ceph: fix printk format warnings in file.c

Fix printk format warnings by using %zd for 'ssize_t' variables:

fs/ceph/file.c:751:2: warning: format '%ld' expects argument of type 'long int', but argument 11 has type 'ssize_t' [-Wformat]
fs/ceph/file.c:762:2: warning: format '%ld' expects argument of type 'long int', but argument 11 has type 'ssize_t' [-Wformat]
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc:	ceph-devel@vger.kernel.org
Signed-off-by: Sage Weil <sage@inktank.com>

fs/ceph/file.c

@@ -747,7 +747,7 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
 		goto out;
 	}
 
-	dout("aio_write %p %llx.%llx %llu~%ld getting caps. i_size %llu\n",
+	dout("aio_write %p %llx.%llx %llu~%zd getting caps. i_size %llu\n",
 	     inode, ceph_vinop(inode), pos, count, inode->i_size);
 	if (fi->fmode & CEPH_FILE_MODE_LAZY)
 		want = CEPH_CAP_FILE_BUFFER | CEPH_CAP_FILE_LAZYIO;
@@ -758,7 +758,7 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
 	if (err < 0)
 		goto out;
 
-	dout("aio_write %p %llx.%llx %llu~%ld got cap refs on %s\n",
+	dout("aio_write %p %llx.%llx %llu~%zd got cap refs on %s\n",
 	     inode, ceph_vinop(inode), pos, count, ceph_cap_string(got));
 
 	if ((got & (CEPH_CAP_FILE_BUFFER|CEPH_CAP_FILE_LAZYIO)) == 0 ||