From: Jeff Dike <jdike@addtoit.com>
To: akpm@osdl.org
Cc: linux-kernel@vger.kernel.org,
user-mode-linux-devel@lists.sourceforge.net
Subject: [uml-devel] [PATCH 2/7] UML - SIGIO locking comment
Date: Wed, 07 Feb 2007 14:47:43 -0500 [thread overview]
Message-ID: <200702071947.l17JlhGW006605@ccure.user-mode-linux.org> (raw)
Comment the use of a mysterious-looking lock.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
--
arch/um/kernel/sigio.c | 1 +
1 file changed, 1 insertion(+)
Index: linux-2.6.18-mm/arch/um/kernel/sigio.c
===================================================================
--- linux-2.6.18-mm.orig/arch/um/kernel/sigio.c 2007-01-10 15:12:51.000000000 -0500
+++ linux-2.6.18-mm/arch/um/kernel/sigio.c 2007-01-10 15:44:08.000000000 -0500
@@ -42,6 +42,7 @@ int write_sigio_irq(int fd)
return(0);
}
+/* These are called from os-Linux/sigio.c to protect its pollfds arrays. */
static DEFINE_SPINLOCK(sigio_spinlock);
void sigio_lock(void)
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