blk-mq: Reduce blk_mq_hw_ctx size

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Since the srcu structure is rather large (184 bytes on an x86-64
system with kernel debugging disabled), only allocate it if needed.

Reported-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

...

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Bart Van Assche 2017-06-20 11:15:38 -07:00 • committed by Jens Axboe

parent efbeccdb59

commit 0731967877

2 changed files with 25 additions and 10 deletions

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30

block/blk-mq.c

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5

include/linux/blk-mq.h

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