1 /*-
2 * Copyright (c) 2024-2025 The FreeBSD Foundation
3 * Copyright (c) 2024-2025 Jean-Sébastien Pédron
4 *
5 * This software was developed by Jean-Sébastien Pédron under sponsorship
6 * from the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <linux/gfp.h>
31 #include <linux/mm.h>
32 #include <linux/mm_types.h>
33 #include <linux/page.h>
34 #include <linux/pagevec.h>
35
36 struct folio *
folio_alloc(gfp_t gfp,unsigned int order)37 folio_alloc(gfp_t gfp, unsigned int order)
38 {
39 struct page *page;
40 struct folio *folio;
41
42 /*
43 * Allocated pages are wired already. There is no need to increase a
44 * refcount here.
45 */
46 page = alloc_pages(gfp | __GFP_COMP, order);
47 folio = (struct folio *)page;
48
49 return (folio);
50 }
51
52 void
__folio_batch_release(struct folio_batch * fbatch)53 __folio_batch_release(struct folio_batch *fbatch)
54 {
55 release_pages(fbatch->folios, folio_batch_count(fbatch));
56
57 folio_batch_reinit(fbatch);
58 }
59