This interface may help anyone who want to know all badblocks without
query block for each.
Signed-off-by: yangerkun <yanger...@huawei.com>
---
drivers/md/dm-dust.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/md/dm-dust.c b/drivers/md/dm-dust.c
index a0c75c104de0..2ad8fc9293e0 100644
--- a/drivers/md/dm-dust.c
+++ b/drivers/md/dm-dust.c
@@ -284,6 +284,31 @@ static int dust_clear_badblocks(struct dust_device *dd,
char *result, unsigned i
return 1;
}
+static int dust_list_badblocks(struct dust_device *dd, char *result, unsigned
int maxlen,
+ unsigned int *sz_ptr)
+{
+ unsigned long flags;
+ struct rb_root badblocklist;
+ struct rb_node *node;
+ struct badblock *bblk;
+ unsigned int sz = *sz_ptr;
+ unsigned long long num = 0;
+
+ spin_lock_irqsave(&dd->dust_lock, flags);
+ badblocklist = dd->badblocklist;
+ for (node = rb_first(&badblocklist); node; node = rb_next(node)) {
+ bblk = rb_entry(node, struct badblock, node);
+ DMEMIT("%llu\n", bblk->bb);
+ num++;
+ }
+
+ spin_unlock_irqrestore(&dd->dust_lock, flags);
+ if (!num)
+ DMEMIT("null");
+
+ return 1;
+}
+
/*
* Target parameters:
*
@@ -427,6 +452,8 @@ static int dust_message(struct dm_target *ti, unsigned int
argc, char **argv,
else
dd->quiet_mode = false;
r = 0;
+ } else if (!strcasecmp(argv[0], "listbadblocks")) {
+ r = dust_list_badblocks(dd, result, maxlen, &sz);
} else {
invalid_msg = true;
}
--
2.25.4
--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel
