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-rw-r--r--fs/btrfs/extent_map.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index c976615dcda..754bc42c162 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -2047,7 +2047,7 @@ static int add_lru(struct extent_map_tree *tree, struct extent_buffer *eb)
rm = list_entry(tree->buffer_lru.prev,
struct extent_buffer, lru);
tree->lru_size--;
- list_del(&rm->lru);
+ list_del_init(&rm->lru);
free_extent_buffer(rm);
}
} else
@@ -2187,6 +2187,9 @@ lru_add:
return eb;
fail:
+ spin_lock(&tree->lru_lock);
+ list_del_init(&eb->lru);
+ spin_unlock(&tree->lru_lock);
if (!atomic_dec_and_test(&eb->refs))
return NULL;
for (index = 0; index < i; index++) {
@@ -2246,6 +2249,9 @@ lru_add:
spin_unlock(&tree->lru_lock);
return eb;
fail:
+ spin_lock(&tree->lru_lock);
+ list_del_init(&eb->lru);
+ spin_unlock(&tree->lru_lock);
if (!atomic_dec_and_test(&eb->refs))
return NULL;
for (index = 0; index < i; index++) {