maple_tree: Change RCU checks to WARN_ON() instead of BUG_ON()

If RCU is enabled and the tree isn't locked, just warn the user and
avoid crashing the kernel.

Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>

diff --git a/include/linux/maple_tree.h b/include/linux/maple_tree.h
index 204d7941a39ec2dbd6052d0c604bcd81baf5d653..ed92abf4c1fb57214ec4c8173677ffaaa5d73c18 100644 (file)
--- a/include/linux/maple_tree.h
+++ b/include/linux/maple_tree.h
@@ -616,7 +616,7 @@ static inline void mt_clear_in_rcu(struct maple_tree *mt)
                return;
 
        if (mt_external_lock(mt)) {
-               BUG_ON(!mt_lock_is_held(mt));
+               WARN_ON(!mt_lock_is_held(mt));
                mt->ma_flags &= ~MT_FLAGS_USE_RCU;
        } else {
                mtree_lock(mt);
@@ -635,7 +635,7 @@ static inline void mt_set_in_rcu(struct maple_tree *mt)
                return;
 
        if (mt_external_lock(mt)) {
-               BUG_ON(!mt_lock_is_held(mt));
+               WARN_ON(!mt_lock_is_held(mt));
                mt->ma_flags |= MT_FLAGS_USE_RCU;
        } else {
                mtree_lock(mt);