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| author |   KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> | 2009-10-09 08:48:08 +0200 |
|---|---|---|
| committer |   Jens Axboe <jens.axboe@oracle.com> | 2009-10-09 08:48:08 +0200 |
| commit | 8c279598585e4992a41016bb973993ed15888cb3 (patch) | |
| tree | 47da450c888cf5b63790e37e4b7640acbc3570a2 /mm/backing-dev.c | |
| parent | cfq-iosched: avoid probable slice overrun when idling (diff) | |
| download | linux-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>
Diffstat (limited to 'mm/backing-dev.c')
0 files changed, 0 insertions, 0 deletions