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| author | Andrew Morton <akpm@linux-foundation.org> | 2008-04-30 00:54:54 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:53 -0700 |
| commit | 354a1f4d99240f53980275416ca3e1ac2ee73d5d (patch) | |
| tree | 2c595555d897a5cc09b6449cb0cd3aac9c11ac79 /kernel/user.c | |
| parent | 487798df6d25e76ed6558b3e17c44cf0458cc6f3 (diff) | |
| download | linux-354a1f4d99240f53980275416ca3e1ac2ee73d5d.tar.gz linux-354a1f4d99240f53980275416ca3e1ac2ee73d5d.tar.bz2 linux-354a1f4d99240f53980275416ca3e1ac2ee73d5d.zip | |
alloc_uid: cleanup
Use kmem_cache_zalloc(), remove large amounts of initialisation code and
ifdeffery.
Note: this assumes that memset(*atomic_t, 0) correctly initialises the
atomic_t. This is true for all present archtiectures and if it becomes false
for a future architecture then we'll need to make large changes all over the
place anyway.
Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/user.c')
| -rw-r--r-- | kernel/user.c | 18 |
1 files changed, 2 insertions, 16 deletions
diff --git a/kernel/user.c b/kernel/user.c index aefbbfa3159f..865ecf57a096 100644 --- a/kernel/user.c +++ b/kernel/user.c @@ -384,7 +384,7 @@ void free_uid(struct user_struct *up) local_irq_restore(flags); } -struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid) +struct user_struct *alloc_uid(struct user_namespace *ns, uid_t uid) { struct hlist_head *hashent = uidhashentry(ns, uid); struct user_struct *up, *new; @@ -399,26 +399,12 @@ struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid) spin_unlock_irq(&uidhash_lock); if (!up) { - new = kmem_cache_alloc(uid_cachep, GFP_KERNEL); + new = kmem_cache_zalloc(uid_cachep, GFP_KERNEL); if (!new) goto out_unlock; new->uid = uid; atomic_set(&new->__count, 1); - atomic_set(&new->processes, 0); - atomic_set(&new->files, 0); - atomic_set(&new->sigpending, 0); -#ifdef CONFIG_INOTIFY_USER - atomic_set(&new->inotify_watches, 0); - atomic_set(&new->inotify_devs, 0); -#endif -#ifdef CONFIG_POSIX_MQUEUE - new->mq_bytes = 0; -#endif - new->locked_shm = 0; -#ifdef CONFIG_KEYS - new->uid_keyring = new->session_keyring = NULL; -#endif if (sched_create_user(new) < 0) goto out_free_user; |