ext4: use percpu counter for extent cache count

[deliverable/linux.git] / fs / ext4 / super.c

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 373d46cd5d3f69d7cadcc87ea842ce3adafa3a35..1ae5860b30a31fd5bc2ccad61e611ccf9e2d5fa2 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -783,6 +783,7 @@ static void ext4_put_super(struct super_block *sb)
        percpu_counter_destroy(&sbi->s_freeinodes_counter);
        percpu_counter_destroy(&sbi->s_dirs_counter);
        percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
+       percpu_counter_destroy(&sbi->s_extent_cache_cnt);
        brelse(sbi->s_sbh);
 #ifdef CONFIG_QUOTA
        for (i = 0; i < MAXQUOTAS; i++)
@@ -3688,6 +3689,9 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
        if (!err) {
                err = percpu_counter_init(&sbi->s_dirtyclusters_counter, 0);
        }
+       if (!err) {
+               err = percpu_counter_init(&sbi->s_extent_cache_cnt, 0);
+       }
        if (err) {
                ext4_msg(sb, KERN_ERR, "insufficient memory");
                goto failed_mount3;
@@ -3993,6 +3997,7 @@ failed_mount3:
        percpu_counter_destroy(&sbi->s_freeinodes_counter);
        percpu_counter_destroy(&sbi->s_dirs_counter);
        percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
+       percpu_counter_destroy(&sbi->s_extent_cache_cnt);
        if (sbi->s_mmp_tsk)
                kthread_stop(sbi->s_mmp_tsk);
 failed_mount2: