... instead of just returning an error.
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
---
drivers/block/rbd.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 9f1eb00b5e64..78aca585e7e5 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -4184,7 +4184,7 @@ static int _rbd_dev_v2_snap_features(struct rbd_device *rbd_dev, u64 snap_id,
__le64 features;
__le64 incompat;
} __attribute__ ((packed)) features_buf = { 0 };
- u64 incompat;
+ u64 unsup;
int ret;
ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_name,
@@ -4197,9 +4197,12 @@ static int _rbd_dev_v2_snap_features(struct rbd_device *rbd_dev, u64 snap_id,
if (ret < sizeof (features_buf))
return -ERANGE;
- incompat = le64_to_cpu(features_buf.incompat);
- if (incompat & ~RBD_FEATURES_SUPPORTED)
+ unsup = le64_to_cpu(features_buf.incompat) & ~RBD_FEATURES_SUPPORTED;
+ if (unsup) {
+ rbd_warn(rbd_dev, "image uses unsupported features: 0x%llx",
+ unsup);
return -ENXIO;
+ }
*snap_features = le64_to_cpu(features_buf.features);
--
2.4.3
--
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