The patch titled
driver base: memory: semaphore to mutex
has been added to the -mm tree. Its filename is
driver-base-memory-semaphore-to-mutex.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: driver base: memory: semaphore to mutex
From: Daniel Walker <dwalker@xxxxxxxxxx>
Signed-off-by: Daniel Walker <dwalker@xxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/base/memory.c | 7 ++++---
include/linux/memory.h | 5 ++---
mm/memory_hotplug.c | 2 +-
3 files changed, 7 insertions(+), 7 deletions(-)
diff -puN drivers/base/memory.c~driver-base-memory-semaphore-to-mutex drivers/base/memory.c
--- a/drivers/base/memory.c~driver-base-memory-semaphore-to-mutex
+++ a/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(str
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(str
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 lon
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 -puN include/linux/memory.h~driver-base-memory-semaphore-to-mutex include/linux/memory.h
--- a/include/linux/memory.h~driver-base-memory-semaphore-to-mutex
+++ a/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 -puN mm/memory_hotplug.c~driver-base-memory-semaphore-to-mutex mm/memory_hotplug.c
--- a/mm/memory_hotplug.c~driver-base-memory-semaphore-to-mutex
+++ a/mm/memory_hotplug.c
@@ -208,7 +208,7 @@ int online_pages(unsigned long pfn, unsi
/*
* 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);
_
Patches currently in -mm which might be from dwalker@xxxxxxxxxx are
ps3-vuart-fix-error-path-locking.patch
driver-base-memory-semaphore-to-mutex.patch
git-dvb.patch
git-x86.patch
page-allocator-clean-up-pcp-draining-functions-swsusp-fix.patch
page-allocator-clean-up-pcp-draining-functions-swsusp-fix-fix.patch
drivers-char-tty_ioc-remove-pty_sem.patch
drivers-isdn-i4l-isdn_ttyc-remove-write_sem.patch
unix98-allocated_ptys_lock-semaphore-to-mutex.patch
docs-kernel-locking-convert-semaphore-references.patch
stopmachine-semaphore-to-mutex.patch
stopmachine-semaphore-to-mutex-fix.patch
amiga-serial-driver-port_write_mutex-fixup.patch
isapnp-driver-semaphore-to-mutex.patch
isapnp-driver-semaphore-to-mutex-fix.patch
isapnp-driver-semaphore-to-mutex-fix-fix.patch
profile-likely-unlikely-macros.patch
profile-likely-unlikely-macros-fix.patch
-
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