Add a new flag to report that bad blocks are present on a disk. It will
allow userspace to notify the user of the problem.
Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@xxxxxxxxx>
---
drivers/md/md.c | 2 ++
include/uapi/linux/raid/md_p.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 0abb147..1a807ec 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -6034,6 +6034,8 @@ static int get_disk_info(struct mddev *mddev, void __user * arg)
info.state |= (1<<MD_DISK_WRITEMOSTLY);
if (test_bit(FailFast, &rdev->flags))
info.state |= (1<<MD_DISK_FAILFAST);
+ if (rdev->badblocks.count)
+ info.state |= (1<<MD_DISK_BB_PRESENT);
} else {
info.major = info.minor = 0;
info.raid_disk = -1;
diff --git a/include/uapi/linux/raid/md_p.h b/include/uapi/linux/raid/md_p.h
index 9930f3e..b151e93 100644
--- a/include/uapi/linux/raid/md_p.h
+++ b/include/uapi/linux/raid/md_p.h
@@ -93,6 +93,7 @@
* read requests will only be sent here in
* dire need
*/
+#define MD_DISK_BB_PRESENT 11 /* disk has bad blocks */
#define MD_DISK_JOURNAL 18 /* disk is used as the write journal in RAID-5/6 */
#define MD_DISK_ROLE_SPARE 0xffff
--
1.8.3.1
--
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