diff options
| author | Tejun Heo <tj@kernel.org> | 2013-11-28 14:54:30 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-11-29 17:55:10 -0800 |
| commit | ccf73cf336dc55bc52748205dee998d2fd4a8808 (patch) | |
| tree | 8e3a3b9891e6b9d4804299cd23110c91d8f8016e /fs/sysfs/inode.c | |
| parent | 517e64f57883bd63c5a4ab8b3d0d3ed68c55d0cf (diff) | |
sysfs, kernfs: introduce kernfs[_find_and]_get() and kernfs_put()
Introduce kernfs interface for finding, getting and putting
sysfs_dirents.
* sysfs_find_dirent() is renamed to kernfs_find_ns() and lockdep
assertion for sysfs_mutex is added.
* sysfs_get_dirent_ns() is renamed to kernfs_find_and_get().
* Macro inline dancing around __sysfs_get/put() are removed and
kernfs_get/put() are made proper functions implemented in
fs/sysfs/dir.c.
While the conversions are mostly equivalent, there's one difference -
kernfs_get() doesn't return the input param as its return value. This
change is intentional. While passing through the input increases
writability in some areas, it is unnecessary and has been shown to
cause confusion regarding how the last ref is handled.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/sysfs/inode.c')
| -rw-r--r-- | fs/sysfs/inode.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c index b3c717ab3496..bfe4478f82bf 100644 --- a/fs/sysfs/inode.c +++ b/fs/sysfs/inode.c @@ -254,7 +254,8 @@ int sysfs_getattr(struct vfsmount *mnt, struct dentry *dentry, static void sysfs_init_inode(struct sysfs_dirent *sd, struct inode *inode) { - inode->i_private = sysfs_get(sd); + kernfs_get(sd); + inode->i_private = sd; inode->i_mapping->a_ops = &sysfs_aops; inode->i_mapping->backing_dev_info = &sysfs_backing_dev_info; inode->i_op = &sysfs_inode_operations; @@ -321,7 +322,7 @@ void sysfs_evict_inode(struct inode *inode) truncate_inode_pages(&inode->i_data, 0); clear_inode(inode); - sysfs_put(sd); + kernfs_put(sd); } int sysfs_permission(struct inode *inode, int mask) |