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authorJens Axboe <axboe@fb.com>2014-12-08 08:49:06 -0700
committerJens Axboe <axboe@fb.com>2014-12-08 08:49:06 -0700
commit080ff3511450fd73948697fef34a3cc382675b59 (patch)
tree8ce40121a12ef2d48c0c094f3b3751069490a29b /security
parentb32232073e8061b41258bff2a10a06a91677480a (diff)
downloadtalos-op-linux-080ff3511450fd73948697fef34a3cc382675b59.tar.gz
talos-op-linux-080ff3511450fd73948697fef34a3cc382675b59.zip
blk-mq: re-check for available tags after running the hardware queue
If we run out of tags and have to sleep, we run the hardware queue to kick pending IO into gear. During that run, we may have completed requests, so re-check if we have free tags before going to sleep. Signed-off-by: Jens Axboe <axboe@fb.com>
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