lkml.org 
[lkml]   [2008]   [May]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC][PATCH 0/3] configfs: Make nested default groups lockdep-friendly
On Tue, 20 May 2008 18:33:20 +0200
Louis Rilling <Louis.Rilling@kerlabs.com> wrote:

> Hi all,
>
> The following patches fix lockdep warnings resulting from (correct)
> recursive locking in configfs.
>
> Current lockdep annotations for inode mutexes in configfs are
> lockdep-friendly provided that:
> 1/ config_groups have at most one level of default groups (see
> configfs_attach_group()),
> 2/ config_groups having default groups are never removed (see
> configfs_detach_prep()).
>
> Since lockdep does not handle such correct recursion, the idea is to
> insert lockdep_off()/lockdep_on() for inode mutexes as soon as the
> level of recursion of the I_MUTEX_PARENT -> I_MUTEX_CHILD dependency
> pattern increases.

I'm... not entirely happy with such a solution ;(

there must be a better one.


\
 
 \ /
  Last update: 2008-05-20 19:01    [W:0.077 / U:0.856 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site