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| author |   Ilya Dryomov <idryomov@gmail.com> | 2018-01-16 15:41:54 +0100 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2018-01-29 18:36:03 +0100 |
| commit | e573427a440fd67d3f522357d7ac901d59281948 (patch) | |
| tree | 349867a8fb7ac4ad785eabf06c7c0cd9b28ebdc3 /drivers/block | |
| parent | rbd: don't NULL out ->obj_request in rbd_img_obj_parent_read_full() (diff) | |
| download | linux-dev-e573427a440fd67d3f522357d7ac901d59281948.tar.xz linux-dev-e573427a440fd67d3f522357d7ac901d59281948.zip | |
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.c | 4 |
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. */ |