6.10-stable review patch. If anyone has any objections, please let me know.
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From: Damien Le Moal dlemoal@kernel.org
[ Upstream commit 7f91ccd8a608dbe39b97a6e43d635378d493f77e ]
dm_revalidate_zones() is called from dm_set_zone_restrictions() when the mapped device queue limits are not yet set. However, dm_revalidate_zones() calls blk_revalidate_disk_zones() and this function consults and modifies the mapped device queue limits. Thus, currently, blk_revalidate_disk_zones() operates on limits that are not yet initialized.
Fix this by moving the call to dm_revalidate_zones() out of dm_set_zone_restrictions() and into dm_table_set_restrictions() after executing queue_limits_set().
To further cleanup dm_set_zones_restrictions(), the message about the type of zone append (native or emulated) is also moved inside dm_revalidate_zones().
Fixes: 1c0e720228ad ("dm: use queue_limits_set") Signed-off-by: Damien Le Moal dlemoal@kernel.org Reviewed-by: Christoph Hellwig hch@lst.de Reviewed-by: Benjamin Marzinski bmarzins@redhat.com Reviewed-by: Niklas Cassel cassel@kernel.org Link: https://lore.kernel.org/r/20240611023639.89277-3-dlemoal@kernel.org Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/md/dm-table.c | 15 +++++++++++---- drivers/md/dm-zone.c | 25 ++++++++++--------------- drivers/md/dm.h | 1 + 3 files changed, 22 insertions(+), 19 deletions(-)
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index b2d5246cff210..2fc847af254de 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -2028,10 +2028,7 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, dm_table_any_dev_attr(t, device_is_not_random, NULL)) blk_queue_flag_clear(QUEUE_FLAG_ADD_RANDOM, q);
- /* - * For a zoned target, setup the zones related queue attributes - * and resources necessary for zone append emulation if necessary. - */ + /* For a zoned table, setup the zone related queue attributes. */ if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) && limits->zoned) { r = dm_set_zones_restrictions(t, q, limits); if (r) @@ -2042,6 +2039,16 @@ int dm_table_set_restrictions(struct dm_table *t, struct request_queue *q, if (r) return r;
+ /* + * Now that the limits are set, check the zones mapped by the table + * and setup the resources for zone append emulation if necessary. + */ + if (IS_ENABLED(CONFIG_BLK_DEV_ZONED) && limits->zoned) { + r = dm_revalidate_zones(t, q); + if (r) + return r; + } + dm_update_crypto_profile(q, t);
/* diff --git a/drivers/md/dm-zone.c b/drivers/md/dm-zone.c index 5d66d916730ef..75d0019a0649d 100644 --- a/drivers/md/dm-zone.c +++ b/drivers/md/dm-zone.c @@ -166,14 +166,22 @@ static int dm_check_zoned_cb(struct blk_zone *zone, unsigned int idx, * blk_revalidate_disk_zones() function here as the mapped device is suspended * (this is called from __bind() context). */ -static int dm_revalidate_zones(struct mapped_device *md, struct dm_table *t) +int dm_revalidate_zones(struct dm_table *t, struct request_queue *q) { + struct mapped_device *md = t->md; struct gendisk *disk = md->disk; int ret;
+ if (!get_capacity(disk)) + return 0; + /* Revalidate only if something changed. */ - if (!disk->nr_zones || disk->nr_zones != md->nr_zones) + if (!disk->nr_zones || disk->nr_zones != md->nr_zones) { + DMINFO("%s using %s zone append", + disk->disk_name, + queue_emulates_zone_append(q) ? "emulated" : "native"); md->nr_zones = 0; + }
if (md->nr_zones) return 0; @@ -240,9 +248,6 @@ int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q, lim->max_zone_append_sectors = 0; }
- if (!get_capacity(md->disk)) - return 0; - /* * Count conventional zones to check that the mapped device will indeed * have sequential write required zones. @@ -269,16 +274,6 @@ int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q, return 0; }
- if (!md->disk->nr_zones) { - DMINFO("%s using %s zone append", - md->disk->disk_name, - queue_emulates_zone_append(q) ? "emulated" : "native"); - } - - ret = dm_revalidate_zones(md, t); - if (ret < 0) - return ret; - if (!static_key_enabled(&zoned_enabled.key)) static_branch_enable(&zoned_enabled); return 0; diff --git a/drivers/md/dm.h b/drivers/md/dm.h index 53ef8207fe2c1..c984ecb64b1e8 100644 --- a/drivers/md/dm.h +++ b/drivers/md/dm.h @@ -103,6 +103,7 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t); */ int dm_set_zones_restrictions(struct dm_table *t, struct request_queue *q, struct queue_limits *lim); +int dm_revalidate_zones(struct dm_table *t, struct request_queue *q); void dm_zone_endio(struct dm_io *io, struct bio *clone); #ifdef CONFIG_BLK_DEV_ZONED int dm_blk_report_zones(struct gendisk *disk, sector_t sector,