Re: [PATCH] block: tolerate 0 byte discard_granularity in __blkdev_issue_discard()

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To: Ming Lei <ming.lei@xxxxxxxxxx>
Subject: Re: [PATCH] block: tolerate 0 byte discard_granularity in __blkdev_issue_discard()
From: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Date: Tue, 04 Aug 2020 20:28:28 -0400
Cc: Coly Li <colyli@xxxxxxx>, linux-block@xxxxxxxxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, Hannes Reinecke <hare@xxxxxxxx>, Xiao Ni <xni@xxxxxxxxxx>, Bart Van Assche <bvanassche@xxxxxxx>, Christoph Hellwig <hch@xxxxxx>, Enzo Matsumiya <ematsumiya@xxxxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Evan Green <evgreen@xxxxxxxxxxxx>
In-reply-to: <20200804235811.GA1981569@T590> (Ming Lei's message of "Wed, 5 Aug 2020 07:58:11 +0800")
Organization: Oracle Corporation

Ming,

> What we need to fix is loop driver, if it claims to support discard,
> q->limits.discard_granularity has to be one valid value.

Yep!

-- 
Martin K. Petersen	Oracle Linux Engineering

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References:
- [PATCH] block: tolerate 0 byte discard_granularity in __blkdev_issue_discard()
  - From: Coly Li
- Re: [PATCH] block: tolerate 0 byte discard_granularity in __blkdev_issue_discard()
  - From: Ming Lei

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