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authorChristoph Hellwig <hch@lst.de>2016-09-14 16:18:53 +0200
committerJens Axboe <axboe@fb.com>2016-09-15 08:42:03 -0600
commitbdd17e75cd97c5c39feee409890a91d0396640fe (patch)
treea7b6b01aa305d466e83255caa08670391c294b33 /block/blk-flush.c
parent4e68a011428af3211facd932b4003b3fa3ef4faa (diff)
downloadlinux-0-day-bdd17e75cd97c5c39feee409890a91d0396640fe.tar.gz
blk-mq: only allocate a single mq_map per tag_set
The mapping is identical for all queues in a tag_set, so stop wasting memory for building multiple. Note that for now I've kept the mq_map pointer in the request_queue, but we'll need to investigate if we can remove it without suffering too much from the additional pointer chasing. The same would apply to the mq_ops pointer as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'block/blk-flush.c')
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