From: Christoph Hellwig <hch@infradead.org>
To: Al Viro <viro@zeniv.linux.org.uk>, Jens Axboe <axboe@kernel.dk>,
Mark Fasheh <mfasheh@suse.com>, Joel Becker <jlbec@evilplan.org>
Cc: linux-fsdevel@vger.kernel.org, xfs@oss.sgi.com
Subject: Re: [PATCH 0/5] splice: locking changes and code refactoring
Date: Mon, 13 Jan 2014 06:14:16 -0800 [thread overview]
Message-ID: <20140113141416.GA30117@infradead.org> (raw)
In-Reply-To: <20131212181459.994196463@bombadil.infradead.org>
ping? Would be nice to get this into 3.14
On Thu, Dec 12, 2013 at 10:14:59AM -0800, Christoph Hellwig wrote:
> I've been trying to fix the old splice iolock lock inversion issue in XFS
> and started looking over the splice code a little more for it. It seems
> like the root of all evil is that we try to nest i_mutex inside the
> pipe_lock instead of outside of it, and I can't find any good reason for
> that. Does anyone remember why it went this way initially?
>
> By fixing that and a few minor issues we can not only fix this issue nicely
> in XFS, but also get rid of various bits of code duplication, and poking into
> splice internals by the ocfs2 splice_write path.
>
> Btw, does anyone have a good test suite for splice functionality? xfstests
> coverage exits but is not very extensive.
>
> b/fs/ocfs2/file.c | 2
> b/fs/splice.c | 5 +-
> b/fs/xfs/xfs_file.c | 26 +++++-----
> b/include/linux/splice.h | 2
> fs/ocfs2/file.c | 78 +++++++++----------------------
> fs/splice.c | 115 +++++++++++++----------------------------------
> include/linux/splice.h | 7 --
> 7 files changed, 76 insertions(+), 159 deletions(-)
> --
> To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
---end quoted text---
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WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@infradead.org>
To: Al Viro <viro@zeniv.linux.org.uk>, Jens Axboe <axboe@kernel.dk>,
Mark Fasheh <mfasheh@suse.com>, Joel Becker <jlbec@evilplan.org>
Cc: linux-fsdevel@vger.kernel.org, xfs@oss.sgi.com
Subject: Re: [PATCH 0/5] splice: locking changes and code refactoring
Date: Mon, 13 Jan 2014 06:14:16 -0800 [thread overview]
Message-ID: <20140113141416.GA30117@infradead.org> (raw)
In-Reply-To: <20131212181459.994196463@bombadil.infradead.org>
ping? Would be nice to get this into 3.14
On Thu, Dec 12, 2013 at 10:14:59AM -0800, Christoph Hellwig wrote:
> I've been trying to fix the old splice iolock lock inversion issue in XFS
> and started looking over the splice code a little more for it. It seems
> like the root of all evil is that we try to nest i_mutex inside the
> pipe_lock instead of outside of it, and I can't find any good reason for
> that. Does anyone remember why it went this way initially?
>
> By fixing that and a few minor issues we can not only fix this issue nicely
> in XFS, but also get rid of various bits of code duplication, and poking into
> splice internals by the ocfs2 splice_write path.
>
> Btw, does anyone have a good test suite for splice functionality? xfstests
> coverage exits but is not very extensive.
>
> b/fs/ocfs2/file.c | 2
> b/fs/splice.c | 5 +-
> b/fs/xfs/xfs_file.c | 26 +++++-----
> b/include/linux/splice.h | 2
> fs/ocfs2/file.c | 78 +++++++++----------------------
> fs/splice.c | 115 +++++++++++++----------------------------------
> include/linux/splice.h | 7 --
> 7 files changed, 76 insertions(+), 159 deletions(-)
> --
> To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
---end quoted text---
next prev parent reply other threads:[~2014-01-13 14:14 UTC|newest]
Thread overview: 82+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-12 18:14 [PATCH 0/5] splice: locking changes and code refactoring Christoph Hellwig
2013-12-12 18:14 ` Christoph Hellwig
2013-12-12 18:15 ` [PATCH 1/5] splice: move balance_dirty_pages_ratelimited into pipe_to_file Christoph Hellwig
2013-12-12 18:15 ` Christoph Hellwig
2013-12-12 18:15 ` [PATCH 2/5] splice: nest i_mutex outside pipe_lock Christoph Hellwig
2013-12-12 18:15 ` Christoph Hellwig
2013-12-12 18:15 ` [PATCH 3/5] splice: use splice_from_pipe in generic_file_splice_write Christoph Hellwig
2013-12-12 18:15 ` Christoph Hellwig
2013-12-12 18:15 ` [PATCH 4/5] xfs: fix splice_write locking Christoph Hellwig
2013-12-12 18:15 ` Christoph Hellwig
2013-12-12 18:15 ` [PATCH 5/5] splice: stop exporting splice_from_pipe implementation details Christoph Hellwig
2013-12-12 18:15 ` Christoph Hellwig
2014-01-13 14:14 ` Christoph Hellwig [this message]
2014-01-13 14:14 ` [PATCH 0/5] splice: locking changes and code refactoring Christoph Hellwig
2014-01-13 23:56 ` Al Viro
2014-01-13 23:56 ` Al Viro
2014-01-14 13:22 ` Christoph Hellwig
2014-01-14 13:22 ` Christoph Hellwig
2014-01-14 17:20 ` Al Viro
2014-01-14 17:20 ` Al Viro
2014-01-15 18:10 ` Al Viro
2014-01-15 18:10 ` Al Viro
2014-01-18 6:40 ` Al Viro
2014-01-18 7:22 ` Linus Torvalds
2014-01-18 7:22 ` Linus Torvalds
2014-01-18 7:46 ` Al Viro
2014-01-18 7:56 ` Al Viro
2014-01-18 7:56 ` Al Viro
2014-01-18 8:27 ` Al Viro
2014-01-18 8:44 ` David Miller
2014-01-18 8:44 ` David Miller
2014-02-07 17:10 ` Al Viro
2014-02-07 17:10 ` Al Viro
2014-01-18 19:59 ` Linus Torvalds
2014-01-18 20:10 ` Al Viro
2014-01-18 20:27 ` Al Viro
2014-01-18 20:27 ` Al Viro
2014-01-18 20:30 ` Al Viro
2014-01-18 20:30 ` Al Viro
2014-01-19 5:13 ` [RFC] unifying write variants for filesystems Al Viro
2014-01-19 5:13 ` Al Viro
2014-01-20 13:55 ` Christoph Hellwig
2014-01-20 13:55 ` Christoph Hellwig
2014-01-20 20:32 ` Linus Torvalds
2014-01-20 20:32 ` Linus Torvalds
2014-02-01 22:43 ` Al Viro
2014-02-01 22:43 ` Al Viro
2014-02-02 0:13 ` Linus Torvalds
2014-02-02 2:02 ` Al Viro
2014-02-02 2:02 ` Al Viro
2014-02-02 19:21 ` Al Viro
2014-02-02 19:21 ` Al Viro
2014-02-02 19:23 ` Al Viro
2014-02-02 19:23 ` Al Viro
2014-02-03 14:41 ` Miklos Szeredi
2014-02-03 14:41 ` Miklos Szeredi
2014-02-03 15:33 ` Al Viro
2014-02-03 15:33 ` Al Viro
2014-02-02 23:16 ` Anton Altaparmakov
2014-02-02 23:16 ` Anton Altaparmakov
2014-02-03 15:12 ` Christoph Hellwig
2014-02-03 16:24 ` Al Viro
2014-02-03 16:50 ` Dave Kleikamp
2014-02-03 16:23 ` Dave Kleikamp
2014-02-04 12:44 ` Al Viro
2014-02-04 12:44 ` Al Viro
2014-02-04 12:52 ` Kent Overstreet
2014-02-04 12:52 ` Kent Overstreet
2014-02-04 15:17 ` Al Viro
2014-02-04 15:17 ` Al Viro
2014-02-04 17:27 ` Zach Brown
2014-02-04 17:35 ` Kent Overstreet
2014-02-04 18:08 ` Al Viro
2014-02-04 18:08 ` Al Viro
2014-02-04 18:00 ` Al Viro
2014-02-04 18:00 ` Al Viro
2014-02-04 18:33 ` Zach Brown
2014-02-04 18:36 ` Al Viro
2014-02-04 18:36 ` Al Viro
2014-02-05 19:58 ` Al Viro
2014-02-05 20:42 ` Zach Brown
2014-02-06 9:08 ` Kent Overstreet
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