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-rw-r--r--fs/f2fs/file.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 40fe72e..d400380a 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2092,6 +2092,13 @@ static int f2fs_move_file_range(struct file *file_in, loff_t pos_in,
if (f2fs_encrypted_inode(src) || f2fs_encrypted_inode(dst))
return -EOPNOTSUPP;
+ if (src == dst) {
+ if (pos_in == pos_out)
+ return 0;
+ if (pos_out > pos_in && pos_out < pos_in + len)
+ return -EINVAL;
+ }
+
inode_lock(src);
if (src != dst) {
if (!inode_trylock(dst)) {
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