From: Olga Kornievskaia <kolga@xxxxxxxxxx> 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@xxxxxxxxxx> Reviewed-by: Matthew Wilcox <willy@xxxxxxxxxxxxx> Signed-off-by: Olga Kornievskaia <kolga@xxxxxxxxxx> --- fs/nfs/nfs4file.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index 8978325..e97813b 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -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; -- 1.8.3.1
