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-rw-r--r--block/genhd.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/block/genhd.c b/block/genhd.c
index d9743ff67898..e0ce23ac2ece 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -307,7 +307,7 @@ static void *part_start(struct seq_file *part, loff_t *pos)
loff_t k = *pos;
if (!k)
- seq_puts(part, "major minor #blocks name\n\n");
+ part->private = (void *)1LU; /* tell show to print header */
mutex_lock(&block_class_lock);
dev = class_find_device(&block_class, NULL, &k, find_start);
@@ -349,6 +349,17 @@ static int show_partition(struct seq_file *part, void *v)
int n;
char buf[BDEVNAME_SIZE];
+ /*
+ * Print header if start told us to do. This is to preserve
+ * the original behavior of not printing header if no
+ * partition exists. This hackery will be removed later with
+ * class iteration clean up.
+ */
+ if (part->private) {
+ seq_puts(part, "major minor #blocks name\n\n");
+ part->private = NULL;
+ }
+
/* Don't show non-partitionable removeable devices or empty devices */
if (!get_capacity(sgp) ||
(sgp->minors == 1 && (sgp->flags & GENHD_FL_REMOVABLE)))