The patch titled
Subject: mm/mempolicy: rewrite alloc_pages documentation
has been added to the -mm tree. Its filename is
mm-mempolicy-rewrite-alloc_pages-documentation.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/mm-mempolicy-rewrite-alloc_pages-documentation.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/mm-mempolicy-rewrite-alloc_pages-documentation.patch
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------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: mm/mempolicy: rewrite alloc_pages documentation
Document alloc_pages() for both NUMA and non-NUMA cases as kernel-doc
doesn't care.
Link: https://lkml.kernel.org/r/20210225150642.2582252-6-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Acked-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mempolicy.c | 21 ++++++++++-----------
1 file changed, 10 insertions(+), 11 deletions(-)
--- a/mm/mempolicy.c~mm-mempolicy-rewrite-alloc_pages-documentation
+++ a/mm/mempolicy.c
@@ -2245,19 +2245,18 @@ out:
EXPORT_SYMBOL(alloc_pages_vma);
/**
- * alloc_pages - Allocate pages.
+ * alloc_pages - Allocate pages.
+ * @gfp: GFP flags.
+ * @order: Power of two of number of pages to allocate.
*
- * @gfp:
- * %GFP_USER user allocation,
- * %GFP_KERNEL kernel allocation,
- * %GFP_HIGHMEM highmem allocation,
- * %GFP_FS don't call back into a file system.
- * %GFP_ATOMIC don't sleep.
- * @order: Power of two of allocation size in pages. 0 is a single page.
+ * Allocate 1 << @order contiguous pages. The physical address of the
+ * first page is naturally aligned (eg an order-3 allocation will be aligned
+ * to a multiple of 8 * PAGE_SIZE bytes). The NUMA policy of the current
+ * process is honoured when in process context.
*
- * Allocate a page from the kernel page pool. When not in
- * interrupt context and apply the current process NUMA policy.
- * Returns NULL when no page can be allocated.
+ * Context: Can be called from any context, providing the appropriate GFP
+ * flags are used.
+ * Return: The page on success or NULL if allocation fails.
*/
struct page *alloc_pages(gfp_t gfp, unsigned order)
{
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
mm-filemap-use-filemap_read_page-in-filemap_fault.patch
mm-filemap-drop-check-for-truncated-page-after-i-o.patch
mm-page_alloc-rename-alloc_mask-to-alloc_gfp.patch
mm-page_alloc-rename-gfp_mask-to-gfp.patch
mm-page_alloc-combine-__alloc_pages-and-__alloc_pages_nodemask.patch
mm-mempolicy-rename-alloc_pages_current-to-alloc_pages.patch
mm-mempolicy-rewrite-alloc_pages-documentation.patch
mm-mempolicy-rewrite-alloc_pages_vma-documentation.patch
mm-mempolicy-fix-mpol_misplaced-kernel-doc.patch
