KOSAKI Motohiro cef0184c11 mqueue: separate mqueue default value from maximum value ... Commit b231cca438 ("message queues: increase range limits") changed mqueue default value when attr parameter is specified NULL from hard coded value to fs.mqueue.{msg,msgsize}_max sysctl value. This made large side effect. When user need to use two mqueue applications 1) using !NULL attr parameter and it require big message size and 2) using NULL attr parameter and only need small size message, app (1) require to raise fs.mqueue.msgsize_max and app (2) consume large memory size even though it doesn't need. Doug Ledford propsed to switch back it to static hard coded value. However it also has a compatibility problem. Some applications might started depend on the default value is tunable. The solution is to separate default value from maximum value. Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Doug Ledford <dledford@redhat.com> Acked-by: Doug Ledford <dledford@redhat.com> Acked-by: Joe Korty <joe.korty@ccur.com> Cc: Amerigo Wang <amwang@redhat.com> Acked-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Jiri Slaby <jslaby@suse.cz> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2012-05-31 17:49:31 -07:00
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compat_mq.c	ipc: initialize structure memory to zero for compat functions	2010-10-27 18:03:13 -07:00
compat.c	[PATCH v3] ipc: provide generic compat versions of IPC syscalls	2012-03-15 13:13:38 -04:00
ipc_sysctl.c	ipc: introduce shm_rmid_forced sysctl	2011-07-26 16:49:44 -07:00
ipcns_notifier.c
Makefile	Add generic sys_ipc wrapper	2010-03-12 15:52:32 -08:00
mq_sysctl.c	mqueue: separate mqueue default value from maximum value	2012-05-31 17:49:31 -07:00
mqueue.c	mqueue: separate mqueue default value from maximum value	2012-05-31 17:49:31 -07:00
msg.c	Fix common misspellings	2011-03-31 11:26:23 -03:00
msgutil.c	security: trim security.h	2012-02-14 10:45:42 +11:00
namespace.c	userns: Use cred->user_ns instead of cred->user->user_ns	2012-04-07 16:55:51 -07:00
sem.c	ipc/sem.c: remove private structures from public header file	2011-11-02 16:07:01 -07:00
shm.c	hugetlbfs: fix alignment of huge page requests	2012-03-21 17:54:59 -07:00
syscall.c	ppc64 sys_ipc breakage in 2.6.34-rc2	2010-03-22 09:57:19 -07:00
util.c	ipc,rcu: Convert call_rcu(ipc_immediate_free) to kfree_rcu()	2011-07-20 14:10:16 -07:00
util.h	userns: user namespaces: convert several capable() calls	2011-03-23 19:47:08 -07:00