On 18.02.22 г. 16:38 ч., Josef Bacik wrote:
The sb check is already done in do_clone_file_range, and the mnt check
(which will hopefully go away in a subsequent patch) is done in
ioctl_file_clone(). Remove the check in our code and put an ASSERT() to
make sure it doesn't change underneath us.
Signed-off-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
Reviewed-by: Nikolay Borisov <nborisov@xxxxxxxx>
---
fs/btrfs/reflink.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/fs/btrfs/reflink.c b/fs/btrfs/reflink.c
index a3930da4eb3f..6fed103f1000 100644
--- a/fs/btrfs/reflink.c
+++ b/fs/btrfs/reflink.c
@@ -772,9 +772,7 @@ static int btrfs_remap_file_range_prep(struct file *file_in, loff_t pos_in,
if (btrfs_root_readonly(root_out))
return -EROFS;
- if (file_in->f_path.mnt != file_out->f_path.mnt ||
- inode_in->i_sb != inode_out->i_sb)
- return -EXDEV;
+ ASSERT(inode_in->i_sb == inode_out->i_sb);
}
/* Don't make the dst file partly checksummed */
