kernel_optimize_test/ipc
Manfred Spraul 2e5ceb452c ipc/util.c: correct comment in ipc_obtain_object_check
The comment that explains ipc_obtain_object_check is wrong: The function
checks the sequence number, not the reference counter.

Note that checking the reference counter would be meaningless: The
reference counter is decreased without holding any locks, thus an object
with kern_ipc_perm.deleted=true may disappear at the end of the next rcu
grace period.

Link: http://lkml.kernel.org/r/20180712185241.4017-6-manfred@colorfullife.com
Signed-off-by: Manfred Spraul <manfred@colorfullife.com>
Reviewed-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Kees Cook <keescook@chromium.org>
Cc: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-22 10:52:52 -07:00
..
compat.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ipc_sysctl.c ipc/msg: increase MSGMNI, remove scaling 2014-12-13 12:42:52 -08:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mq_sysctl.c ipc: convert use of typedef ctl_table to struct ctl_table 2014-06-06 16:08:16 -07:00
mqueue.c y2038: ipc: Enable COMPAT_32BIT_TIME 2018-04-20 16:20:27 +02:00
msg.c ipc: rename ipcctl_pre_down_nolock() 2018-08-22 10:52:51 -07:00
msgutil.c ipc: convert ipc_namespace.count from atomic_t to refcount_t 2017-09-08 18:26:51 -07:00
namespace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sem.c ipc: rename ipcctl_pre_down_nolock() 2018-08-22 10:52:51 -07:00
shm.c ipc: rename ipcctl_pre_down_nolock() 2018-08-22 10:52:51 -07:00
syscall.c y2038: ipc: Redirect ipc(SEMTIMEDOP, ...) to compat_ksys_semtimedop 2018-04-20 16:20:30 +02:00
util.c ipc/util.c: correct comment in ipc_obtain_object_check 2018-08-22 10:52:52 -07:00
util.h ipc: rename ipcctl_pre_down_nolock() 2018-08-22 10:52:51 -07:00