tree 7426c067b91e07f24026b12a4f3c7c121c6ae458
parent 0c6e42ef568cece1c041fea5dcd0178d403b517b
author Coly Li <colyli@suse.de> 1609690066 +0800
committer Coly Li <colyli@suse.de> 1609690997 +0800

bcache-tools: only call to_cache_sb() for bcache device in may_add_item()

to_cache_sb() will print an error message "Unsupported super block
version" if the super block version is invalid. For non-bcache devices,
it is unnecessary to check version number and print bogus error messages.

This patch checks bcache_magic earlier in may_add_item(), and only calls
to_cache_sb() if the magic string matched. Then the non-bcache devices
can be skipped, and no more bogus error message observed.

Signed-off-by: Coly Li <colyli@suse.de>