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Subject[PATCH] fs: ntfs: super: added return error value while map failed
Date
From: lijian <lijian@yulong.com>

When lookup_extent_mapping failed, should return '-ENOENT'.

Signed-off-by: lijian <lijian@yulong.com>
---
fs/btrfs/extent_map.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 4a8e02f7b6c7..e9d9f2bfc11d 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -305,8 +305,10 @@ int unpin_extent_cache(struct extent_map_tree *tree, u64 start, u64 len,

WARN_ON(!em || em->start != start);

- if (!em)
+ if (!em) {
+ ret = -ENOENT;
goto out;
+ }

em->generation = gen;
clear_bit(EXTENT_FLAG_PINNED, &em->flags);
--
2.17.1

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