This is a note to let you know that I've just added the patch titled
rbd: whitelist RBD_FEATURE_OPERATIONS feature bit
to the 4.15-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: rbd-whitelist-rbd_feature_operations-feature-bit.patch and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From e573427a440fd67d3f522357d7ac901d59281948 Mon Sep 17 00:00:00 2001
From: Ilya Dryomov idryomov@gmail.com Date: Tue, 16 Jan 2018 15:41:54 +0100 Subject: rbd: whitelist RBD_FEATURE_OPERATIONS feature bit
From: Ilya Dryomov idryomov@gmail.com
commit e573427a440fd67d3f522357d7ac901d59281948 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/block/rbd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -124,11 +124,13 @@ static int atomic_dec_return_safe(atomic #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. */
Patches currently in stable-queue which might be from idryomov@gmail.com are
queue-4.15/rbd-whitelist-rbd_feature_operations-feature-bit.patch