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block/io: bdrv_pad_request(): support qemu_iovec_init_extended failure
authorVladimir Sementsov-Ogievskiy <[email protected]>
Fri, 11 Dec 2020 18:39:23 +0000 (21:39 +0300)
committerEric Blake <[email protected]>
Wed, 3 Feb 2021 14:14:00 +0000 (08:14 -0600)
commit98ca45494fcd6bf0336ecd559e440b6de6ea4cd3
tree2a96f3b35e08958d0289fd171d78a01e1f78c6eatree | snapshot
parentf0deecff827c838a71f83539b0572094aefe3d5ecommit | diff
block/io: bdrv_pad_request(): support qemu_iovec_init_extended failure

Make bdrv_pad_request() honest: return error if
qemu_iovec_init_extended() failed.

Update also bdrv_padding_destroy() to clean the structure for safety.

Signed-off-by: Vladimir Sementsov-Ogievskiy <[email protected]>
Message-Id: <20201211183934[email protected]>
Reviewed-by: Eric Blake <[email protected]>
Signed-off-by: Eric Blake <[email protected]>
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