cifs: Move cifs_loose_read_iter() and cifs_file_write_iter() to file.c

Move cifs_loose_read_iter() and cifs_file_write_iter() to file.c so that
they are colocated with similar functions rather than being split with
cifsfs.c.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Steve French <sfrench@samba.org>
cc: Shyam Prasad N <nspmangalore@gmail.com>
cc: Rohith Surabattula <rohiths.msft@gmail.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: linux-cifs@vger.kernel.org
cc: netfs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org

1 files changed, 53 insertions, 0 deletions

diff --git a/fs/smb/client/file.c b/fs/smb/client/file.c
index 7f2ce68d2a2a..331446fc3d22 100644
--- a/fs/smb/client/file.c
+++ b/fs/smb/client/file.c
@@ -4250,6 +4250,59 @@ ssize_t cifs_user_readv(struct kiocb *iocb, struct iov_iter *to)
 	return __cifs_readv(iocb, to, false);
 }
 
+ssize_t cifs_loose_read_iter(struct kiocb *iocb, struct iov_iter *iter)
+{
+	ssize_t rc;
+	struct inode *inode = file_inode(iocb->ki_filp);
+
+	if (iocb->ki_flags & IOCB_DIRECT)
+		return cifs_user_readv(iocb, iter);
+
+	rc = cifs_revalidate_mapping(inode);
+	if (rc)
+		return rc;
+
+	return generic_file_read_iter(iocb, iter);
+}
+
+ssize_t cifs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
+{
+	struct inode *inode = file_inode(iocb->ki_filp);
+	struct cifsInodeInfo *cinode = CIFS_I(inode);
+	ssize_t written;
+	int rc;
+
+	if (iocb->ki_filp->f_flags & O_DIRECT) {
+		written = cifs_user_writev(iocb, from);
+		if (written > 0 && CIFS_CACHE_READ(cinode)) {
+			cifs_zap_mapping(inode);
+			cifs_dbg(FYI,
+				 "Set no oplock for inode=%p after a write operation\n",
+				 inode);
+			cinode->oplock = 0;
+		}
+		return written;
+	}
+
+	written = cifs_get_writer(cinode);
+	if (written)
+		return written;
+
+	written = generic_file_write_iter(iocb, from);
+
+	if (CIFS_CACHE_WRITE(CIFS_I(inode)))
+		goto out;
+
+	rc = filemap_fdatawrite(inode->i_mapping);
+	if (rc)
+		cifs_dbg(FYI, "cifs_file_write_iter: %d rc on %p inode\n",
+			 rc, inode);
+
+out:
+	cifs_put_writer(cinode);
+	return written;
+}
+
 ssize_t
 cifs_strict_readv(struct kiocb *iocb, struct iov_iter *to)
 {