Commit 80491eb9 authored Nov 04, 2006 by Linus Torvalds

Revert unintentional "volatile" changes in ipc/msg.c



Commit 5a06a363 ("[PATCH] ipc/msg.c:
clean up coding style") breaks fakeroot on Alpha (variously hangs or
oopses), according to a report by Falk Hueffner.

The fact that the code seems to rely on compiler access ordering through
the use of "volatile" is a pretty certain sign that the code has locking
problems, and we should fix those properly and then remove the whole
"volatile" entirely.

But in the meantime, the movement of "volatile" was unintentional, and
should be reverted.

Cc: Falk Hueffner <falk@debian.org>
Cc: Andrew Morton <akpm@osdl.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent ddac0d39

ipc/msg.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -52,7 +52,7 @@ struct msg_receiver {
		long r_msgtype;
		long r_maxsize;

		volatile struct msg_msg *r_msg;
		struct msg_msg *volatile r_msg;
		};

		/* one msg_sender for each sleeping sender */

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