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block: add WARN_ON if bdi register fail
authorweiping zhang <zhangweiping@didichuxing.com>
Tue, 31 Oct 2017 10:38:59 +0000 (18:38 +0800)
committerJens Axboe <axboe@kernel.dk>
Sun, 19 Nov 2017 18:02:13 +0000 (11:02 -0700)
commit3a92168bc8a113098b44a95d499557a88bb387da
tree6115d091d809f3844ae1894e83c597e8d26d5ac8tree
parenta0747a859ef6d3cc5b6cd50eb694499b78dd0025commit | diff
block: add WARN_ON if bdi register fail

device_add_disk need do more safety error handle, so this patch just
add WARN_ON.

Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: weiping zhang <zhangweiping@didichuxing.com>
Adapted for current series by me.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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