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authorAlexey Dobriyan <adobriyan@sw.ru>2007-10-16 23:30:09 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-10-17 08:42:59 -0700
commit970a8645ca051225a32401e4c80b50fc0a49c081 (patch)
tree25600770b729500354d025f078d0ce9f655bdea4
parent40aeb400f68090f92010920ddf284b672a1461b8 (diff)
downloadop-kernel-dev-970a8645ca051225a32401e4c80b50fc0a49c081.zip
op-kernel-dev-970a8645ca051225a32401e4c80b50fc0a49c081.tar.gz
user.c: #ifdef ->mq_bytes
For those who deselect POSIX message queues. Reduces SLAB size of user_struct from 64 to 32 bytes here, SLUB size -- from 40 bytes to 32 bytes. [akpm@linux-foundation.org: fix build] Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/sched.h2
-rw-r--r--kernel/user.c4
2 files changed, 4 insertions, 2 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 5716658..884699f 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -518,8 +518,10 @@ struct user_struct {
atomic_t inotify_watches; /* How many inotify watches does this user have? */
atomic_t inotify_devs; /* How many inotify devs does this user have opened? */
#endif
+#ifdef CONFIG_POSIX_MQUEUE
/* protected by mq_lock */
unsigned long mq_bytes; /* How many bytes can be allocated to mqueue? */
+#endif
unsigned long locked_shm; /* How many pages of mlocked shm ? */
#ifdef CONFIG_KEYS
diff --git a/kernel/user.c b/kernel/user.c
index f42a68e..9cb6f64 100644
--- a/kernel/user.c
+++ b/kernel/user.c
@@ -44,7 +44,6 @@ struct user_struct root_user = {
.processes = ATOMIC_INIT(1),
.files = ATOMIC_INIT(0),
.sigpending = ATOMIC_INIT(0),
- .mq_bytes = 0,
.locked_shm = 0,
#ifdef CONFIG_KEYS
.uid_keyring = &root_user_keyring,
@@ -341,8 +340,9 @@ struct user_struct * alloc_uid(struct user_namespace *ns, uid_t uid)
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;
if (alloc_uid_keyring(new, current) < 0) {
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