Re: Need help tracking down a bug in the bio-FOLL_PIN patches

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To: Hillf Danton <hdanton@xxxxxxxx>
Subject: Re: Need help tracking down a bug in the bio-FOLL_PIN patches
From: David Howells <dhowells@xxxxxxxxxx>
Date: Tue, 07 Feb 2023 10:44:49 +0000
Cc: dhowells@xxxxxxxxxx, Jens Axboe <axboe@xxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, John Hubbard <jhubbard@xxxxxxxxxx>, linux-mm@xxxxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20230207094731.1390-1-hdanton@sina.com>
Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903
References: <20230207094731.1390-1-hdanton@sina.com>

Hillf Danton <hdanton@xxxxxxxx> wrote:

> 	pipe_buf_release include/linux/pipe_fs_i.h:183 [inline]
> 	iov_iter_revert.part.0+0x402/0x730 lib/iov_iter.c:935
> 	iov_iter_revert+0x4c/0x60 lib/iov_iter.c:919

Yeah.  That seems to be the problem.

Thanks,
David

References:
- Re: Need help tracking down a bug in the bio-FOLL_PIN patches
  - From: Hillf Danton

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