From: Filipe Documentation update, adding references to CFQ scheduler and to another document about selecting IO Schedulers. Signed-off-by: Filipe Lautert Cc: Jens Axboe Signed-off-by: Andrew Morton --- Documentation/block/as-iosched.txt | 6 ++++-- 1 files changed, 4 insertions(+), 2 deletions(-) diff -puN Documentation/block/as-iosched.txt~io-storage-documentation-update-to-as-ioschedtxt Documentation/block/as-iosched.txt --- a/Documentation/block/as-iosched.txt~io-storage-documentation-update-to-as-ioschedtxt +++ a/Documentation/block/as-iosched.txt @@ -24,8 +24,10 @@ very similar behavior to the deadline IO Selecting IO schedulers ----------------------- To choose IO schedulers at boot time, use the argument 'elevator=deadline'. -'noop' and 'as' (the default) are also available. IO schedulers are assigned -globally at boot time only presently. +'noop', 'as' and 'cfq' (the default) are also available. IO schedulers are +assigned globally at boot time only presently. It's also possible to change +the IO scheduler for a determined device on the fly, as described in +Documentation/block/switching-sched.txt. Anticipatory IO scheduler Policies _