Commit 4b2c551f authored by Lai Jiangshan's avatar Lai Jiangshan Committed by Al Viro
Browse files

lglock: add DEFINE_STATIC_LGLOCK() 



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

Signed-off-by: default avatarLai 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 466cab87

fs/file_table.c

+1 −1
Original line number Diff line number Diff line
@@ -36,7 +36,7 @@ struct files_stat_struct files_stat = { 
	.max_files = NR_FILE

};



DEFINE_LGLOCK(files_lglock);

DEFINE_STATIC_LGLOCK(files_lglock);



/* SLAB cache for file structures */

static struct kmem_cache *filp_cachep __read_mostly;

include/linux/lglock.h

+7 −1
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#define br_write_unlock(name)	lg_global_unlock(name)



#define DEFINE_BRLOCK(name)		DEFINE_LGLOCK(name)

#define DEFINE_STATIC_BRLOCK(name)	DEFINE_STATIC_LGLOCK(name)



#ifdef CONFIG_DEBUG_LOCK_ALLOC

#define LOCKDEP_INIT_MAP lockdep_init_map
@@ -53,6 +54,11 @@ struct lglock { 
	= __ARCH_SPIN_LOCK_UNLOCKED;					\

	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_local_lock(struct lglock *lg);

void lg_local_unlock(struct lglock *lg);

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