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authorDivyesh Shah <dpshah@google.com>2010-03-25 15:45:57 +0100
committerJens Axboe <jens.axboe@oracle.com>2010-03-25 15:46:38 +0100
commit39c01b219fd30c74869b6fc8749f7900f04e9ef6 (patch)
tree7ce59210c28e2b53daf2957174d3ae164701b181 /drivers/char/nvram.c
parentcfq-iosched: Add additional blktrace log messages in CFQ for easier debugging (diff)
downloadlinux-39c01b219fd30c74869b6fc8749f7900f04e9ef6.tar.xz
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cfq-iosched: Do not merge queues of BE and IDLE classes
Even if they are found to be co-operating. The prio_trees do not have any IDLE cfqqs on them. cfq_close_cooperator() is called from cfq_select_queue() and cfq_completed_request(). The latter ensures that the close cooperator code does not get invoked if the current cfqq is of class IDLE but the former doesn't seem to have any such checks. So an IDLE cfqq may get merged with a BE cfqq from the same group which should be avoided. Signed-off-by: Divyesh Shah<dpshah@google.com> Acked-by: Vivek Goyal <vgoyal@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/char/nvram.c')
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