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

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To: Guenter Roeck <linux@xxxxxxxxxxxx>
Subject: Re: [PATCH 1/5] block: rewrite blk_bvec_map_sg to avoid a nth_page call
From: Christoph Hellwig <hch@xxxxxx>
Date: Mon, 15 Apr 2019 22:52:42 +0200
Cc: Christoph Hellwig <hch@xxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Ming Lei <ming.lei@xxxxxxxxxx>, linux-block@xxxxxxxxxxxxxxx
In-reply-to: <20190415194435.GA23676@roeck-us.net>
References: <20190408104641.4905-1-hch@lst.de> <20190408104641.4905-2-hch@lst.de> <20190415194435.GA23676@roeck-us.net>
User-agent: Mutt/1.5.17 (2007-11-01)

On Mon, Apr 15, 2019 at 12:44:35PM -0700, Guenter Roeck wrote:
> This patch causes crashes with various boot tests. Most sparc tests crash, as
> well as several arm tests. Bisect results in both cases point to this patch.

That just means we trigger an existing bug more easily now.  I'll see
if I can help with the issues.

Follow-Ups:
- Re: [PATCH 1/5] block: rewrite blk_bvec_map_sg to avoid a nth_page call
  - From: Guenter Roeck

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

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