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Re: [PATCH 04/12] splice: lift pipe_lock out of splice_to_pipe()

from [Andreas Schwab] [Permanent Link][Original]
To: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH 04/12] splice: lift pipe_lock out of splice_to_pipe()
From: Andreas Schwab <schwab@xxxxxxxxxxxxxx>
Date: Sun, 18 Dec 2016 20:57:51 +0100
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>, Dave Chinner <david@xxxxxxxxxxxxx>, CAI Qian <caiqian@xxxxxxxxxx>, linux-xfs <linux-xfs@xxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, Jens Axboe <axboe@xxxxxxxxx>, Nick Piggin <npiggin@xxxxxxxxx>, linux-fsdevel <linux-fsdevel@xxxxxxxxxxxxxxx>
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <CA+55aFyJGz6njFjKe8O0+XRJhCrPHA_wnEuLbGSGypJ0G2-vpQ@xxxxxxxxxxxxxx> (Linus Torvalds's message of "Sun, 18 Dec 2016 11:28:44 -0800")
References: <20160914031648.GB2356@xxxxxxxxxxxxxxxxxx> <CA+55aFznQaOWoSMNphgGJJWZ=8-odrc0DAUMzfGPQe+_N4UgNA@xxxxxxxxxxxxxx> <20160914042559.GC2356@xxxxxxxxxxxxxxxxxx> <20160917082007.GA6489@xxxxxxxxxxxxxxxxxx> <20160917190023.GA8039@xxxxxxxxxxxxxxxxxx> <20160923190032.GA25771@xxxxxxxxxxxxxxxxxx> <20160923190326.GB2356@xxxxxxxxxxxxxxxxxx> <CA+55aFxzPH2AYvDVWSAomO6bN_sW4+qDv87Xbq8XHMyvBEYe+w@xxxxxxxxxxxxxx> <20160923201025.GJ2356@xxxxxxxxxxxxxxxxxx> <CA+55aFyr-X_6FcWkSXBUcxV0p1BUZw8d=46wawv2x+8y7f8YcQ@xxxxxxxxxxxxxx> <20160924035951.GN2356@xxxxxxxxxxxxxxxxxx> <87shpmxrey.fsf@xxxxxxxxxxxxxx> <CA+55aFyJGz6njFjKe8O0+XRJhCrPHA_wnEuLbGSGypJ0G2-vpQ@xxxxxxxxxxxxxx>
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.90 (gnu/linux) 
On Dez 18 2016, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> On Sat, Dec 17, 2016 at 11:54 AM, Andreas Schwab <schwab@xxxxxxxxxxxxxx> 
> wrote:
>> This break EPIPE handling inside splice when SIGPIPE is ignored:
>>
>> Before:
>> $ { sleep 1; strace -e splice pv -q /dev/zero; } | :
>
> Where is that "splice" program from?

It's running pv (splice is the argument of strace -e).

http://ivarch.com/programs/pv.shtml

Andreas.

-- 
Andreas Schwab, schwab@xxxxxxxxxxxxxx
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