This is a note to let you know that I've just added the patch titled
kernfs: fix all kernel-doc warnings and multiple typos
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kernfs-fix-all-kernel-doc-warnings-and-multiple-typo.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 26ceb0962ca09d0e3e4ccd99c5c33546abeb72fc
Author: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Date: Fri Nov 11 19:14:56 2022 -0800
kernfs: fix all kernel-doc warnings and multiple typos
[ Upstream commit 24b3e3dd9c9c742a4dd18e71b6963f9e7ab72911 ]
Fix kernel-doc warnings. Many of these are about a function's
return value, so use the kernel-doc Return: format to fix those
Use % prefix on numeric constant values.
dir.c: fix typos/spellos
file.c fix typo: s/taret/target/
Fix all of these kernel-doc warnings:
dir.c:305: warning: missing initial short description on line:
* kernfs_name_hash
dir.c:137: warning: No description found for return value of 'kernfs_path_from_node_locked'
dir.c:196: warning: No description found for return value of 'kernfs_name'
dir.c:224: warning: No description found for return value of 'kernfs_path_from_node'
dir.c:292: warning: No description found for return value of 'kernfs_get_parent'
dir.c:312: warning: No description found for return value of 'kernfs_name_hash'
dir.c:404: warning: No description found for return value of 'kernfs_unlink_sibling'
dir.c:588: warning: No description found for return value of 'kernfs_node_from_dentry'
dir.c:806: warning: No description found for return value of 'kernfs_find_ns'
dir.c:879: warning: No description found for return value of 'kernfs_find_and_get_ns'
dir.c:904: warning: No description found for return value of 'kernfs_walk_and_get_ns'
dir.c:927: warning: No description found for return value of 'kernfs_create_root'
dir.c:996: warning: No description found for return value of 'kernfs_root_to_node'
dir.c:1016: warning: No description found for return value of 'kernfs_create_dir_ns'
dir.c:1048: warning: No description found for return value of 'kernfs_create_empty_dir'
dir.c:1306: warning: No description found for return value of 'kernfs_next_descendant_post'
dir.c:1568: warning: No description found for return value of 'kernfs_remove_self'
dir.c:1630: warning: No description found for return value of 'kernfs_remove_by_name_ns'
dir.c:1667: warning: No description found for return value of 'kernfs_rename_ns'
file.c:66: warning: No description found for return value of 'of_on'
file.c:88: warning: No description found for return value of 'kernfs_deref_open_node_locked'
file.c:1036: warning: No description found for return value of '__kernfs_create_file'
inode.c:100: warning: No description found for return value of 'kernfs_setattr'
mount.c:160: warning: No description found for return value of 'kernfs_root_from_sb'
mount.c:198: warning: No description found for return value of 'kernfs_node_dentry'
mount.c:302: warning: No description found for return value of 'kernfs_super_ns'
mount.c:318: warning: No description found for return value of 'kernfs_get_tree'
symlink.c:28: warning: No description found for return value of 'kernfs_create_link'
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20221112031456.22980-1-rdunlap@xxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Stable-dep-of: 1be59c97c83c ("cgroup/cpuset: Prevent UAF in proc_cpuset_show()")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
index a00e11ebfa775..44b907874fba1 100644
--- a/fs/kernfs/dir.c
+++ b/fs/kernfs/dir.c
@@ -125,9 +125,9 @@ static struct kernfs_node *kernfs_common_ancestor(struct kernfs_node *a,
* kn_to: /n1/n2/n3 [depth=3]
* result: /../..
*
- * [3] when @kn_to is NULL result will be "(null)"
+ * [3] when @kn_to is %NULL result will be "(null)"
*
- * Returns the length of the full path. If the full length is equal to or
+ * Return: the length of the full path. If the full length is equal to or
* greater than @buflen, @buf contains the truncated path with the trailing
* '\0'. On error, -errno is returned.
*/
@@ -185,10 +185,12 @@ static int kernfs_path_from_node_locked(struct kernfs_node *kn_to,
* @buflen: size of @buf
*
* Copies the name of @kn into @buf of @buflen bytes. The behavior is
- * similar to strlcpy(). It returns the length of @kn's name and if @buf
- * isn't long enough, it's filled upto @buflen-1 and nul terminated.
+ * similar to strlcpy().
*
- * Fills buffer with "(null)" if @kn is NULL.
+ * Fills buffer with "(null)" if @kn is %NULL.
+ *
+ * Return: the length of @kn's name and if @buf isn't long enough,
+ * it's filled up to @buflen-1 and nul terminated.
*
* This function can be called from any context.
*/
@@ -215,7 +217,7 @@ int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen)
* path (which includes '..'s) as needed to reach from @from to @to is
* returned.
*
- * Returns the length of the full path. If the full length is equal to or
+ * Return: the length of the full path. If the full length is equal to or
* greater than @buflen, @buf contains the truncated path with the trailing
* '\0'. On error, -errno is returned.
*/
@@ -287,6 +289,8 @@ void pr_cont_kernfs_path(struct kernfs_node *kn)
*
* Determines @kn's parent, pins and returns it. This function can be
* called from any context.
+ *
+ * Return: parent node of @kn
*/
struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn)
{
@@ -302,11 +306,11 @@ struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn)
}
/**
- * kernfs_name_hash
+ * kernfs_name_hash - calculate hash of @ns + @name
* @name: Null terminated string to hash
* @ns: Namespace tag to hash
*
- * Returns 31 bit hash of ns + name (so it fits in an off_t )
+ * Return: 31-bit hash of ns + name (so it fits in an off_t)
*/
static unsigned int kernfs_name_hash(const char *name, const void *ns)
{
@@ -354,8 +358,8 @@ static int kernfs_sd_compare(const struct kernfs_node *left,
* Locking:
* kernfs_rwsem held exclusive
*
- * RETURNS:
- * 0 on susccess -EEXIST on failure.
+ * Return:
+ * %0 on success, -EEXIST on failure.
*/
static int kernfs_link_sibling(struct kernfs_node *kn)
{
@@ -394,8 +398,10 @@ static int kernfs_link_sibling(struct kernfs_node *kn)
* @kn: kernfs_node of interest
*
* Try to unlink @kn from its sibling rbtree which starts from
- * kn->parent->dir.children. Returns %true if @kn was actually
- * removed, %false if @kn wasn't on the rbtree.
+ * kn->parent->dir.children.
+ *
+ * Return: %true if @kn was actually removed,
+ * %false if @kn wasn't on the rbtree.
*
* Locking:
* kernfs_rwsem held exclusive
@@ -419,10 +425,10 @@ static bool kernfs_unlink_sibling(struct kernfs_node *kn)
* @kn: kernfs_node to get an active reference to
*
* Get an active reference of @kn. This function is noop if @kn
- * is NULL.
+ * is %NULL.
*
- * RETURNS:
- * Pointer to @kn on success, NULL on failure.
+ * Return:
+ * Pointer to @kn on success, %NULL on failure.
*/
struct kernfs_node *kernfs_get_active(struct kernfs_node *kn)
{
@@ -442,7 +448,7 @@ struct kernfs_node *kernfs_get_active(struct kernfs_node *kn)
* @kn: kernfs_node to put an active reference to
*
* Put an active reference to @kn. This function is noop if @kn
- * is NULL.
+ * is %NULL.
*/
void kernfs_put_active(struct kernfs_node *kn)
{
@@ -464,7 +470,7 @@ void kernfs_put_active(struct kernfs_node *kn)
* kernfs_drain - drain kernfs_node
* @kn: kernfs_node to drain
*
- * Drain existing usages and nuke all existing mmaps of @kn. Mutiple
+ * Drain existing usages and nuke all existing mmaps of @kn. Multiple
* removers may invoke this function concurrently on @kn and all will
* return after draining is complete.
*/
@@ -577,7 +583,7 @@ EXPORT_SYMBOL_GPL(kernfs_put);
* kernfs_node_from_dentry - determine kernfs_node associated with a dentry
* @dentry: the dentry in question
*
- * Return the kernfs_node associated with @dentry. If @dentry is not a
+ * Return: the kernfs_node associated with @dentry. If @dentry is not a
* kernfs one, %NULL is returned.
*
* While the returned kernfs_node will stay accessible as long as @dentry
@@ -698,8 +704,8 @@ struct kernfs_node *kernfs_new_node(struct kernfs_node *parent,
* @id's lower 32bits encode ino and upper gen. If the gen portion is
* zero, all generations are matched.
*
- * RETURNS:
- * NULL on failure. Return a kernfs node with reference counter incremented
+ * Return: %NULL on failure,
+ * otherwise a kernfs node with reference counter incremented.
*/
struct kernfs_node *kernfs_find_and_get_node_by_id(struct kernfs_root *root,
u64 id)
@@ -747,8 +753,8 @@ struct kernfs_node *kernfs_find_and_get_node_by_id(struct kernfs_root *root,
* function increments nlink of the parent's inode if @kn is a
* directory and link into the children list of the parent.
*
- * RETURNS:
- * 0 on success, -EEXIST if entry with the given name already
+ * Return:
+ * %0 on success, -EEXIST if entry with the given name already
* exists.
*/
int kernfs_add_one(struct kernfs_node *kn)
@@ -811,8 +817,9 @@ int kernfs_add_one(struct kernfs_node *kn)
* @name: name to look for
* @ns: the namespace tag to use
*
- * Look for kernfs_node with name @name under @parent. Returns pointer to
- * the found kernfs_node on success, %NULL on failure.
+ * Look for kernfs_node with name @name under @parent.
+ *
+ * Return: pointer to the found kernfs_node on success, %NULL on failure.
*/
static struct kernfs_node *kernfs_find_ns(struct kernfs_node *parent,
const unsigned char *name,
@@ -885,8 +892,9 @@ static struct kernfs_node *kernfs_walk_ns(struct kernfs_node *parent,
* @ns: the namespace tag to use
*
* Look for kernfs_node with name @name under @parent and get a reference
- * if found. This function may sleep and returns pointer to the found
- * kernfs_node on success, %NULL on failure.
+ * if found. This function may sleep.
+ *
+ * Return: pointer to the found kernfs_node on success, %NULL on failure.
*/
struct kernfs_node *kernfs_find_and_get_ns(struct kernfs_node *parent,
const char *name, const void *ns)
@@ -910,8 +918,9 @@ EXPORT_SYMBOL_GPL(kernfs_find_and_get_ns);
* @ns: the namespace tag to use
*
* Look for kernfs_node with path @path under @parent and get a reference
- * if found. This function may sleep and returns pointer to the found
- * kernfs_node on success, %NULL on failure.
+ * if found. This function may sleep.
+ *
+ * Return: pointer to the found kernfs_node on success, %NULL on failure.
*/
struct kernfs_node *kernfs_walk_and_get_ns(struct kernfs_node *parent,
const char *path, const void *ns)
@@ -933,7 +942,7 @@ struct kernfs_node *kernfs_walk_and_get_ns(struct kernfs_node *parent,
* @flags: KERNFS_ROOT_* flags
* @priv: opaque data associated with the new directory
*
- * Returns the root of the new hierarchy on success, ERR_PTR() value on
+ * Return: the root of the new hierarchy on success, ERR_PTR() value on
* failure.
*/
struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops,
@@ -1005,6 +1014,8 @@ void kernfs_destroy_root(struct kernfs_root *root)
/**
* kernfs_root_to_node - return the kernfs_node associated with a kernfs_root
* @root: root to use to lookup
+ *
+ * Return: @root's kernfs_node
*/
struct kernfs_node *kernfs_root_to_node(struct kernfs_root *root)
{
@@ -1021,7 +1032,7 @@ struct kernfs_node *kernfs_root_to_node(struct kernfs_root *root)
* @priv: opaque data associated with the new directory
* @ns: optional namespace tag of the directory
*
- * Returns the created node on success, ERR_PTR() value on failure.
+ * Return: the created node on success, ERR_PTR() value on failure.
*/
struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
const char *name, umode_t mode,
@@ -1055,7 +1066,7 @@ struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
* @parent: parent in which to create a new directory
* @name: name of the new directory
*
- * Returns the created node on success, ERR_PTR() value on failure.
+ * Return: the created node on success, ERR_PTR() value on failure.
*/
struct kernfs_node *kernfs_create_empty_dir(struct kernfs_node *parent,
const char *name)
@@ -1304,6 +1315,8 @@ static struct kernfs_node *kernfs_leftmost_descendant(struct kernfs_node *pos)
* Find the next descendant to visit for post-order traversal of @root's
* descendants. @root is included in the iteration and the last node to be
* visited.
+ *
+ * Return: the next descendant to visit or %NULL when done.
*/
static struct kernfs_node *kernfs_next_descendant_post(struct kernfs_node *pos,
struct kernfs_node *root)
@@ -1567,6 +1580,8 @@ void kernfs_unbreak_active_protection(struct kernfs_node *kn)
* the whole kernfs_ops which won the arbitration. This can be used to
* guarantee, for example, all concurrent writes to a "delete" file to
* finish only after the whole operation is complete.
+ *
+ * Return: %true if @kn is removed by this call, otherwise %false.
*/
bool kernfs_remove_self(struct kernfs_node *kn)
{
@@ -1627,7 +1642,8 @@ bool kernfs_remove_self(struct kernfs_node *kn)
* @ns: namespace tag of the kernfs_node to remove
*
* Look for the kernfs_node with @name and @ns under @parent and remove it.
- * Returns 0 on success, -ENOENT if such entry doesn't exist.
+ *
+ * Return: %0 on success, -ENOENT if such entry doesn't exist.
*/
int kernfs_remove_by_name_ns(struct kernfs_node *parent, const char *name,
const void *ns)
@@ -1665,6 +1681,8 @@ int kernfs_remove_by_name_ns(struct kernfs_node *parent, const char *name,
* @new_parent: new parent to put @sd under
* @new_name: new name
* @new_ns: new namespace tag
+ *
+ * Return: %0 on success, -errno on failure.
*/
int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent,
const char *new_name, const void *new_ns)
diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 9ab6c92e02dab..e4a50e4ff0d23 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -33,7 +33,7 @@ struct kernfs_open_node {
* pending queue is implemented as a singly linked list of kernfs_nodes.
* The list is terminated with the self pointer so that whether a
* kernfs_node is on the list or not can be determined by testing the next
- * pointer for NULL.
+ * pointer for %NULL.
*/
#define KERNFS_NOTIFY_EOL ((void *)&kernfs_notify_list)
@@ -59,8 +59,10 @@ static inline struct mutex *kernfs_open_file_mutex_lock(struct kernfs_node *kn)
}
/**
- * of_on - Return the kernfs_open_node of the specified kernfs_open_file
- * @of: taret kernfs_open_file
+ * of_on - Get the kernfs_open_node of the specified kernfs_open_file
+ * @of: target kernfs_open_file
+ *
+ * Return: the kernfs_open_node of the kernfs_open_file
*/
static struct kernfs_open_node *of_on(struct kernfs_open_file *of)
{
@@ -82,6 +84,8 @@ static struct kernfs_open_node *of_on(struct kernfs_open_file *of)
* outside RCU read-side critical section.
*
* The caller needs to make sure that kernfs_open_file_mutex is held.
+ *
+ * Return: @kn->attr.open when kernfs_open_file_mutex is held.
*/
static struct kernfs_open_node *
kernfs_deref_open_node_locked(struct kernfs_node *kn)
@@ -548,11 +552,11 @@ static int kernfs_fop_mmap(struct file *file, struct vm_area_struct *vma)
* If @kn->attr.open exists, increment its reference count; otherwise,
* create one. @of is chained to the files list.
*
- * LOCKING:
+ * Locking:
* Kernel thread context (may sleep).
*
- * RETURNS:
- * 0 on success, -errno on failure.
+ * Return:
+ * %0 on success, -errno on failure.
*/
static int kernfs_get_open_node(struct kernfs_node *kn,
struct kernfs_open_file *of)
@@ -1024,7 +1028,7 @@ const struct file_operations kernfs_file_fops = {
* @ns: optional namespace tag of the file
* @key: lockdep key for the file's active_ref, %NULL to disable lockdep
*
- * Returns the created node on success, ERR_PTR() value on error.
+ * Return: the created node on success, ERR_PTR() value on error.
*/
struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
const char *name,
diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
index 3d783d80f5daa..076ba9884916c 100644
--- a/fs/kernfs/inode.c
+++ b/fs/kernfs/inode.c
@@ -94,7 +94,7 @@ int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
* @kn: target node
* @iattr: iattr to set
*
- * Returns 0 on success, -errno on failure.
+ * Return: %0 on success, -errno on failure.
*/
int kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
{
@@ -241,11 +241,11 @@ static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode)
* allocated and basics are initialized. New inode is returned
* locked.
*
- * LOCKING:
+ * Locking:
* Kernel thread context (may sleep).
*
- * RETURNS:
- * Pointer to allocated inode on success, NULL on failure.
+ * Return:
+ * Pointer to allocated inode on success, %NULL on failure.
*/
struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn)
{
diff --git a/fs/kernfs/kernfs-internal.h b/fs/kernfs/kernfs-internal.h
index fc5821effd97d..9046d9f39e635 100644
--- a/fs/kernfs/kernfs-internal.h
+++ b/fs/kernfs/kernfs-internal.h
@@ -58,7 +58,7 @@ struct kernfs_root {
* kernfs_root - find out the kernfs_root a kernfs_node belongs to
* @kn: kernfs_node of interest
*
- * Return the kernfs_root @kn belongs to.
+ * Return: the kernfs_root @kn belongs to.
*/
static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn)
{
diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c
index d0859f72d2d64..e08e8d9998070 100644
--- a/fs/kernfs/mount.c
+++ b/fs/kernfs/mount.c
@@ -153,7 +153,7 @@ static const struct export_operations kernfs_export_ops = {
* kernfs_root_from_sb - determine kernfs_root associated with a super_block
* @sb: the super_block in question
*
- * Return the kernfs_root associated with @sb. If @sb is not a kernfs one,
+ * Return: the kernfs_root associated with @sb. If @sb is not a kernfs one,
* %NULL is returned.
*/
struct kernfs_root *kernfs_root_from_sb(struct super_block *sb)
@@ -167,7 +167,7 @@ struct kernfs_root *kernfs_root_from_sb(struct super_block *sb)
* find the next ancestor in the path down to @child, where @parent was the
* ancestor whose descendant we want to find.
*
- * Say the path is /a/b/c/d. @child is d, @parent is NULL. We return the root
+ * Say the path is /a/b/c/d. @child is d, @parent is %NULL. We return the root
* node. If @parent is b, then we return the node for c.
* Passing in d as @parent is not ok.
*/
@@ -192,6 +192,8 @@ static struct kernfs_node *find_next_ancestor(struct kernfs_node *child,
* kernfs_node_dentry - get a dentry for the given kernfs_node
* @kn: kernfs_node for which a dentry is needed
* @sb: the kernfs super_block
+ *
+ * Return: the dentry pointer
*/
struct dentry *kernfs_node_dentry(struct kernfs_node *kn,
struct super_block *sb)
@@ -296,7 +298,7 @@ static int kernfs_set_super(struct super_block *sb, struct fs_context *fc)
* kernfs_super_ns - determine the namespace tag of a kernfs super_block
* @sb: super_block of interest
*
- * Return the namespace tag associated with kernfs super_block @sb.
+ * Return: the namespace tag associated with kernfs super_block @sb.
*/
const void *kernfs_super_ns(struct super_block *sb)
{
@@ -313,6 +315,8 @@ const void *kernfs_super_ns(struct super_block *sb)
* implementation, which should set the specified ->@fs_type and ->@flags, and
* specify the hierarchy and namespace tag to mount via ->@root and ->@ns,
* respectively.
+ *
+ * Return: %0 on success, -errno on failure.
*/
int kernfs_get_tree(struct fs_context *fc)
{
diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c
index 0ab13824822f7..45371a70caa71 100644
--- a/fs/kernfs/symlink.c
+++ b/fs/kernfs/symlink.c
@@ -19,7 +19,7 @@
* @name: name of the symlink
* @target: target node for the symlink to point to
*
- * Returns the created node on success, ERR_PTR() value on error.
+ * Return: the created node on success, ERR_PTR() value on error.
* Ownership of the link matches ownership of the target.
*/
struct kernfs_node *kernfs_create_link(struct kernfs_node *parent,
