diff options
author | Tejun Heo <tj@kernel.org> | 2013-11-28 14:54:29 -0500 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-11-29 17:48:15 -0800 |
commit | 517e64f57883bd63c5a4ab8b3d0d3ed68c55d0cf (patch) | |
tree | 573f1e42c269ab32985511788a612ed3d7a99347 /include/media/ir-rx51.h | |
parent | 2b25a62901a1af654c2604f19592b13742ad1601 (diff) |
sysfs, kernfs: revamp sysfs_dirent active_ref lockdep annotation
Currently, sysfs_dirent active_ref lockdep annotation uses
attribute->[s]key as the lockdep key, which forces
kernfs_create_file_ns() to assume that sysfs_dirent->priv is pointing
to a struct attribute which may not be true for non-sysfs users. This
patch restructures the lockdep annotation such that
* kernfs_ops contains lockdep_key which is used by default for files
created kernfs_create_file_ns().
* kernfs_create_file_ns_key() is introduced which takes an extra @key
argument. The created file will use the specified key for
active_ref lockdep annotation. If NULL is specified, lockdep for
the file is disabled.
* sysfs_add_file_mode_ns() is updated to use
kernfs_create_file_ns_key() with the appropriate key from the
attribute or NULL if ignore_lockdep is set.
This makes the lockdep annotation properly contained in kernfs while
allowing sysfs to cleanly keep its current behavior. This patch
doesn't introduce any behavior differences.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/media/ir-rx51.h')
0 files changed, 0 insertions, 0 deletions