Hi Steve, Could we get an ACK on this patch. It is a prerequisite for merging the cross-device copy_file_range work. It depends on a new helper introduced here: https://lore.kernel.org/linux-fsdevel/CAOQ4uxjbcSWX1hUcuXbn8hFH3QYB+5bAC9Z1yCwJdR=T-GGtCg@xxxxxxxxxxxxxx/T/#m1569878c41f39fac3aadb3832a30659c323b582a Thanks, Amir, On Wed, May 29, 2019 at 8:43 PM Amir Goldstein <amir73il@xxxxxxxxx> wrote: > > cifs has both source and destination inodes locked throughout the copy. > Like ->write_iter(), we update mtime and strip setuid bits of destination > file before copy and like ->read_iter(), we update atime of source file > after copy. > > Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx> > --- > fs/cifs/cifsfs.c | 11 ++++++++--- > 1 file changed, 8 insertions(+), 3 deletions(-) > > diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c > index c65823270313..ab6c5c24146d 100644 > --- a/fs/cifs/cifsfs.c > +++ b/fs/cifs/cifsfs.c > @@ -1096,6 +1096,10 @@ ssize_t cifs_file_copychunk_range(unsigned int xid, > goto out; > } > > + rc = -EOPNOTSUPP; > + if (!target_tcon->ses->server->ops->copychunk_range) > + goto out; > + > /* > * Note: cifs case is easier than btrfs since server responsible for > * checks for proper open modes and file type and if it wants > @@ -1107,11 +1111,12 @@ ssize_t cifs_file_copychunk_range(unsigned int xid, > /* should we flush first and last page first */ > truncate_inode_pages(&target_inode->i_data, 0); > > - if (target_tcon->ses->server->ops->copychunk_range) > + rc = file_modified(dst_file); > + if (!rc) > rc = target_tcon->ses->server->ops->copychunk_range(xid, > smb_file_src, smb_file_target, off, len, destoff); > - else > - rc = -EOPNOTSUPP; > + > + file_accessed(src_file); > > /* force revalidate of size and timestamps of target file now > * that target is updated on the server > -- > 2.17.1 >
