diff options
| author | Yu Kuai <yukuai3@huawei.com> | 2022-10-19 20:15:15 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-10-23 18:59:17 -0600 |
| commit | a9a236d238a5e8ab2e74ca62c2c7ba5dd435af77 (patch) | |
| tree | 00317949d6b138449279ed53f8ca090375b92d8d /block/blk-wbt.h | |
| parent | b11d31ae01e6b0762b28e645ad6718a12faa8d14 (diff) | |
blk-wbt: make enable_state more accurate
Currently, if user disable wbt through sysfs, 'enable_state' will be
'WBT_STATE_ON_MANUAL', which will be confusing. Add a new state
'WBT_STATE_OFF_MANUAL' to cover that case.
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221019121518.3865235-4-yukuai1@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-wbt.h')
| -rw-r--r-- | block/blk-wbt.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/block/blk-wbt.h b/block/blk-wbt.h index 7e44eccc676d..7fe98638fff5 100644 --- a/block/blk-wbt.h +++ b/block/blk-wbt.h @@ -28,13 +28,15 @@ enum { }; /* - * Enable states. Either off, or on by default (done at init time), - * or on through manual setup in sysfs. + * If current state is WBT_STATE_ON/OFF_DEFAULT, it can be covered to any other + * state, if current state is WBT_STATE_ON/OFF_MANUAL, it can only be covered + * to WBT_STATE_OFF/ON_MANUAL. */ enum { - WBT_STATE_ON_DEFAULT = 1, - WBT_STATE_ON_MANUAL = 2, - WBT_STATE_OFF_DEFAULT + WBT_STATE_ON_DEFAULT = 1, /* on by default */ + WBT_STATE_ON_MANUAL = 2, /* on manually by sysfs */ + WBT_STATE_OFF_DEFAULT = 3, /* off by default */ + WBT_STATE_OFF_MANUAL = 4, /* off manually by sysfs */ }; struct rq_wb { |