From: Andy Adamson <andros@xxxxxxxxxxxxxxxxxxxxxxxxxx>
NFSv4.2 inter server to server copy always copies across devices.
Note: both btrfs and nfs have EXDEV checks in their
copy_file_range functions.
Signed-off-by: Andy Adamson <andros@xxxxxxxxxx>
---
fs/read_write.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/fs/read_write.c b/fs/read_write.c
index 1cbab4e..a6d3350 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1483,7 +1483,6 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in,
size_t len, unsigned int flags)
{
struct inode *inode_in = file_inode(file_in);
- struct inode *inode_out = file_inode(file_out);
ssize_t ret;
if (flags != 0)
@@ -1505,10 +1504,6 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in,
(file_out->f_flags & O_APPEND))
return -EBADF;
- /* this could be relaxed once a method supports cross-fs copies */
- if (inode_in->i_sb != inode_out->i_sb)
- return -EXDEV;
-
if (len == 0)
return 0;
--
1.8.3.1
--
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