Re: [PATCH V2 2/8] blk-mq: introduce BLK_MQ_F_GLOBAL_TAGS

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To: Jens Axboe <axboe@xxxxxxxxx>, Ming Lei <ming.lei@xxxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, Christoph Hellwig <hch@xxxxxxxxxxxxx>, Mike Snitzer <snitzer@xxxxxxxxxx>
Subject: Re: [PATCH V2 2/8] blk-mq: introduce BLK_MQ_F_GLOBAL_TAGS
From: Bart Van Assche <bart.vanassche@xxxxxxx>
Date: Wed, 7 Feb 2018 08:09:21 -0800
Cc: linux-scsi@xxxxxxxxxxxxxxx, Hannes Reinecke <hare@xxxxxxx>, Arun Easi <arun.easi@xxxxxxxxxx>, Omar Sandoval <osandov@xxxxxx>, "Martin K . Petersen" <martin.petersen@xxxxxxxxxx>, James Bottomley <james.bottomley@xxxxxxxxxxxxxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Don Brace <don.brace@xxxxxxxxxxxxx>, Kashyap Desai <kashyap.desai@xxxxxxxxxxxx>, Peter Rivera <peter.rivera@xxxxxxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>, Laurence Oberman <loberman@xxxxxxxxxx>
In-reply-to: <398c755a-ada6-1e60-9562-51b69476e55d@kernel.dk>
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

On 02/06/18 15:18, Jens Axboe wrote:

GLOBAL implies that it's, strangely enough, global. That isn't really the
case. Why not call this BLK_MQ_F_HOST_TAGS or something like that? I'd
welcome better names, but global doesn't seem to be a great choice.

BLK_MQ_F_SET_TAGS?

I like the name BLK_MQ_F_HOST_TAGS because it refers how these tags willbe used by SCSI LLDs, namely as a host-wide tag set.


Thanks,

Bart.

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References:
- [PATCH V2 0/8] blk-mq/scsi-mq: support global tags & introduce force_blk_mq
  - From: Ming Lei
- [PATCH V2 2/8] blk-mq: introduce BLK_MQ_F_GLOBAL_TAGS
  - From: Ming Lei
- Re: [PATCH V2 2/8] blk-mq: introduce BLK_MQ_F_GLOBAL_TAGS
  - From: Jens Axboe

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