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authorTejun Heo <tj@kernel.org>2009-04-17 08:34:48 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-04-22 08:35:10 +0200
commit71982a409f12c50d011325a4471aa20666bb908d (patch)
treed457415cc6c50b386a6876acf0abc4472f0e5630 /include
parenta9e9dc24bbc3e084450a22cf4fb82f5f5d4cbeea (diff)
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block: include empty disks in /proc/diskstats
/proc/diskstats used to show stats for all disks whether they're zero-sized or not and their non-zero partitions. Commit 074a7aca7afa6f230104e8e65eba3420263714a5 accidentally changed the behavior such that it doesn't print out zero sized disks. This patch implements DISK_PITER_INCL_EMPTY_PART0 flag to partition iterator and uses it in diskstats_show() such that empty part0 is shown in /proc/diskstats. Reported and bisectd by Dianel Collins. Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Daniel Collins <solemnwarning@solemnwarning.no-ip.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/genhd.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 634c53028fb..a1a28caed23 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -214,6 +214,7 @@ static inline void disk_put_part(struct hd_struct *part)
#define DISK_PITER_REVERSE (1 << 0) /* iterate in the reverse direction */
#define DISK_PITER_INCL_EMPTY (1 << 1) /* include 0-sized parts */
#define DISK_PITER_INCL_PART0 (1 << 2) /* include partition 0 */
+#define DISK_PITER_INCL_EMPTY_PART0 (1 << 3) /* include empty partition 0 */
struct disk_part_iter {
struct gendisk *disk;