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Commit 07e21c4d authored by Nikolay Borisov's avatar Nikolay Borisov Committed by David Sterba
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btrfs: Document locking requirement via lockdep_assert_held 



Remove stale comment since there is no longer an eb->eb_lock and
document the locking expectation with a lockdep_assert_held statement.
No functional changes.

Signed-off-by: default avatarNikolay Borisov <nborisov@suse.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 55ac0139

fs/btrfs/extent_io.c

+2 −1
Original line number Diff line number Diff line
@@ -5066,9 +5066,10 @@ static inline void btrfs_release_extent_buffer_rcu(struct rcu_head *head) 
	__free_extent_buffer(eb);

}



/* Expects to have eb->eb_lock already held */

static int release_extent_buffer(struct extent_buffer *eb)

{

	lockdep_assert_held(&eb->refs_lock);



	WARN_ON(atomic_read(&eb->refs) == 0);

	if (atomic_dec_and_test(&eb->refs)) {

		if (test_and_clear_bit(EXTENT_BUFFER_IN_TREE, &eb->bflags)) {