From e98fa28160eabdcda4c4c5bf7af7a3256c10c922 Mon Sep 17 00:00:00 2001 From: Daniel Walker Date: Mon, 4 Feb 2008 22:31:27 -0800 Subject: [PATCH] uml: mconsole mutex conversion The plug_mem_mutex is already used as a mutex since it's using DECLARE_MUTEX(), but the underlying construct is still a semaphore .. This patch switches it over to a struct mutex. Signed-off-by: Daniel Walker Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/drivers/mconsole_kern.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c index 949037e92a..9820fdbb9c 100644 --- a/arch/um/drivers/mconsole_kern.c +++ b/arch/um/drivers/mconsole_kern.c @@ -17,6 +17,7 @@ #include "linux/syscalls.h" #include "linux/utsname.h" #include "linux/workqueue.h" +#include "linux/mutex.h" #include "asm/uaccess.h" #include "init.h" #include "irq_kern.h" @@ -360,7 +361,7 @@ struct unplugged_pages { void *pages[UNPLUGGED_PER_PAGE]; }; -static DECLARE_MUTEX(plug_mem_mutex); +static DEFINE_MUTEX(plug_mem_mutex); static unsigned long long unplugged_pages_count = 0; static LIST_HEAD(unplugged_pages); static int unplug_index = UNPLUGGED_PER_PAGE; @@ -396,7 +397,7 @@ static int mem_config(char *str, char **error_out) diff /= PAGE_SIZE; - down(&plug_mem_mutex); + mutex_lock(&plug_mem_mutex); for (i = 0; i < diff; i++) { struct unplugged_pages *unplugged; void *addr; @@ -453,7 +454,7 @@ static int mem_config(char *str, char **error_out) err = 0; out_unlock: - up(&plug_mem_mutex); + mutex_unlock(&plug_mem_mutex); out: return err; } -- 2.39.5