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Diffstat (limited to 'ANDROID_3.4.5/include/linux/blockgroup_lock.h')
-rw-r--r--ANDROID_3.4.5/include/linux/blockgroup_lock.h62
1 files changed, 0 insertions, 62 deletions
diff --git a/ANDROID_3.4.5/include/linux/blockgroup_lock.h b/ANDROID_3.4.5/include/linux/blockgroup_lock.h
deleted file mode 100644
index e44b88ba..00000000
--- a/ANDROID_3.4.5/include/linux/blockgroup_lock.h
+++ /dev/null
@@ -1,62 +0,0 @@
-#ifndef _LINUX_BLOCKGROUP_LOCK_H
-#define _LINUX_BLOCKGROUP_LOCK_H
-/*
- * Per-blockgroup locking for ext2 and ext3.
- *
- * Simple hashed spinlocking.
- */
-
-#include <linux/spinlock.h>
-#include <linux/cache.h>
-
-#ifdef CONFIG_SMP
-
-/*
- * We want a power-of-two. Is there a better way than this?
- */
-
-#if NR_CPUS >= 32
-#define NR_BG_LOCKS 128
-#elif NR_CPUS >= 16
-#define NR_BG_LOCKS 64
-#elif NR_CPUS >= 8
-#define NR_BG_LOCKS 32
-#elif NR_CPUS >= 4
-#define NR_BG_LOCKS 16
-#elif NR_CPUS >= 2
-#define NR_BG_LOCKS 8
-#else
-#define NR_BG_LOCKS 4
-#endif
-
-#else /* CONFIG_SMP */
-#define NR_BG_LOCKS 1
-#endif /* CONFIG_SMP */
-
-struct bgl_lock {
- spinlock_t lock;
-} ____cacheline_aligned_in_smp;
-
-struct blockgroup_lock {
- struct bgl_lock locks[NR_BG_LOCKS];
-};
-
-static inline void bgl_lock_init(struct blockgroup_lock *bgl)
-{
- int i;
-
- for (i = 0; i < NR_BG_LOCKS; i++)
- spin_lock_init(&bgl->locks[i].lock);
-}
-
-/*
- * The accessor is a macro so we can embed a blockgroup_lock into different
- * superblock types
- */
-static inline spinlock_t *
-bgl_lock_ptr(struct blockgroup_lock *bgl, unsigned int block_group)
-{
- return &bgl->locks[(block_group) & (NR_BG_LOCKS-1)].lock;
-}
-
-#endif