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

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Subject: Re: [PATCH 04/12] splice: lift pipe_lock out of splice_to_pipe()
From: Andreas Schwab <schwab@xxxxxxxxxxxxxx>
Date: Sun, 18 Dec 2016 23:49:46 +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>
In-reply-to: <CA+55aFzPE6FbwX2NuiMkz9G+FzAoiNeb8jOSWwSoX3O7+KuH4Q@mail.gmail.com> (Linus Torvalds's message of "Sun, 18 Dec 2016 14:10:54 -0800")
References: <20160917190023.GA8039@ZenIV.linux.org.uk> <20160923190032.GA25771@ZenIV.linux.org.uk> <20160923190326.GB2356@ZenIV.linux.org.uk> <CA+55aFxzPH2AYvDVWSAomO6bN_sW4+qDv87Xbq8XHMyvBEYe+w@mail.gmail.com> <20160923201025.GJ2356@ZenIV.linux.org.uk> <CA+55aFyr-X_6FcWkSXBUcxV0p1BUZw8d=46wawv2x+8y7f8YcQ@mail.gmail.com> <20160924035951.GN2356@ZenIV.linux.org.uk> <87shpmxrey.fsf@linux-m68k.org> <CA+55aFyJGz6njFjKe8O0+XRJhCrPHA_wnEuLbGSGypJ0G2-vpQ@mail.gmail.com> <20161218201207.GY1555@ZenIV.linux.org.uk> <20161218203003.GZ1555@ZenIV.linux.org.uk> <CA+55aFzPE6FbwX2NuiMkz9G+FzAoiNeb8jOSWwSoX3O7+KuH4Q@mail.gmail.com>
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.90 (gnu/linux)

On Dez 18 2016, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:

> Regardless - Andreas, can you verify that that fixes your issues? I'm
> assuming you had some real load that made you notice this, not just he
> dummy example..

This is from the testsuite of pv, I only noticed because it was hanging.

Andreas.

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References:
- Re: xfs_file_splice_read: possible circular locking dependency detected
  - From: Al Viro
- [RFC][CFT] splice_read reworked
  - From: Al Viro
- [PATCH 04/11] splice: lift pipe_lock out of splice_to_pipe()
  - From: Al Viro
- Re: [PATCH 04/11] splice: lift pipe_lock out of splice_to_pipe()
  - From: Linus Torvalds
- Re: [PATCH 04/11] splice: lift pipe_lock out of splice_to_pipe()
  - From: Al Viro
- Re: [PATCH 04/11] splice: lift pipe_lock out of splice_to_pipe()
  - From: Linus Torvalds
- [PATCH 04/12] splice: lift pipe_lock out of splice_to_pipe()
  - From: Al Viro
- Re: [PATCH 04/12] splice: lift pipe_lock out of splice_to_pipe()
  - From: Andreas Schwab
- Re: [PATCH 04/12] splice: lift pipe_lock out of splice_to_pipe()
  - From: Linus Torvalds
- Re: [PATCH 04/12] splice: lift pipe_lock out of splice_to_pipe()
  - From: Al Viro
- Re: [PATCH 04/12] splice: lift pipe_lock out of splice_to_pipe()
  - From: Al Viro
- Re: [PATCH 04/12] splice: lift pipe_lock out of splice_to_pipe()
  - From: Linus Torvalds

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