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authorBart Van Assche <bvanassche@acm.org>2010-12-21 13:09:23 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2011-02-03 15:10:18 -0800
commit5480bcdd60603f834b7c0c252213ca1932c28bfc (patch)
tree3b56a6e23cc99d0e651e16432070065530e7d6ab /Documentation/filesystems
parenta5462516aa9942bd68c8769d4bcefa8a7c718300 (diff)
docs/sysfs: Update directory/kobject documentation.
Some time ago the way how sysfs stores a pointer to a kobject corresponding to a directory was modified. This patch brings the documentation again in sync with the implementation. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Cc: Tejun Heo <tj@kernel.org> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/sysfs.txt10
1 files changed, 6 insertions, 4 deletions
diff --git a/Documentation/filesystems/sysfs.txt b/Documentation/filesystems/sysfs.txt
index 5d1335faec2..2ed95f9b770 100644
--- a/Documentation/filesystems/sysfs.txt
+++ b/Documentation/filesystems/sysfs.txt
@@ -39,10 +39,12 @@ userspace. Top-level directories in sysfs represent the common
ancestors of object hierarchies; i.e. the subsystems the objects
belong to.
-Sysfs internally stores the kobject that owns the directory in the
-->d_fsdata pointer of the directory's dentry. This allows sysfs to do
-reference counting directly on the kobject when the file is opened and
-closed.
+Sysfs internally stores a pointer to the kobject that implements a
+directory in the sysfs_dirent object associated with the directory. In
+the past this kobject pointer has been used by sysfs to do reference
+counting directly on the kobject whenever the file is opened or closed.
+With the current sysfs implementation the kobject reference count is
+only modified directly by the function sysfs_schedule_callback().
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