Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

[sfrench/cifs-2.6.git] / block / genhd.c

diff --git a/block/genhd.c b/block/genhd.c
index a9ec910974c1934675b887d2fc8c2d0703579b01..1a4916e01732b68ebb9af5ff2fd831c78057d910 100644 (file)
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -98,7 +98,7 @@ void disk_part_iter_init(struct disk_part_iter *piter, struct gendisk *disk,
 
        if (flags & DISK_PITER_REVERSE)
                piter->idx = ptbl->len - 1;
-       else if (flags & DISK_PITER_INCL_PART0)
+       else if (flags & (DISK_PITER_INCL_PART0 | DISK_PITER_INCL_EMPTY_PART0))
                piter->idx = 0;
        else
                piter->idx = 1;
@@ -134,7 +134,8 @@ struct hd_struct *disk_part_iter_next(struct disk_part_iter *piter)
        /* determine iteration parameters */
        if (piter->flags & DISK_PITER_REVERSE) {
                inc = -1;
-               if (piter->flags & DISK_PITER_INCL_PART0)
+               if (piter->flags & (DISK_PITER_INCL_PART0 |
+                                   DISK_PITER_INCL_EMPTY_PART0))
                        end = -1;
                else
                        end = 0;
@@ -150,7 +151,10 @@ struct hd_struct *disk_part_iter_next(struct disk_part_iter *piter)
                part = rcu_dereference(ptbl->part[piter->idx]);
                if (!part)
                        continue;
-               if (!(piter->flags & DISK_PITER_INCL_EMPTY) && !part->nr_sects)
+               if (!part->nr_sects &&
+                   !(piter->flags & DISK_PITER_INCL_EMPTY) &&
+                   !(piter->flags & DISK_PITER_INCL_EMPTY_PART0 &&
+                     piter->idx == 0))
                        continue;
 
                get_device(part_to_dev(part));
@@ -1011,7 +1015,7 @@ static int diskstats_show(struct seq_file *seqf, void *v)
                                "\n\n");
        */
  
-       disk_part_iter_init(&piter, gp, DISK_PITER_INCL_PART0);
+       disk_part_iter_init(&piter, gp, DISK_PITER_INCL_EMPTY_PART0);
        while ((hd = disk_part_iter_next(&piter))) {
                cpu = part_stat_lock();
                part_round_stats(cpu, hd);