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authorOleg Nesterov <oleg@tv-sign.ru>2007-11-07 13:51:35 +0100
committerJens Axboe <jens.axboe@oracle.com>2007-11-07 13:51:35 +0100
commit0e7be9edb9134f833278c381b6feabb54b875208 (patch)
treea4eca4110f1b672f78191c8a8f92086b1b6ade7a /fs/nfsd
parentcfq: fix IOPRIO_CLASS_IDLE delays (diff)
downloadlinux-0e7be9edb9134f833278c381b6feabb54b875208.tar.xz
linux-0e7be9edb9134f833278c381b6feabb54b875208.zip
cfq_idle_class_timer: add paranoid checks for jiffies overflow
In theory, if the queue was idle long enough, cfq_idle_class_timer may have a false (and very long) timeout because jiffies can wrap into the past wrt ->last_end_request. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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