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[04/12] btrfs: reada, remove pointless BUG_ON in reada_find_extent

Message ID 8fb25ce369cf37795481b492215d047d20a0d6ae.1478710770.git.dsterba@suse.com (mailing list archive)
State Accepted
Headers show

Commit Message

David Sterba Nov. 9, 2016, 5:04 p.m. UTC 
The lock is held, we make the same lookup that previously failed with
EEXIST and we don't insert NULL pointers.

Signed-off-by: David Sterba <dsterba@suse.com>
---
 fs/btrfs/reada.c | 1 -
 1 file changed, 1 deletion(-)
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Patch

diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c
index fe068b197fc1..95d526af3fba 100644
--- a/fs/btrfs/reada.c
+++ b/fs/btrfs/reada.c
@@ -393,7 +393,6 @@  static struct reada_extent *reada_find_extent(struct btrfs_root *root,
 	ret = radix_tree_insert(&fs_info->reada_tree, index, re);
 	if (ret == -EEXIST) {
 		re_exist = radix_tree_lookup(&fs_info->reada_tree, index);
-		BUG_ON(!re_exist);
 		re_exist->refcnt++;
 		spin_unlock(&fs_info->reada_lock);
 		btrfs_dev_replace_unlock(&fs_info->dev_replace, 0);