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>

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/user.c b/kernel/user.c
index f42a68e008fd..9cb6f6403561 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) {