On 2012-07-16 13:48 NeilBrown <neilb@xxxxxxx> Wrote:
>On Fri, 13 Jul 2012 19:13:35 +0800 majianpeng <majianpeng@xxxxxxxxx> wrote:
>
>> Because bios will merge at block-layer,so bios-error may caused by other
>> bio which be merged into to the same request.
>> Using this flag,it will find exactly error-sector and not do redundant
>> operation like re-write and re-read.
>>
>> V0->V1:Using REQ_FLUSH instead REQ_NOMERGE avoid bio merging at block
>> layer.
>>
>> Signed-off-by: Jianpeng Ma <majianpeng@xxxxxxxxx>
>> ---
>> drivers/md/raid5.c | 14 ++++++++++++--
>> drivers/md/raid5.h | 1 +
>> 2 files changed, 13 insertions(+), 2 deletions(-)
>>
[snip]
>
>Thanks, I've applied this.
>
>We should probably do a similar thing in fix_read_error and
>fix_sync_read_error in RAID1 and RAID10...
>
Thanks, I'll do it.
>Thanks,
>NeilBrown
>
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