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author | Gui Jianfeng <guijianfeng@cn.fujitsu.com> | 2010-04-13 16:05:49 +0800 |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2010-04-13 10:14:20 +0200 |
commit | 34d0f179d6dd711d3fc13c0820a456c59aae8048 (patch) | |
tree | 0e3d533e16cd7d99b0d28ec13353862f1da96dfd /Documentation | |
parent | 812df48d127365ffd0869aa139738f572a86759c (diff) | |
download | linux-stable-34d0f179d6dd711d3fc13c0820a456c59aae8048.tar.gz linux-stable-34d0f179d6dd711d3fc13c0820a456c59aae8048.tar.bz2 linux-stable-34d0f179d6dd711d3fc13c0820a456c59aae8048.zip |
io-controller: Add a new interface "weight_device" for IO-Controller
Currently, IO Controller makes use of blkio.weight to assign weight for
all devices. Here a new user interface "blkio.weight_device" is introduced to
assign different weights for different devices. blkio.weight becomes the
default value for devices which are not configured by "blkio.weight_device"
You can use the following format to assigned specific weight for a given
device:
#echo "major:minor weight" > blkio.weight_device
major:minor represents device number.
And you can remove weight for a given device as following:
#echo "major:minor 0" > blkio.weight_device
V1->V2 changes:
- use user interface "weight_device" instead of "policy" suggested by Vivek
- rename some struct suggested by Vivek
- rebase to 2.6-block "for-linus" branch
- remove an useless list_empty check pointed out by Li Zefan
- some trivial typo fix
V2->V3 changes:
- Move policy_*_node() functions up to get rid of forward declarations
- rename related functions by adding prefix "blkio_"
Signed-off-by: Gui Jianfeng <guijianfeng@cn.fujitsu.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions