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    rbd: avoid Wreturn-type warnings · c6244b3b
    Arnd Bergmann 提交于
    In some configurations gcc cannot see that rbd_assert(0) leads to an
    unreachable code path:
    
      drivers/block/rbd.c: In function 'rbd_img_is_write':
      drivers/block/rbd.c:1397:1: error: control reaches end of non-void function [-Werror=return-type]
      drivers/block/rbd.c: In function '__rbd_obj_handle_request':
      drivers/block/rbd.c:2499:1: error: control reaches end of non-void function [-Werror=return-type]
      drivers/block/rbd.c: In function 'rbd_obj_handle_write':
      drivers/block/rbd.c:2471:1: error: control reaches end of non-void function [-Werror=return-type]
    
    As the rbd_assert() here shows has no extra information beyond the verbose
    BUG(), we can simply use BUG() directly in its place.  This is reliably
    detected as not returning on any architecture, since it doesn't depend
    on the unlikely() comparison that confused gcc.
    
    Fixes: 3da691bf ("rbd: new request handling code")
    Signed-off-by: NArnd Bergmann <arnd@arndb.de>
    Reviewed-by: NIlya Dryomov <idryomov@gmail.com>
    Signed-off-by: NIlya Dryomov <idryomov@gmail.com>
    c6244b3b
rbd.c 150.1 KB