drivers/hwspinlock: use correct radix tree API
radix_tree_is_indirect_ptr() is an internal API. The correct call to
use is radix_tree_deref_retry() which has the appropriate unlikely()
annotation.
Fixes: c6400ba7e1
("drivers/hwspinlock: fix race between radix tree insertion and lookup")
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jan Kara <jack@suse.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Родитель
6b053b8e5f
Коммит
b76ba4af4d
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@ -313,7 +313,7 @@ int of_hwspin_lock_get_id(struct device_node *np, int index)
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hwlock = radix_tree_deref_slot(slot);
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if (unlikely(!hwlock))
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continue;
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if (radix_tree_is_indirect_ptr(hwlock)) {
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if (radix_tree_deref_retry(hwlock)) {
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slot = radix_tree_iter_retry(&iter);
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continue;
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}
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