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authorShaohua Li <shli@fb.com>2015-01-15 17:32:25 -0800
committerJens Axboe <axboe@fb.com>2015-01-23 14:15:46 -0700
commitee1b6f7aff94019c09e73837054979063f722046 (patch)
tree79c7b943d7c6d62fec1874afd2c50964de054aa0 /block/blk-mq.c
parentbb5c3cdda37aad22996d6da2addd58cadc0436c0 (diff)
downloadlwn-ee1b6f7aff94019c09e73837054979063f722046.tar.gz
lwn-ee1b6f7aff94019c09e73837054979063f722046.zip
block: support different tag allocation policy
The libata tag allocation is using a round-robin policy. Next patch will make libata use block generic tag allocation, so let's add a policy to tag allocation. Currently two policies: FIFO (default) and round-robin. Cc: Jens Axboe <axboe@fb.com> Cc: Tejun Heo <tj@kernel.org> Cc: Christoph Hellwig <hch@infradead.org> Signed-off-by: Shaohua Li <shli@fb.com> Signed-off-by: Jens Axboe <axboe@fb.com>
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