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-rw-r--r--fs/dcache.c16
1 files changed, 5 insertions, 11 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index 9d1a59df..f62ba90 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -68,14 +68,12 @@ struct dentry_stat_t dentry_stat = {
};
static struct percpu_counter nr_dentry __cacheline_aligned_in_smp;
-static struct percpu_counter nr_dentry_unused __cacheline_aligned_in_smp;
#if defined(CONFIG_SYSCTL) && defined(CONFIG_PROC_FS)
int proc_nr_dentry(ctl_table *table, int write, void __user *buffer,
size_t *lenp, loff_t *ppos)
{
dentry_stat.nr_dentry = percpu_counter_sum_positive(&nr_dentry);
- dentry_stat.nr_unused = percpu_counter_sum_positive(&nr_dentry_unused);
return proc_dointvec(table, write, buffer, lenp, ppos);
}
#endif
@@ -140,7 +138,7 @@ static void dentry_lru_add(struct dentry *dentry)
if (list_empty(&dentry->d_lru)) {
list_add(&dentry->d_lru, &dentry->d_sb->s_dentry_lru);
dentry->d_sb->s_nr_dentry_unused++;
- percpu_counter_inc(&nr_dentry_unused);
+ dentry_stat.nr_unused++;
}
}
@@ -149,7 +147,7 @@ static void dentry_lru_del(struct dentry *dentry)
if (!list_empty(&dentry->d_lru)) {
list_del_init(&dentry->d_lru);
dentry->d_sb->s_nr_dentry_unused--;
- percpu_counter_dec(&nr_dentry_unused);
+ dentry_stat.nr_unused--;
}
}
@@ -158,7 +156,7 @@ static void dentry_lru_move_tail(struct dentry *dentry)
if (list_empty(&dentry->d_lru)) {
list_add_tail(&dentry->d_lru, &dentry->d_sb->s_dentry_lru);
dentry->d_sb->s_nr_dentry_unused++;
- percpu_counter_inc(&nr_dentry_unused);
+ dentry_stat.nr_unused++;
} else {
list_move_tail(&dentry->d_lru, &dentry->d_sb->s_dentry_lru);
}
@@ -546,7 +544,7 @@ static void prune_dcache(int count)
{
struct super_block *sb, *p = NULL;
int w_count;
- int unused = percpu_counter_sum_positive(&nr_dentry_unused);
+ int unused = dentry_stat.nr_unused;
int prune_ratio;
int pruned;
@@ -908,16 +906,13 @@ EXPORT_SYMBOL(shrink_dcache_parent);
*/
static int shrink_dcache_memory(struct shrinker *shrink, int nr, gfp_t gfp_mask)
{
- int nr_unused;
-
if (nr) {
if (!(gfp_mask & __GFP_FS))
return -1;
prune_dcache(nr);
}
- nr_unused = percpu_counter_sum_positive(&nr_dentry_unused);
- return (nr_unused / 100) * sysctl_vfs_cache_pressure;
+ return (dentry_stat.nr_unused / 100) * sysctl_vfs_cache_pressure;
}
static struct shrinker dcache_shrinker = {
@@ -2424,7 +2419,6 @@ static void __init dcache_init(void)
int loop;
percpu_counter_init(&nr_dentry, 0);
- percpu_counter_init(&nr_dentry_unused, 0);
/*
* A constructor could be added for stable state like the lists,
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