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Commit 1dfc0686 authored by Coly Li's avatar Coly Li Committed by Jens Axboe
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bcache: check unsupported feature sets for bcache register

This patch adds the check for features which is incompatible for
current supported feature sets.

Now if the bcache device created by bcache-tools has features that
current kernel doesn't support, read_super() will fail with error
messoage. E.g. if an unsupported incompatible feature detected,
bcache register will fail with dmesg "bcache: register_bcache() error :
Unsupported incompatible feature found".

Fixes: d721a43f ("bcache: increase super block version for cache device and backing device")
Fixes: ffa47032

 ("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket")
Signed-off-by: default avatarColy Li <colyli@suse.de>
Cc: stable@vger.kernel.org # 5.9+
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent f7b4943d
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