sysfs: introduce [__]sysfs_remove()
Given a sysfs_dirent, there is no reason to have multiple versions of
removal functions. A function which removes the specified
sysfs_dirent and its descendants is enough.
This patch intorduces [__}sysfs_remove() which replaces all internal
variations of removal functions. This will be the only removal
function in the planned new sysfs_dirent based interface.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 0cdfd81..b518afd 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -545,7 +545,8 @@
* LOCKING:
* Determined by sysfs_addrm_start().
*/
-void sysfs_remove_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
+static void sysfs_remove_one(struct sysfs_addrm_cxt *acxt,
+ struct sysfs_dirent *sd)
{
struct sysfs_inode_attrs *ps_iattr;
@@ -775,20 +776,6 @@
.setxattr = sysfs_setxattr,
};
-static void remove_dir(struct sysfs_dirent *sd)
-{
- struct sysfs_addrm_cxt acxt;
-
- sysfs_addrm_start(&acxt);
- sysfs_remove_one(&acxt, sd);
- sysfs_addrm_finish(&acxt);
-}
-
-void sysfs_remove_subdir(struct sysfs_dirent *sd)
-{
- remove_dir(sd);
-}
-
static struct sysfs_dirent *sysfs_leftmost_descendant(struct sysfs_dirent *pos)
{
struct sysfs_dirent *last;
@@ -844,25 +831,36 @@
return pos->s_parent;
}
-static void __sysfs_remove_dir(struct sysfs_dirent *dir_sd)
+void __sysfs_remove(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
{
- struct sysfs_addrm_cxt acxt;
struct sysfs_dirent *pos, *next;
- if (!dir_sd)
+ if (!sd)
return;
- pr_debug("sysfs %s: removing dir\n", dir_sd->s_name);
- sysfs_addrm_start(&acxt);
+ pr_debug("sysfs %s: removing\n", sd->s_name);
next = NULL;
do {
pos = next;
- next = sysfs_next_descendant_post(pos, dir_sd);
+ next = sysfs_next_descendant_post(pos, sd);
if (pos)
- sysfs_remove_one(&acxt, pos);
+ sysfs_remove_one(acxt, pos);
} while (next);
+}
+/**
+ * sysfs_remove - remove a sysfs_dirent recursively
+ * @sd: the sysfs_dirent to remove
+ *
+ * Remove @sd along with all its subdirectories and files.
+ */
+void sysfs_remove(struct sysfs_dirent *sd)
+{
+ struct sysfs_addrm_cxt acxt;
+
+ sysfs_addrm_start(&acxt);
+ __sysfs_remove(&acxt, sd);
sysfs_addrm_finish(&acxt);
}
@@ -882,7 +880,10 @@
kobj->sd = NULL;
spin_unlock(&sysfs_assoc_lock);
- __sysfs_remove_dir(sd);
+ if (sd) {
+ WARN_ON_ONCE(sysfs_type(sd) != SYSFS_DIR);
+ sysfs_remove(sd);
+ }
}
int sysfs_rename(struct sysfs_dirent *sd, struct sysfs_dirent *new_parent_sd,