2022-06-16 23:33 ` Damien Le Moal [not found] ` <CGME20220615102011eucas1p220368db4a186181b1927dea50a79e5d4@eucas1p2.samsung.com> 2022-06-15 10:19 ` [PATCH v7 13/13] dm: add non power of 2 zoned target Pankaj Raghav 2022-06-15 10:19 ` [dm-devel] " Pankaj Raghav 2022-06-15 11:49 ` Damien Le Moal 2022-06-15 11:49 ` [dm-devel] " Damien Le Moal 2022-06-16 16:12 ` Pankaj Raghav 2022-06-16 16:12 ` [dm-devel] " Pankaj Raghav 2022-06-16 23:49 ` Damien Le Moal 2022-06-16 23:49 ` [dm-devel] " Damien Le Moal 2022-06-17 5:45 ` Pankaj Raghav 2022-06-17 5:45 ` [dm-devel] " Pankaj Raghav 2022-06-17 6:12 ` Damien Le Moal 2022-06-17 6:12 ` [dm-devel] " Damien Le Moal 2022-06-17 6:40 ` Pankaj Raghav 2022-06-17 6:40 ` [dm-devel] " Pankaj Raghav 2022-06-17 6:56 ` Damien Le Moal 2022-06-17 6:56 ` [dm-devel] " Damien Le Moal 2022-06-17 8:03 ` Pankaj Raghav 2022-06-17 8:03 ` [dm-devel] " Pankaj Raghav 2022-06-15 14:19 ` kernel test robot 2022-06-15 14:19 ` [dm-devel] " kernel test robot 2022-06-15 19:54 ` Randy Dunlap 2022-06-15 19:54 ` [dm-devel] " Randy Dunlap 2022-06-16 10:28 ` Pankaj Raghav 2022-06-16 10:28 ` [dm-devel] " Pankaj Raghav
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