Johannes Berg d7127b5e5f locking/barriers: Don't use sizeof(void) in lockless_dereference() ... My previous commit: 112dc0c806 ("locking/barriers: Suppress sparse warnings in lockless_dereference()") caused sparse to complain that (in radix-tree.h) we use sizeof(void) since that rcu_dereference()s a void *. Really, all we need is to have the expression *p in here somewhere to make sure p is a pointer type, and sizeof(*p) was the thing that came to my mind first to make sure that's done without really doing anything at runtime. Another thing I had considered was using typeof(*p), but obviously we can't just declare a typeof(*p) variable either, since that may end up being void. Declaring a variable as typeof(*p)* gets around that, and still checks that typeof(*p) is valid, so do that. This type construction can't be done for _________p1 because that will actually be used and causes sparse address space warnings, so keep a separate unused variable for it. Reported-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul E . McKenney <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: kbuild-all@01.org Fixes: 112dc0c806 ("locking/barriers: Suppress sparse warnings in lockless_dereference()") Link: http://lkml.kernel.org/r/1472192160-4049-1-git-send-email-johannes@sipsolutions.net Signed-off-by: Ingo Molnar <mingo@kernel.org>		2016-09-05 11:50:42 +02:00
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acpi	…
asm-generic	mm/usercopy: get rid of CONFIG_DEBUG_STRICT_USER_COPY_CHECKS	2016-08-30 10:10:21 -07:00
clocksource	…
crypto	…
drm	Merge branch 'drm-next-4.8' of git://people.freedesktop.org/~agd5f/linux into drm-next	2016-08-08 16:45:33 +10:00
dt-bindings	…
keys	…
kvm	…
linux	locking/barriers: Don't use sizeof(void) in lockless_dereference()	2016-09-05 11:50:42 +02:00
math-emu	…
media	…
memory	…
misc	…
net	tcp: fix use after free in tcp_xmit_retransmit_queue()	2016-08-18 23:22:57 -07:00
pcmcia	…
ras	…
rdma	IB/core: Use memdup_user() rather than duplicating its implementation	2016-08-23 12:40:13 -04:00
rxrpc	…
scsi	…
soc	…
sound	…
target	…
trace	Luiz Capitulino noticed that the tick_stop tracepoint wasn't being parsed	2016-08-09 10:34:09 -07:00
uapi	include/uapi/linux/ipx.h: fix conflicting defitions with glibc netipx/ipx.h	2016-08-22 16:25:15 -07:00
video	…
xen	xen: change the type of xen_vcpu_id to uint32_t	2016-08-24 18:17:27 +01:00
Kbuild	…