The patch titled
Subject: slub: use a folio in __kmalloc_large_node
has been added to the -mm mm-unstable branch. Its filename is
slub-use-a-folio-in-__kmalloc_large_node.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/slub-use-a-folio-in-__kmalloc_large_node.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: slub: use a folio in __kmalloc_large_node
Date: Thu, 28 Dec 2023 08:57:46 +0000
Mirror the code in free_large_kmalloc() and alloc_pages_node() and use a
folio directly. Avoid the use of folio_alloc() as that will set up an
rmappable folio which we do not want here.
Link: https://lkml.kernel.org/r/20231228085748.1083901-5-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Hyeonggon Yoo <42.hyeyoo@xxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/slab_common.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
--- a/mm/slab_common.c~slub-use-a-folio-in-__kmalloc_large_node
+++ a/mm/slab_common.c
@@ -1137,7 +1137,7 @@ gfp_t kmalloc_fix_flags(gfp_t flags)
static void *__kmalloc_large_node(size_t size, gfp_t flags, int node)
{
- struct page *page;
+ struct folio *folio;
void *ptr = NULL;
unsigned int order = get_order(size);
@@ -1145,10 +1145,10 @@ static void *__kmalloc_large_node(size_t
flags = kmalloc_fix_flags(flags);
flags |= __GFP_COMP;
- page = alloc_pages_node(node, flags, order);
- if (page) {
- ptr = page_address(page);
- mod_lruvec_page_state(page, NR_SLAB_UNRECLAIMABLE_B,
+ folio = (struct folio *)alloc_pages_node(node, flags, order);
+ if (folio) {
+ ptr = folio_address(folio);
+ lruvec_stat_mod_folio(folio, NR_SLAB_UNRECLAIMABLE_B,
PAGE_SIZE << order);
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
buffer-return-bool-from-grow_dev_folio.patch
buffer-calculate-block-number-inside-folio_init_buffers.patch
buffer-fix-grow_buffers-for-block-size-page_size.patch
buffer-cast-block-to-loff_t-before-shifting-it.patch
buffer-fix-various-functions-for-block-size-page_size.patch
buffer-handle-large-folios-in-__block_write_begin_int.patch
buffer-fix-more-functions-for-block-size-page_size.patch
mm-convert-ksm_might_need_to_copy-to-work-on-folios.patch
mm-convert-ksm_might_need_to_copy-to-work-on-folios-fix.patch
mm-remove-pageanonexclusive-assertions-in-unuse_pte.patch
mm-convert-unuse_pte-to-use-a-folio-throughout.patch
mm-remove-some-calls-to-page_add_new_anon_rmap.patch
mm-remove-stale-example-from-comment.patch
mm-remove-references-to-page_add_new_anon_rmap-in-comments.patch
mm-convert-migrate_vma_insert_page-to-use-a-folio.patch
mm-convert-collapse_huge_page-to-use-a-folio.patch
mm-remove-page_add_new_anon_rmap-and-lru_cache_add_inactive_or_unevictable.patch
mm-return-the-folio-from-__read_swap_cache_async.patch
mm-pass-a-folio-to-__swap_writepage.patch
mm-pass-a-folio-to-swap_writepage_fs.patch
mm-pass-a-folio-to-swap_writepage_bdev_sync.patch
mm-pass-a-folio-to-swap_writepage_bdev_async.patch
mm-pass-a-folio-to-swap_readpage_fs.patch
mm-pass-a-folio-to-swap_readpage_bdev_sync.patch
mm-pass-a-folio-to-swap_readpage_bdev_async.patch
mm-convert-swap_page_sector-to-swap_folio_sector.patch
mm-convert-swap_readpage-to-swap_read_folio.patch
mm-remove-page_swap_info.patch
mm-return-a-folio-from-read_swap_cache_async.patch
mm-convert-swap_cluster_readahead-and-swap_vma_readahead-to-return-a-folio.patch
mm-convert-swap_cluster_readahead-and-swap_vma_readahead-to-return-a-folio-fix.patch
fs-remove-clean_page_buffers.patch
fs-convert-clean_buffers-to-take-a-folio.patch
fs-reduce-stack-usage-in-__mpage_writepage.patch
fs-reduce-stack-usage-in-do_mpage_readpage.patch
adfs-remove-writepage-implementation.patch
bfs-remove-writepage-implementation.patch
hfs-really-remove-hfs_writepage.patch
hfsplus-really-remove-hfsplus_writepage.patch
minix-remove-writepage-implementation.patch
ocfs2-remove-writepage-implementation.patch
sysv-remove-writepage-implementation.patch
ufs-remove-writepage-implementation.patch
fs-convert-block_write_full_page-to-block_write_full_folio.patch
fs-remove-the-bh_end_io-argument-from-__block_write_full_folio.patch
mm-remove-inc-dec-lruvec-page-state-functions.patch
slub-use-alloc_pages_node-in-alloc_slab_page.patch
slub-use-folio-apis-in-free_large_kmalloc.patch
slub-use-a-folio-in-__kmalloc_large_node.patch
mm-khugepaged-use-a-folio-more-in-collapse_file.patch
mm-memcontrol-remove-__mod_lruvec_page_state.patch
