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| author | Bart Van Assche <bvanassche@acm.org> | 2010-12-21 13:09:23 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-02-04 00:10:18 +0100 |
| commit | 5480bcdd60603f834b7c0c252213ca1932c28bfc (patch) | |
| tree | 3b56a6e23cc99d0e651e16432070065530e7d6ab /Documentation/filesystems | |
| parent | driver-core: document restrictions on device_rename() (diff) | |
| download | linux-5480bcdd60603f834b7c0c252213ca1932c28bfc.tar.xz linux-5480bcdd60603f834b7c0c252213ca1932c28bfc.zip | |
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.txt | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/Documentation/filesystems/sysfs.txt b/Documentation/filesystems/sysfs.txt index 5d1335faec2d..2ed95f9b770a 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(). Attributes |