Kent Overstreet c9502ea442
bcache: Fix a sysfs splat on shutdown ...
If we stopped a bcache device when we were already detaching (or
something like that), bcache_device_unlink() would try to remove a
symlink from sysfs that was already gone because the bcache dev kobject
had already been removed from sysfs.
So keep track of whether we've removed stuff from sysfs.
Signed-off-by: Kent Overstreet <kmo@daterainc.com >
Cc: linux-stable <stable@vger.kernel.org > # >= v3.10
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c9502ea442