Enhanced partition statistics: update partition statitics

Updates the enhanced partition statistics in generic block layer
besides the disk statistics.

Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 9a64045ff845..f2ec7f1b0ec5 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -18,6 +18,7 @@
 #include <linux/fs.h>
 #include <linux/kmod.h>
 #include <linux/ctype.h>
+#include <linux/genhd.h>
 
 #include "check.h"
 
@@ -273,6 +274,7 @@ static struct attribute_group *part_attr_groups[] = {
 static void part_release(struct device *dev)
 {
         struct hd_struct *p = dev_to_part(dev);
+        free_part_stats(p);
         kfree(p);
 }
 
@@ -314,6 +316,7 @@ void delete_partition(struct gendisk *disk, int part)
         p->nr_sects = 0;
         p->ios[0] = p->ios[1] = 0;
         p->sectors[0] = p->sectors[1] = 0;
+        part_stat_set_all(p, 0);
         kobject_put(p->holder_dir);
         device_del(&p->dev);
         put_device(&p->dev);
@@ -336,6 +339,10 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len,
         if (!p)
                 return;
 
+        if (!init_part_stats(p)) {
+                kfree(p);
+                return;
+        }
         p->start_sect = start;
         p->nr_sects = len;
         p->partno = part;