I don't think it makes sense to report that a copy succeeded if the
files aren't open properly.
Signed-off-by: Anna Schumaker <anna.schuma...@netapp.com>
Reviewed-by: David Sterba <dste...@suse.com>
---
fs/read_write.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/read_write.c b/fs/read_write.c
index dd10750..f3d6c48 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1345,9 +1345,6 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t
pos_in,
if (flags)
return -EINVAL;
- if (len == 0)
- return 0;
-
/* copy_file_range allows full ssize_t len, ignoring MAX_RW_COUNT */
ret = rw_verify_area(READ, file_in, &pos_in, len);
if (ret >= 0)
@@ -1378,6 +1375,9 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t
pos_in,
if (inode_in == inode_out)
return -EINVAL;
+ if (len == 0)
+ return 0;
+
ret = mnt_want_write_file(file_out);
if (ret)
return ret;
--
2.5.3
--
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