linux-kernel - Re: [patch] fix infinite loop in generic_file_splice

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Message-Id: <E1JjfvC-0005Jn-GD@pomaz-ex.szeredi.hu>
Date:	Wed, 09 Apr 2008 21:25:26 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	akpm@...ux-foundation.org
CC:	miklos@...redi.hu, jens.axboe@...cle.com,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	allard@...e.nl, neilb@...e.de
Subject: Re: [patch] fix infinite loop in generic_file_splice_read()

> We found suspicious-looking code in generic_file_splice_read() back in
> February.  See http://lkml.org/lkml/2008/2/29/443.  I suspect that patch
> (if it works) will address the truncate lockup as well - it zaps the loop
> entirely.
> 
> Unfortunately Allard never got back to us (probably because he's running
> 2.6.24 which has a quite different generic_file_splice_read()) and the
> patch didn't get anywhere.
> 
> Here it is again.
> 
> It needs a changelog.
> 
> Nobody has tested this at all, to my knowledge.

Patch looks sane, and fixes the fsx-linux/NFS/fuse lockup, as expected.

Thanks,
Miklos
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