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authorDaniel Walker <dwalker@mvista.com>2008-02-04 23:35:47 -0800
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-19 19:10:19 -0700
commitda19cbcf71cde3c09587b5924d113f0c7f1fd23a (patch)
treef1731d6a0f8606afcc283c5540055d8e56bb7309
parent610ad5064cb90aec35f5837bbde3d316fe02aca7 (diff)
downloadop-kernel-dev-da19cbcf71cde3c09587b5924d113f0c7f1fd23a.zip
op-kernel-dev-da19cbcf71cde3c09587b5924d113f0c7f1fd23a.tar.gz
driver core: memory: semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/base/memory.c7
-rw-r--r--include/linux/memory.h5
-rw-r--r--mm/memory_hotplug.c2
3 files changed, 7 insertions, 7 deletions
diff --git a/drivers/base/memory.c b/drivers/base/memory.c
index 7ae413f..1f3801a 100644
--- a/drivers/base/memory.c
+++ b/drivers/base/memory.c
@@ -20,6 +20,7 @@
#include <linux/kobject.h>
#include <linux/memory_hotplug.h>
#include <linux/mm.h>
+#include <linux/mutex.h>
#include <asm/atomic.h>
#include <asm/uaccess.h>
@@ -205,7 +206,7 @@ static int memory_block_change_state(struct memory_block *mem,
unsigned long to_state, unsigned long from_state_req)
{
int ret = 0;
- down(&mem->state_sem);
+ mutex_lock(&mem->state_mutex);
if (mem->state != from_state_req) {
ret = -EINVAL;
@@ -217,7 +218,7 @@ static int memory_block_change_state(struct memory_block *mem,
mem->state = to_state;
out:
- up(&mem->state_sem);
+ mutex_unlock(&mem->state_mutex);
return ret;
}
@@ -341,7 +342,7 @@ static int add_memory_block(unsigned long node_id, struct mem_section *section,
mem->phys_index = __section_nr(section);
mem->state = state;
- init_MUTEX(&mem->state_sem);
+ mutex_init(&mem->state_mutex);
mem->phys_device = phys_device;
ret = register_memory(mem, section, NULL);
diff --git a/include/linux/memory.h b/include/linux/memory.h
index 33f0ff0..f80e0e3 100644
--- a/include/linux/memory.h
+++ b/include/linux/memory.h
@@ -18,8 +18,7 @@
#include <linux/sysdev.h>
#include <linux/node.h>
#include <linux/compiler.h>
-
-#include <asm/semaphore.h>
+#include <linux/mutex.h>
struct memory_block {
unsigned long phys_index;
@@ -30,7 +29,7 @@ struct memory_block {
* created long after the critical areas during
* initialization.
*/
- struct semaphore state_sem;
+ struct mutex state_mutex;
int phys_device; /* to which fru does this belong? */
void *hw; /* optional pointer to fw/hw data */
int (*phys_callback)(struct memory_block *);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 7469c50..0fb3302 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -208,7 +208,7 @@ int online_pages(unsigned long pfn, unsigned long nr_pages)
/*
* This doesn't need a lock to do pfn_to_page().
* The section can't be removed here because of the
- * memory_block->state_sem.
+ * memory_block->state_mutex.
*/
zone = page_zone(pfn_to_page(pfn));
pgdat_resize_lock(zone->zone_pgdat, &flags);
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