The patch titled Subject: mm: memory: rename page_copy_prealloc() to folio_prealloc() has been added to the -mm mm-unstable branch. Its filename is mm-memory-rename-page_copy_prealloc-to-folio_prealloc.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memory-rename-page_copy_prealloc-to-folio_prealloc.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> Subject: mm: memory: rename page_copy_prealloc() to folio_prealloc() Date: Sat, 18 Nov 2023 10:32:30 +0800 Let's rename page_copy_prealloc() to folio_prealloc(), which could be reused in more functons, as it maybe zero the new page, pass a new need_zero to it, and call the vma_alloc_zeroed_movable_folio() if need_zero is true. Link: https://lkml.kernel.org/r/20231118023232.1409103-4-wangkefeng.wang@xxxxxxxxxx Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> Reviewed-by: Sidhartha Kumar <sidhartha.kumar@xxxxxxxxxx> Reviewed-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx> Cc: David Hildenbrand <david@xxxxxxxxxx> Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memory.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) --- a/mm/memory.c~mm-memory-rename-page_copy_prealloc-to-folio_prealloc +++ a/mm/memory.c @@ -992,12 +992,17 @@ copy_present_pte(struct vm_area_struct * return 0; } -static inline struct folio *page_copy_prealloc(struct mm_struct *src_mm, - struct vm_area_struct *vma, unsigned long addr) +static inline struct folio *folio_prealloc(struct mm_struct *src_mm, + struct vm_area_struct *vma, unsigned long addr, bool need_zero) { struct folio *new_folio; - new_folio = vma_alloc_folio(GFP_HIGHUSER_MOVABLE, 0, vma, addr, false); + if (need_zero) + new_folio = vma_alloc_zeroed_movable_folio(vma, addr); + else + new_folio = vma_alloc_folio(GFP_HIGHUSER_MOVABLE, 0, vma, + addr, false); + if (!new_folio) return NULL; @@ -1129,7 +1134,7 @@ again: } else if (ret == -EBUSY) { goto out; } else if (ret == -EAGAIN) { - prealloc = page_copy_prealloc(src_mm, src_vma, addr); + prealloc = folio_prealloc(src_mm, src_vma, addr, false); if (!prealloc) return -ENOMEM; } else if (ret) { _ Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are mm-ksm-use-more-folio-api-in-ksm_might_need_to_copy.patch mm-memory-use-a-folio-in-validate_page_before_insert.patch mm-memory-rename-page_copy_prealloc-to-folio_prealloc.patch mm-memory-use-a-folio-in-do_cow_fault.patch mm-memory-use-folio_prealloc-in-wp_page_copy.patch