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lglock: add DEFINE_STATIC_LGLOCK()

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When the lglock doesn't need to be exported we can use
DEFINE_STATIC_LGLOCK().

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Lai Jiangshan
2012-10-09 14:49:54 -07:00
committed by Al Viro
parent 466cab878e
commit 4b2c551f77
2 changed files with 8 additions and 2 deletions
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2
fs/file_table.c
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@@ -36,7 +36,7 @@ struct files_stat_struct files_stat = {
.max_files = NR_FILE .max_files = NR_FILE
}; };
DEFINE_LGLOCK(files_lglock); DEFINE_STATIC_LGLOCK(files_lglock);
/* SLAB cache for file structures */ /* SLAB cache for file structures */
static struct kmem_cache *filp_cachep __read_mostly; static struct kmem_cache *filp_cachep __read_mostly;

6
include/linux/lglock.h
View File

@@ -33,6 +33,7 @@
#define br_write_unlock(name) lg_global_unlock(name) #define br_write_unlock(name) lg_global_unlock(name)
#define DEFINE_BRLOCK(name) DEFINE_LGLOCK(name) #define DEFINE_BRLOCK(name) DEFINE_LGLOCK(name)
#define DEFINE_STATIC_BRLOCK(name) DEFINE_STATIC_LGLOCK(name)
#ifdef CONFIG_DEBUG_LOCK_ALLOC #ifdef CONFIG_DEBUG_LOCK_ALLOC
#define LOCKDEP_INIT_MAP lockdep_init_map #define LOCKDEP_INIT_MAP lockdep_init_map
@@ -53,6 +54,11 @@ struct lglock {
= __ARCH_SPIN_LOCK_UNLOCKED; \ = __ARCH_SPIN_LOCK_UNLOCKED; \
struct lglock name = { .lock = &name ## _lock } struct lglock name = { .lock = &name ## _lock }
#define DEFINE_STATIC_LGLOCK(name) \
static DEFINE_PER_CPU(arch_spinlock_t, name ## _lock) \
= __ARCH_SPIN_LOCK_UNLOCKED; \
static struct lglock name = { .lock = &name ## _lock }
void lg_lock_init(struct lglock *lg, char *name); void lg_lock_init(struct lglock *lg, char *name);
void lg_local_lock(struct lglock *lg); void lg_local_lock(struct lglock *lg);
void lg_local_unlock(struct lglock *lg); void lg_local_unlock(struct lglock *lg);