fs: assign sb->s_bdi to default_backing_dev_info if the bdi is going away
authorJens Axboe <jaxboe@fusionio.com>
Thu, 17 Mar 2011 10:13:12 +0000 (11:13 +0100)
committerJens Axboe <jaxboe@fusionio.com>
Thu, 17 Mar 2011 10:13:12 +0000 (11:13 +0100)
commit95f28604a65b1c40b6c6cd95e58439cd7ded3add
tree25b3be2d5505f06b2262bade8d1ecf5323c47ff8
parenta91a2785b200864aef2270ed6a3babac7a253a20
fs: assign sb->s_bdi to default_backing_dev_info if the bdi is going away

We don't have proper reference counting for this yet, so we run into
cases where the device is pulled and we OOPS on flushing the fs data.
This happens even though the dirty inodes have already been
migrated to the default_backing_dev_info.

Reported-by: Torsten Hilbrich <torsten.hilbrich@secunet.com>
Tested-by: Torsten Hilbrich <torsten.hilbrich@secunet.com>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
fs/super.c
fs/sync.c
mm/backing-dev.c