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authorJeff Dike <jdike@addtoit.com>2007-02-10 01:44:23 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-11 10:51:23 -0800
commitd9f9d31983aac7764d178583d0777199d081cb1a (patch)
treeb6daa94740a71f498287c7fd436980962ec66418 /arch
parentf2e62992a232544d612b7b95e932fbf3592944e1 (diff)
downloadlinux-d9f9d31983aac7764d178583d0777199d081cb1a.tar.gz
[PATCH] uml: SIGIO locking comment
Comment the use of a mysterious-looking lock.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/um/kernel/sigio.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/um/kernel/sigio.c b/arch/um/kernel/sigio.c
index 2b0ab438301c..1c831f9ee09f 100644
--- a/arch/um/kernel/sigio.c
+++ b/arch/um/kernel/sigio.c
@@ -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)