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block: move the poll flag to queue_limits

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Move the poll flag into the queue_limits feature field so that it can
be set atomically with the queue frozen.

Stacking drivers are simplified in that they now can simply set the
flag, and blk_stack_limits will clear it when the features is not
supported by any of the underlying devices.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20240617060532.127975-22-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig
2024-06-17 08:04:48 +02:00
committed by Jens Axboe
parent f467fee48d
commit 8023e144f9
8 changed files with 45 additions and 76 deletions
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1
block/blk-mq-debugfs.c
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@@ -87,7 +87,6 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(NOXMERGES),
QUEUE_FLAG_NAME(SAME_FORCE),
QUEUE_FLAG_NAME(INIT_DONE),
QUEUE_FLAG_NAME(POLL),
QUEUE_FLAG_NAME(STATS),
QUEUE_FLAG_NAME(REGISTERED),
QUEUE_FLAG_NAME(QUIESCED),