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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2009-10-09 08:48:08 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-10-09 08:48:08 +0200
commit8c279598585e4992a41016bb973993ed15888cb3 (patch)
tree47da450c888cf5b63790e37e4b7640acbc3570a2 /mm/backing-dev.c
parentcfq-iosched: avoid probable slice overrun when idling (diff)
downloadlinux-dev-8c279598585e4992a41016bb973993ed15888cb3.tar.xz
linux-dev-8c279598585e4992a41016bb973993ed15888cb3.zip
elv_iosched_store(): fix strstrip() misuse
elv_iosched_store() ignore the return value of strstrip(). It makes small inconsistent behavior. This patch fixes it. <before> ==================================== # cd /sys/block/{blockdev}/queue case1: # echo "anticipatory" > scheduler # cat scheduler noop [anticipatory] deadline cfq case2: # echo "anticipatory " > scheduler # cat scheduler noop [anticipatory] deadline cfq case3: # echo " anticipatory" > scheduler bash: echo: write error: Invalid argument <after> ==================================== # cd /sys/block/{blockdev}/queue case1: # echo "anticipatory" > scheduler # cat scheduler noop [anticipatory] deadline cfq case2: # echo "anticipatory " > scheduler # cat scheduler noop [anticipatory] deadline cfq case3: # echo " anticipatory" > scheduler noop [anticipatory] deadline cfq Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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