diff options
| author | Matthew Wilcox (Oracle) <willy@infradead.org> | 2025-11-13 00:09:16 +0000 |
|---|---|---|
| committer | Vlastimil Babka <vbabka@suse.cz> | 2025-11-13 11:01:08 +0100 |
| commit | ee1ee8abc4197e21594ca29348629ccbfff4daec (patch) | |
| tree | 048c8a84ca69d70b217c2b311654ddb56e0fcee9 /include/linux | |
| parent | 2bcd3800f2da1be13b972858f63c66d035b1ec6d (diff) | |
slab: Remove folio references from __ksize()
In the future, we will separate slab, folio and page from each other
and calling virt_to_folio() on an address allocated from slab will
return NULL. Delay the conversion from struct page to struct slab
until we know we're not dealing with a large kmalloc allocation.
There's a minor win for large kmalloc allocations as we avoid the
compound_head() hidden in virt_to_folio().
This deprecates calling ksize() on memory allocated by alloc_pages().
Today it becomes a warning and support will be removed entirely in
the future.
Introduce large_kmalloc_size() to abstract how we represent the size
of a large kmalloc allocation. For now, this is the same as
page_size(), but it will change with separately allocated memdescs.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Link: https://patch.msgid.link/20251113000932.1589073-3-willy@infradead.org
Acked-by: David Hildenbrand (Red Hat) <david@kernel.org>
Reviewed-by: Harry Yoo <harry.yoo@oracle.com>
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/page-flags.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 6d5e44968eab..f7a0e4af0c73 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -1064,7 +1064,7 @@ PAGE_TYPE_OPS(Zsmalloc, zsmalloc, zsmalloc) * Serialized with zone lock. */ PAGE_TYPE_OPS(Unaccepted, unaccepted, unaccepted) -FOLIO_TYPE_OPS(large_kmalloc, large_kmalloc) +PAGE_TYPE_OPS(LargeKmalloc, large_kmalloc, large_kmalloc) /** * PageHuge - Determine if the page belongs to hugetlbfs |