keep_bio_blkcg feature is off by default, and it can
be turned on by using "keep_bio_blkcg" argument.
Signed-off-by: Hou Tao <houtao1@xxxxxxxxxx>
---
drivers/md/dm-thin.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/md/dm-thin.c b/drivers/md/dm-thin.c
index 8178ee8..57d6202 100644
--- a/drivers/md/dm-thin.c
+++ b/drivers/md/dm-thin.c
@@ -2824,6 +2824,7 @@ static void pool_features_init(struct pool_features *pf)
pf->discard_enabled = true;
pf->discard_passdown = true;
pf->error_if_no_space = false;
+ pf->keep_bio_blkcg = false;
}
static void __pool_destroy(struct pool *pool)
@@ -3053,7 +3054,7 @@ static int parse_pool_features(struct dm_arg_set *as, struct pool_features *pf,
const char *arg_name;
static struct dm_arg _args[] = {
- {0, 4, "Invalid number of pool feature arguments"},
+ {0, 5, "Invalid number of pool feature arguments"},
};
/*
@@ -3085,6 +3086,9 @@ static int parse_pool_features(struct dm_arg_set *as, struct pool_features *pf,
else if (!strcasecmp(arg_name, "error_if_no_space"))
pf->error_if_no_space = true;
+ else if (!strcasecmp(arg_name, "keep_bio_blkcg"))
+ pf->keep_bio_blkcg = true;
+
else {
ti->error = "Unrecognised pool feature requested";
r = -EINVAL;
--
2.5.0
--
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