writeback: check for registered bdi in flusher add and inode dirty
authorJens Axboe <jens.axboe@oracle.com>
Wed, 9 Sep 2009 07:10:25 +0000 (09:10 +0200)
committerJens Axboe <jens.axboe@oracle.com>
Fri, 11 Sep 2009 07:20:26 +0000 (09:20 +0200)
Also a debugging aid. We want to catch dirty inodes being added to
backing devices that don't do writeback.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

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