Commit 8dff1df5 authored Jul 02, 2019 by Olga Kornievskaia Committed by Olga Kornievskaia Oct 09, 2019

NFS: replace cross device check in copy_file_range



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>

parent 12751010

fs/nfs/nfs4file.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -141,7 +141,7 @@ static ssize_t __nfs4_copy_file_range(struct file *file_in, loff_t pos_in,
		bool sync = false;

		/* 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;