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-rw-r--r--fs/dcache.c22
-rw-r--r--fs/gfs2/glock.c6
-rw-r--r--include/linux/list_bl.h11
3 files changed, 19 insertions, 20 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index d600a0af3b2e..22a0ef41bad1 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -109,16 +109,6 @@ static inline struct hlist_bl_head *d_hash(struct dentry *parent,
return dentry_hashtable + (hash & D_HASHMASK);
}
-static inline void spin_lock_bucket(struct hlist_bl_head *b)
-{
- bit_spin_lock(0, (unsigned long *)&b->first);
-}
-
-static inline void spin_unlock_bucket(struct hlist_bl_head *b)
-{
- __bit_spin_unlock(0, (unsigned long *)&b->first);
-}
-
/* Statistics gathering. */
struct dentry_stat_t dentry_stat = {
.age_limit = 45,
@@ -334,10 +324,10 @@ void __d_drop(struct dentry *dentry)
else
b = d_hash(dentry->d_parent, dentry->d_name.hash);
- spin_lock_bucket(b);
+ hlist_bl_lock(b);
__hlist_bl_del(&dentry->d_hash);
dentry->d_hash.pprev = NULL;
- spin_unlock_bucket(b);
+ hlist_bl_unlock(b);
dentry_rcuwalk_barrier(dentry);
}
@@ -1594,9 +1584,9 @@ struct dentry *d_obtain_alias(struct inode *inode)
tmp->d_inode = inode;
tmp->d_flags |= DCACHE_DISCONNECTED;
list_add(&tmp->d_alias, &inode->i_dentry);
- spin_lock_bucket(&tmp->d_sb->s_anon);
+ hlist_bl_lock(&tmp->d_sb->s_anon);
hlist_bl_add_head(&tmp->d_hash, &tmp->d_sb->s_anon);
- spin_unlock_bucket(&tmp->d_sb->s_anon);
+ hlist_bl_unlock(&tmp->d_sb->s_anon);
spin_unlock(&tmp->d_lock);
spin_unlock(&inode->i_lock);
security_d_instantiate(tmp, inode);
@@ -2076,10 +2066,10 @@ EXPORT_SYMBOL(d_delete);
static void __d_rehash(struct dentry * entry, struct hlist_bl_head *b)
{
BUG_ON(!d_unhashed(entry));
- spin_lock_bucket(b);
+ hlist_bl_lock(b);
entry->d_flags |= DCACHE_RCUACCESS;
hlist_bl_add_head_rcu(&entry->d_hash, b);
- spin_unlock_bucket(b);
+ hlist_bl_unlock(b);
}
static void _d_rehash(struct dentry * entry)
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index f07643e21bfa..7a4fb630a320 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -93,14 +93,12 @@ static unsigned int gl_hash(const struct gfs2_sbd *sdp,
static inline void spin_lock_bucket(unsigned int hash)
{
- struct hlist_bl_head *bl = &gl_hash_table[hash];
- bit_spin_lock(0, (unsigned long *)bl);
+ hlist_bl_lock(&gl_hash_table[hash]);
}
static inline void spin_unlock_bucket(unsigned int hash)
{
- struct hlist_bl_head *bl = &gl_hash_table[hash];
- __bit_spin_unlock(0, (unsigned long *)bl);
+ hlist_bl_unlock(&gl_hash_table[hash]);
}
static void gfs2_glock_dealloc(struct rcu_head *rcu)
diff --git a/include/linux/list_bl.h b/include/linux/list_bl.h
index 5bad17d1acde..31f9d75adc5b 100644
--- a/include/linux/list_bl.h
+++ b/include/linux/list_bl.h
@@ -2,6 +2,7 @@
#define _LINUX_LIST_BL_H
#include <linux/list.h>
+#include <linux/bit_spinlock.h>
/*
* Special version of lists, where head of the list has a lock in the lowest
@@ -114,6 +115,16 @@ static inline void hlist_bl_del_init(struct hlist_bl_node *n)
}
}
+static inline void hlist_bl_lock(struct hlist_bl_head *b)
+{
+ bit_spin_lock(0, (unsigned long *)b);
+}
+
+static inline void hlist_bl_unlock(struct hlist_bl_head *b)
+{
+ __bit_spin_unlock(0, (unsigned long *)b);
+}
+
/**
* hlist_bl_for_each_entry - iterate over list of given type
* @tpos: the type * to use as a loop cursor.