diff mbox series

[v9,11/11] NFS: replace cross device check in copy_file_range

Message ID 20190614200016.12348-12-olga.kornievskaia@gmail.com (mailing list archive)
State New, archived
Headers show
Series client-side support for "inter" SSC copy | expand

Commit Message

Olga Kornievskaia June 14, 2019, 8 p.m. UTC 
From: Olga Kornievskaia <kolga@netapp.com>

Add a check to disallow cross file systems copy offload, both
files are expected to be of NFS4.2+ type.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
---
 fs/nfs/nfs4file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c
index 3bfa041..0389fab 100644
--- a/fs/nfs/nfs4file.c
+++ b/fs/nfs/nfs4file.c
@@ -140,7 +140,7 @@  static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
 	ssize_t ret;
 
 	/* Only offload copy if superblock is the same */
-	if (file_inode(file_in)->i_sb != file_inode(file_out)->i_sb)
+	if (file_in->f_op != &nfs4_file_operations)
 		return -EXDEV;
 	if (!nfs_server_capable(file_inode(file_out), NFS_CAP_COPY))
 		return -EOPNOTSUPP;