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authorIlya Dryomov <idryomov@gmail.com>2018-01-16 15:41:54 +0100
committerIlya Dryomov <idryomov@gmail.com>2018-01-29 18:36:03 +0100
commite573427a440fd67d3f522357d7ac901d59281948 (patch)
tree349867a8fb7ac4ad785eabf06c7c0cd9b28ebdc3 /drivers/block
parentd98f153f1a116f79e636edd34b4fec07e49ae9b2 (diff)
downloadlinux-e573427a440fd67d3f522357d7ac901d59281948.tar.bz2
rbd: whitelist RBD_FEATURE_OPERATIONS feature bit
This feature bit restricts older clients from performing certain maintenance operations against an image (e.g. clone, snap create). krbd does not perform maintenance operations. Cc: stable@vger.kernel.org Signed-off-by: Ilya Dryomov <idryomov@gmail.com> Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/rbd.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 4a886d8c4a3c..8e40da093766 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -124,11 +124,13 @@ static int atomic_dec_return_safe(atomic_t *v)
#define RBD_FEATURE_STRIPINGV2 (1ULL<<1)
#define RBD_FEATURE_EXCLUSIVE_LOCK (1ULL<<2)
#define RBD_FEATURE_DATA_POOL (1ULL<<7)
+#define RBD_FEATURE_OPERATIONS (1ULL<<8)
#define RBD_FEATURES_ALL (RBD_FEATURE_LAYERING | \
RBD_FEATURE_STRIPINGV2 | \
RBD_FEATURE_EXCLUSIVE_LOCK | \
- RBD_FEATURE_DATA_POOL)
+ RBD_FEATURE_DATA_POOL | \
+ RBD_FEATURE_OPERATIONS)
/* Features supported by this (client software) implementation. */