[ Upstream commit 5a74ac4c4a ]
Commit 5c089fd0c7 ("idr: Fix idr_get_next race with idr_remove")
neglected to fix idr_get_next_ul(). As far as I can tell, nobody's
actually using this interface under the RCU read lock, but fix it now
before anybody decides to use it.
Fixes: 5c089fd0c7 ("idr: Fix idr_get_next race with idr_remove")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>