diff options
Diffstat (limited to 'fs/dcache.c')
| -rw-r--r-- | fs/dcache.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index 9d1a59dfda0..f62ba90bce9 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, |