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From: Al Viro <viro@ZenIV.linux.org.uk>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 00/16 v3] tracing: Add new file system tracefs
Date: Tue, 27 Jan 2015 04:38:39 +0000 [thread overview]
Message-ID: <20150127043839.GW29656@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20150126200350.471db2c0@grimm.local.home>
On Mon, Jan 26, 2015 at 08:03:50PM -0500, Steven Rostedt wrote:
> On Mon, 26 Jan 2015 20:02:18 -0500
> Steven Rostedt <rostedt@goodmis.org> wrote:
>
>
> > Now you see why I found just dropping the parent mutex easier.
>
> And this is probably why kernfs does things the way it does. I can
> imagine it having the same locking issues.
The least said about kernfs locking, the better...
As for the use of trace_types_lock to serialize rmdir vs. event
addition/removal, I wonder what's wrong with actually using the
->i_mutex of /instances - you have a reference to its dentry,
after all...
next prev parent reply other threads:[~2015-01-27 4:38 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-26 15:09 Steven Rostedt
2015-01-26 15:09 ` [PATCH 01/16 v3] debugfs_{mkdir,create,link}(): get rid of redundant argument Steven Rostedt
2015-01-26 15:09 ` [PATCH 02/16 v3] debugfs: split the beginning and the end of __create_file() off Steven Rostedt
2015-01-26 15:09 ` [PATCH 03/16 v3] debugfs: kill __create_file() Steven Rostedt
2015-01-26 15:09 ` [PATCH 04/16 v3] fold debugfs_link() into caller Steven Rostedt
2015-01-26 15:09 ` [PATCH 05/16 v3] debugfs_mknod(): get rid useless arguments Steven Rostedt
2015-01-26 15:09 ` [PATCH 06/16 v3] fold debugfs_mkdir() into caller Steven Rostedt
2015-01-26 15:09 ` [PATCH 07/16 v3] fold debugfs_create() " Steven Rostedt
2015-01-26 15:09 ` [PATCH 08/16 v3] fold debugfs_mknod() into callers Steven Rostedt
2015-01-26 15:09 ` [PATCH 09/16 v3] debugfs: take mode-dependent parts of debugfs_get_inode() " Steven Rostedt
2015-01-26 15:09 ` [PATCH 10/16 v3] debugfs: split end_creating() into success and failure cases Steven Rostedt
2015-01-26 15:09 ` [PATCH 11/16 v3] new primitive: debugfs_create_automount() Steven Rostedt
2015-01-26 15:09 ` [PATCH 12/16 v3] tracefs: Add new tracefs file system Steven Rostedt
2015-01-26 15:09 ` [PATCH 13/16 v3] tracing: Convert the tracing facility over to use tracefs Steven Rostedt
2015-01-26 15:09 ` [PATCH 14/16 v3] tracing: Automatically mount tracefs on debugfs/tracing Steven Rostedt
2015-01-26 15:09 ` [PATCH 15/16 v3] tracefs: Add directory /sys/kernel/tracing Steven Rostedt
2015-01-26 15:09 ` [PATCH 16/16 v3] tracing: Have mkdir and rmdir be part of tracefs Steven Rostedt
2015-01-26 19:30 ` [PATCH 00/16 v3] tracing: Add new file system tracefs Al Viro
2015-01-26 20:42 ` Steven Rostedt
2015-01-26 20:44 ` Steven Rostedt
2015-01-26 20:58 ` Steven Rostedt
2015-01-26 21:44 ` Al Viro
2015-01-26 21:46 ` Al Viro
2015-01-26 23:02 ` Al Viro
2015-01-26 23:39 ` Steven Rostedt
2015-01-26 23:43 ` Steven Rostedt
2015-01-26 23:49 ` Steven Rostedt
2015-01-27 0:39 ` Steven Rostedt
2015-01-27 4:34 ` Al Viro
2015-01-27 15:15 ` Steven Rostedt
2015-01-27 0:37 ` Al Viro
2015-01-27 1:02 ` Steven Rostedt
2015-01-27 1:03 ` Steven Rostedt
2015-01-27 4:38 ` Al Viro [this message]
2015-01-27 15:19 ` Steven Rostedt
2015-01-27 15:44 ` Steven Rostedt
2015-01-26 21:40 ` Al Viro
2015-01-26 23:37 ` Steven Rostedt
2015-01-27 2:34 ` Steven Rostedt
2015-01-27 4:46 ` Al Viro
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