openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

[PATCH] ipc: replace kmalloc and memset in get_undo_list with kzalloc 

Simplify get_undo_list() by dropping the unnecessary cast, removing the
size variable, and switching to kzalloc() instead of a kmalloc() followed
by a memset().

This cleanup was split then modified from Jes Sorenson's Task Notifiers
patches.

Signed-off-by: Matt Helsley <matthltc@us.ibm.com>
Cc: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Matt Helsley 2006-10-02 02:18:25 -07:00 committed by Linus Torvalds
parent 5d124e99c2
commit 2453a3062d
1 changed files with 1 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
ipc/sem.c
View File

@ -1003,15 +1003,12 @@ static inline void unlock_semundo(void)
static inline int get_undo_list(struct sem_undo_list **undo_listp) static inline int get_undo_list(struct sem_undo_list **undo_listp)
{ {
struct sem_undo_list *undo_list; struct sem_undo_list *undo_list;
int size;
undo_list = current->sysvsem.undo_list; undo_list = current->sysvsem.undo_list;
if (!undo_list) { if (!undo_list) {
size = sizeof(struct sem_undo_list); undo_list = kzalloc(sizeof(*undo_list), GFP_KERNEL);
undo_list = (struct sem_undo_list *) kmalloc(size, GFP_KERNEL);
if (undo_list == NULL) if (undo_list == NULL)
return -ENOMEM; return -ENOMEM;
memset(undo_list, 0, size);
spin_lock_init(&undo_list->lock); spin_lock_init(&undo_list->lock);
atomic_set(&undo_list->refcnt, 1); atomic_set(&undo_list->refcnt, 1);
current->sysvsem.undo_list = undo_list; current->sysvsem.undo_list = undo_list;