diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-20 08:12:49 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-07-20 15:38:52 -0600 |
| commit | 3093a479727be194996dbc40f803711af5877be4 (patch) | |
| tree | 7b85597ee0028fc4cc5962eb416f21a09da39f90 | |
| parent | 4f43d648078a754aefe6a4de233ebb6e4d192aa6 (diff) | |
| download | lwn-3093a479727be194996dbc40f803711af5877be4.tar.gz lwn-3093a479727be194996dbc40f803711af5877be4.zip | |
block: inherit the zoned characteristics in blk_stack_limits
Lift the code from device mapper into blk_stack_limits to inherity
the stacking limitations. This ensures we do the right thing for
all stacked zoned block devices.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com>
Tested-by: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/blk-settings.c | 1 | ||||
| -rw-r--r-- | drivers/md/dm-table.c | 19 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 9 |
3 files changed, 7 insertions, 22 deletions
diff --git a/block/blk-settings.c b/block/blk-settings.c index 9a2c23cd9700..9cddbd736474 100644 --- a/block/blk-settings.c +++ b/block/blk-settings.c @@ -609,6 +609,7 @@ int blk_stack_limits(struct queue_limits *t, struct queue_limits *b, t->chunk_sectors = min_not_zero(t->chunk_sectors, b->chunk_sectors); + t->zoned = max(t->zoned, b->zoned); return ret; } EXPORT_SYMBOL(blk_stack_limits); diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c index 0ea5b7367179..ec5364133cef 100644 --- a/drivers/md/dm-table.c +++ b/drivers/md/dm-table.c @@ -467,9 +467,6 @@ static int dm_set_device_limits(struct dm_target *ti, struct dm_dev *dev, q->limits.logical_block_size, q->limits.alignment_offset, (unsigned long long) start << SECTOR_SHIFT); - - limits->zoned = blk_queue_zoned_model(q); - return 0; } @@ -1528,22 +1525,6 @@ combine_limits: dm_device_name(table->md), (unsigned long long) ti->begin, (unsigned long long) ti->len); - - /* - * FIXME: this should likely be moved to blk_stack_limits(), would - * also eliminate limits->zoned stacking hack in dm_set_device_limits() - */ - if (limits->zoned == BLK_ZONED_NONE && ti_limits.zoned != BLK_ZONED_NONE) { - /* - * By default, the stacked limits zoned model is set to - * BLK_ZONED_NONE in blk_set_stacking_limits(). Update - * this model using the first target model reported - * that is not BLK_ZONED_NONE. This will be either the - * first target device zoned model or the model reported - * by the target .io_hints. - */ - limits->zoned = ti_limits.zoned; - } } /* diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 63078944909c..9e331a1eb35f 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -306,11 +306,14 @@ enum blk_queue_state { /* * Zoned block device models (zoned limit). + * + * Note: This needs to be ordered from the least to the most severe + * restrictions for the inheritance in blk_stack_limits() to work. */ enum blk_zoned_model { - BLK_ZONED_NONE, /* Regular block device */ - BLK_ZONED_HA, /* Host-aware zoned block device */ - BLK_ZONED_HM, /* Host-managed zoned block device */ + BLK_ZONED_NONE = 0, /* Regular block device */ + BLK_ZONED_HA, /* Host-aware zoned block device */ + BLK_ZONED_HM, /* Host-managed zoned block device */ }; struct queue_limits { |