diff options
| -rw-r--r-- | fs/dcache.c | 16 | ||||
| -rw-r--r-- | fs/inode.c | 17 |
2 files changed, 12 insertions, 21 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index 9d1a59dfda0b..f62ba90bce91 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, diff --git a/fs/inode.c b/fs/inode.c index ae2727ab0c3a..efc43979709f 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -103,7 +103,6 @@ static DECLARE_RWSEM(iprune_sem); struct inodes_stat_t inodes_stat; static struct percpu_counter nr_inodes __cacheline_aligned_in_smp; -static struct percpu_counter nr_inodes_unused __cacheline_aligned_in_smp; static struct kmem_cache *inode_cachep __read_mostly; @@ -114,7 +113,7 @@ static inline int get_nr_inodes(void) static inline int get_nr_inodes_unused(void) { - return percpu_counter_sum_positive(&nr_inodes_unused); + return inodes_stat.nr_unused; } int get_nr_dirty_inodes(void) @@ -132,7 +131,6 @@ int proc_nr_inodes(ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { inodes_stat.nr_inodes = get_nr_inodes(); - inodes_stat.nr_unused = get_nr_inodes_unused(); return proc_dointvec(table, write, buffer, lenp, ppos); } #endif @@ -335,7 +333,7 @@ static void inode_lru_list_add(struct inode *inode) { if (list_empty(&inode->i_lru)) { list_add(&inode->i_lru, &inode_lru); - percpu_counter_inc(&nr_inodes_unused); + inodes_stat.nr_unused++; } } @@ -343,7 +341,7 @@ static void inode_lru_list_del(struct inode *inode) { if (!list_empty(&inode->i_lru)) { list_del_init(&inode->i_lru); - percpu_counter_dec(&nr_inodes_unused); + inodes_stat.nr_unused--; } } @@ -513,7 +511,7 @@ void evict_inodes(struct super_block *sb) list_move(&inode->i_lru, &dispose); list_del_init(&inode->i_wb_list); if (!(inode->i_state & (I_DIRTY | I_SYNC))) - percpu_counter_dec(&nr_inodes_unused); + inodes_stat.nr_unused--; } spin_unlock(&inode_lock); @@ -554,7 +552,7 @@ int invalidate_inodes(struct super_block *sb) list_move(&inode->i_lru, &dispose); list_del_init(&inode->i_wb_list); if (!(inode->i_state & (I_DIRTY | I_SYNC))) - percpu_counter_dec(&nr_inodes_unused); + inodes_stat.nr_unused--; } spin_unlock(&inode_lock); @@ -616,7 +614,7 @@ static void prune_icache(int nr_to_scan) if (atomic_read(&inode->i_count) || (inode->i_state & ~I_REFERENCED)) { list_del_init(&inode->i_lru); - percpu_counter_dec(&nr_inodes_unused); + inodes_stat.nr_unused--; continue; } @@ -650,7 +648,7 @@ static void prune_icache(int nr_to_scan) */ list_move(&inode->i_lru, &freeable); list_del_init(&inode->i_wb_list); - percpu_counter_dec(&nr_inodes_unused); + inodes_stat.nr_unused--; } if (current_is_kswapd()) __count_vm_events(KSWAPD_INODESTEAL, reap); @@ -1649,7 +1647,6 @@ void __init inode_init(void) init_once); register_shrinker(&icache_shrinker); percpu_counter_init(&nr_inodes, 0); - percpu_counter_init(&nr_inodes_unused, 0); /* Hash may have been set up in inode_init_early */ if (!hashdist) |