Re: [PATCH 1/5] block: rewrite blk_bvec_map_sg to avoid a nth_page call

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To: Christoph Hellwig <hch@xxxxxx>, Jens Axboe <axboe@xxxxxxxxx>
Subject: Re: [PATCH 1/5] block: rewrite blk_bvec_map_sg to avoid a nth_page call
From: Bart Van Assche <bvanassche@xxxxxxx>
Date: Mon, 08 Apr 2019 15:04:13 -0700
Cc: Ming Lei <ming.lei@xxxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx
In-reply-to: <20190408104641.4905-2-hch@lst.de>
References: <20190408104641.4905-1-hch@lst.de> <20190408104641.4905-2-hch@lst.de>

On Mon, 2019-04-08 at 12:46 +-0200, Christoph Hellwig wrote:
+AD4 The offset in scatterlists is allowed to be larger than the page size,
+AD4 so don't go to great length to avoid that case and simplify the
+AD4 arithmetics.

Reviewed-by: Bart Van Assche +ADw-bvanassche+AEA-acm.org+AD4

References:
- avoid calling nth_page in the block I/O path
  - From: Christoph Hellwig
- [PATCH 1/5] block: rewrite blk_bvec_map_sg to avoid a nth_page call
  - From: Christoph Hellwig

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