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From: Nathan Fontenot on 12 Jul 2010 11:50
This patch updates the name of the memory_block mutex
since it is now used for more than just gating changes
to the status of the memory section coveerd by the memory
sysfs directory.

Signed-off-by: Nathan Fontenot <nfont(a)austin.ibm.com>
---
drivers/base/memory.c | 20 ++++++++++----------
include/linux/memory.h | 9 +--------
2 files changed, 11 insertions(+), 18 deletions(-)

Index: linux-2.6/drivers/base/memory.c
===================================================================
--- linux-2.6.orig/drivers/base/memory.c 2010-07-09 14:38:09.000000000 -0500
+++ linux-2.6/drivers/base/memory.c 2010-07-09 14:38:18.000000000 -0500
@@ -242,7 +242,7 @@
struct list_head *pos;
int ret = 0;

- mutex_lock(&mem->state_mutex);
+ mutex_lock(&mem->mutex);

list_for_each(pos, &mem->sections) {
mbs = list_entry(pos, struct memory_block_section, next);
@@ -272,7 +272,7 @@
if (!ret)
mem->state = to_state;

- mutex_unlock(&mem->state_mutex);
+ mutex_unlock(&mem->mutex);
return ret;
}

@@ -352,7 +352,7 @@
if (list_is_singular(&mem->sections))
return -EINVAL;

- mutex_lock(&mem->state_mutex);
+ mutex_lock(&mem->mutex);

list_for_each(pos, &mem->sections) {
mbs = list_entry(pos, struct memory_block_section, next);
@@ -370,11 +370,11 @@
if (!new_mem_blk)
return -ENOMEM;

- mutex_init(&new_mem_blk->state_mutex);
+ mutex_init(&new_mem_blk->mutex);
INIT_LIST_HEAD(&new_mem_blk->sections);
new_mem_blk->state = mem->state;

- mutex_lock(&new_mem_blk->state_mutex);
+ mutex_lock(&new_mem_blk->mutex);

new_blk_total = total_scns / 2;
new_blk_min = max_scn_nr - new_blk_total + 1;
@@ -395,8 +395,8 @@
update_memory_block_phys_indexes(mem);
update_memory_block_phys_indexes(new_mem_blk);

- mutex_unlock(&new_mem_blk->state_mutex);
- mutex_unlock(&mem->state_mutex);
+ mutex_unlock(&new_mem_blk->mutex);
+ mutex_unlock(&mem->mutex);
return count;
}

@@ -653,7 +653,7 @@
return -ENOMEM;

mem->state = state;
- mutex_init(&mem->state_mutex);
+ mutex_init(&mem->mutex);
start_pfn = section_nr_to_pfn(__section_nr(section));
mem->phys_device = arch_get_memory_phys_device(start_pfn);
INIT_LIST_HEAD(&mem->sections);
@@ -680,7 +680,7 @@
int section_nr = __section_nr(section);

mem = find_memory_block(section);
- mutex_lock(&mem->state_mutex);
+ mutex_lock(&mem->mutex);

/* remove the specified section */
list_for_each_safe(pos, tmp, &mem->sections) {
@@ -692,7 +692,7 @@
}
}

- mutex_unlock(&mem->state_mutex);
+ mutex_unlock(&mem->mutex);

if (list_empty(&mem->sections)) {
unregister_mem_sect_under_nodes(mem);
Index: linux-2.6/include/linux/memory.h
===================================================================
--- linux-2.6.orig/include/linux/memory.h 2010-07-09 14:36:54.000000000 -0500
+++ linux-2.6/include/linux/memory.h 2010-07-09 14:38:18.000000000 -0500
@@ -31,14 +31,7 @@
unsigned long state;
unsigned long start_phys_index;
unsigned long end_phys_index;
-
- /*
- * This serializes all state change requests. It isn't
- * held during creation because the control files are
- * created long after the critical areas during
- * initialization.
- */
- struct mutex state_mutex;
+ struct mutex mutex;
int phys_device; /* to which fru does this belong? */
void *hw; /* optional pointer to fw/hw data */
int (*phys_callback)(struct memory_block *);
--
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Prev: [PATCH 3/7] Update the [register,unregister]_memory routines
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