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klist: fix coding style errors in klist.h and klist.c 

Finally clean up the odd spacing in these files.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman 2008-04-30 16:43:45 -07:00
parent c3b19ff06e
commit c3bb7fadaf
2 changed files with 100 additions and 136 deletions
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66
lib/klist.c
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@ -1,11 +1,14 @@
/*
* klist.c - Routines for manipulating klists.
*
* Copyright (C) 2005 Patrick Mochel
*
* This file is released under the GPL v2.
*
* This klist interface provides a couple of structures that wrap around
* struct list_head to provide explicit list "head" (struct klist) and
* list "node" (struct klist_node) objects. For struct klist, a spinlock
* is included that protects access to the actual list itself. struct
* struct list_head to provide explicit list "head" (struct klist) and list
* "node" (struct klist_node) objects. For struct klist, a spinlock is
* included that protects access to the actual list itself. struct
* klist_node provides a pointer to the klist that owns it and a kref
* reference count that indicates the number of current users of that node
* in the list.
@ -18,21 +21,17 @@
* It works using a 3rd object type - struct klist_iter - that is declared
* and initialized before an iteration. klist_next() is used to acquire the
* next element in the list. It returns NULL if there are no more items.
* Internally, that routine takes the klist's lock, decrements the reference
* count of the previous klist_node and increments the count of the next
* klist_node. It then drops the lock and returns.
* Internally, that routine takes the klist's lock, decrements the
* reference count of the previous klist_node and increments the count of
* the next klist_node. It then drops the lock and returns.
*
* There are primitives for adding and removing nodes to/from a klist.
* When deleting, klist_del() will simply decrement the reference count.
* Only when the count goes to 0 is the node removed from the list.
* klist_remove() will try to delete the node from the list and block
* until it is actually removed. This is useful for objects (like devices)
* that have been removed from the system and must be freed (but must wait
* until all accessors have finished).
*
* Copyright (C) 2005 Patrick Mochel
*
* This file is released under the GPL v2.
* klist_remove() will try to delete the node from the list and block until
* it is actually removed. This is useful for objects (like devices) that
* have been removed from the system and must be freed (but must wait until
* all accessors have finished).
*/
#include <linux/klist.h>
@ -51,7 +50,6 @@
* functions that take and release references on the embedding
* objects.
*/
void klist_init(struct klist *k, void (*get)(struct klist_node *),
void (*put)(struct klist_node *))
{
@ -60,10 +58,8 @@ void klist_init(struct klist * k, void (*get)(struct klist_node *),
k->get = get;
k->put = put;
}
EXPORT_SYMBOL_GPL(klist_init);
static void add_head(struct klist *k, struct klist_node *n)
{
spin_lock(&k->k_lock);
@ -78,7 +74,6 @@ static void add_tail(struct klist * k, struct klist_node * n)
spin_unlock(&k->k_lock);
}
static void klist_node_init(struct klist *k, struct klist_node *n)
{
INIT_LIST_HEAD(&n->n_node);
@ -89,37 +84,30 @@ static void klist_node_init(struct klist * k, struct klist_node * n)
k->get(n);
}
/**
* klist_add_head - Initialize a klist_node and add it to front.
* @n: node we're adding.
* @k: klist it's going on.
*/
void klist_add_head(struct klist_node *n, struct klist *k)
{
klist_node_init(k, n);
add_head(k, n);
}
EXPORT_SYMBOL_GPL(klist_add_head);
/**
* klist_add_tail - Initialize a klist_node and add it to back.
* @n: node we're adding.
* @k: klist it's going on.
*/
void klist_add_tail(struct klist_node *n, struct klist *k)
{
klist_node_init(k, n);
add_tail(k, n);
}
EXPORT_SYMBOL_GPL(klist_add_tail);
/**
* klist_add_after - Init a klist_node and add it after an existing node
* @n: node we're adding.
@ -152,7 +140,6 @@ void klist_add_before(struct klist_node *n, struct klist_node *pos)
}
EXPORT_SYMBOL_GPL(klist_add_before);
static void klist_release(struct kref *kref)
{
struct klist_node *n = container_of(kref, struct klist_node, n_ref);
@ -167,12 +154,10 @@ static int klist_dec_and_del(struct klist_node * n)
return kref_put(&n->n_ref, klist_release);
}
/**
* klist_del - Decrement the reference count of node and try to remove.
* @n: node we're deleting.
*/
void klist_del(struct klist_node *n)
{
struct klist *k = n->n_klist;
@ -185,37 +170,29 @@ void klist_del(struct klist_node * n)
if (put)
put(n);
}
EXPORT_SYMBOL_GPL(klist_del);
/**
* klist_remove - Decrement the refcount of node and wait for it to go away.
* @n: node we're removing.
*/
void klist_remove(struct klist_node *n)
{
klist_del(n);
wait_for_completion(&n->n_removed);
}
EXPORT_SYMBOL_GPL(klist_remove);
/**
* klist_node_attached - Say whether a node is bound to a list or not.
* @n: Node that we're testing.
*/
int klist_node_attached(struct klist_node *n)
{
return (n->n_klist != NULL);
}
EXPORT_SYMBOL_GPL(klist_node_attached);
/**
* klist_iter_init_node - Initialize a klist_iter structure.
* @k: klist we're iterating.
@ -225,8 +202,8 @@ EXPORT_SYMBOL_GPL(klist_node_attached);
* Similar to klist_iter_init(), but starts the action off with @n,
* instead of with the list head.
*/
void klist_iter_init_node(struct klist * k, struct klist_iter * i, struct klist_node * n)
void klist_iter_init_node(struct klist *k, struct klist_iter *i,
struct klist_node *n)
{
i->i_klist = k;
i->i_head = &k->k_list;
@ -234,10 +211,8 @@ void klist_iter_init_node(struct klist * k, struct klist_iter * i, struct klist_
if (n)
kref_get(&n->n_ref);
}
EXPORT_SYMBOL_GPL(klist_iter_init_node);
/**
* klist_iter_init - Iniitalize a klist_iter structure.
* @k: klist we're iterating.
@ -245,15 +220,12 @@ EXPORT_SYMBOL_GPL(klist_iter_init_node);
*
* Similar to klist_iter_init_node(), but start with the list head.
*/
void klist_iter_init(struct klist *k, struct klist_iter *i)
{
klist_iter_init_node(k, i, NULL);
}
EXPORT_SYMBOL_GPL(klist_iter_init);
/**
* klist_iter_exit - Finish a list iteration.
* @i: Iterator structure.
@ -262,7 +234,6 @@ EXPORT_SYMBOL_GPL(klist_iter_init);
* refcount of the current node. Necessary in case iteration exited before
* the end of the list was reached, and always good form.
*/
void klist_iter_exit(struct klist_iter *i)
{
if (i->i_cur) {
@ -270,16 +241,13 @@ void klist_iter_exit(struct klist_iter * i)
i->i_cur = NULL;
}
}
EXPORT_SYMBOL_GPL(klist_iter_exit);
static struct klist_node *to_klist_node(struct list_head *n)
{
return container_of(n, struct klist_node, n_node);
}
/**
* klist_next - Ante up next node in list.
* @i: Iterator structure.
@ -288,7 +256,6 @@ static struct klist_node * to_klist_node(struct list_head * n)
* node, if there was one. Grab the next node, increment its reference
* count, drop the lock, and return that next node.
*/
struct klist_node *klist_next(struct klist_iter *i)
{
struct list_head *next;
@ -314,7 +281,4 @@ struct klist_node * klist_next(struct klist_iter * i)
put(lnode);
return knode;
}
EXPORT_SYMBOL_GPL(klist_next);