null_blk: add configfs variable shared_tags

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Allow setting shared_tags through configfs, which could only be set as a
module parameter. For that purpose, delay tag_set initialization from
null_init() to null_add_dev(). Refer tag_set.ops as the flag to check if
tag_set is initialized or not.

The following parameters can not be set through configfs yet:

    timeout
    requeue
    init_hctx

Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20240130042134.2463659-1-shinichiro.kawasaki@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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This commit is contained in:

Shin'ichiro Kawasaki 2024-01-30 13:21:34 +09:00 • committed by Jens Axboe

parent 48ff13a618

commit 14509b748f

2 changed files with 21 additions and 18 deletions

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38

drivers/block/null_blk/main.c

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1

drivers/block/null_blk/null_blk.h

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