The quilt patch titled Subject: mm: convert wp_page_reuse() and finish_mkwrite_fault() to take a folio has been removed from the -mm tree. Its filename was mm-convert-wp_page_reuse-and-finish_mkwrite_fault-to-take-a-folio.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> Subject: mm: convert wp_page_reuse() and finish_mkwrite_fault() to take a folio Date: Wed, 18 Oct 2023 22:08:04 +0800 Saves one compound_head() call, also in preparation for page_cpupid_xchg_last() conversion. Link: https://lkml.kernel.org/r/20231018140806.2783514-18-wangkefeng.wang@xxxxxxxxxx Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> Cc: David Hildenbrand <david@xxxxxxxxxx> Cc: Huang Ying <ying.huang@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Juri Lelli <juri.lelli@xxxxxxxxxx> Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Vincent Guittot <vincent.guittot@xxxxxxxxxx> Cc: Zi Yan <ziy@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memory.c | 19 ++++++++++--------- 1 file changed, 10 insertions(+), 9 deletions(-) --- a/mm/memory.c~mm-convert-wp_page_reuse-and-finish_mkwrite_fault-to-take-a-folio +++ a/mm/memory.c @@ -3015,7 +3015,7 @@ static vm_fault_t fault_dirty_shared_pag * case, all we need to do here is to mark the page as writable and update * any related book-keeping. */ -static inline void wp_page_reuse(struct vm_fault *vmf) +static inline void wp_page_reuse(struct vm_fault *vmf, struct folio *folio) __releases(vmf->ptl) { struct vm_area_struct *vma = vmf->vma; @@ -3023,7 +3023,7 @@ static inline void wp_page_reuse(struct pte_t entry; VM_BUG_ON(!(vmf->flags & FAULT_FLAG_WRITE)); - VM_BUG_ON(page && PageAnon(page) && !PageAnonExclusive(page)); + VM_BUG_ON(folio && folio_test_anon(folio) && !PageAnonExclusive(page)); /* * Clear the pages cpupid information as the existing @@ -3258,6 +3258,7 @@ out: * writeable once the page is prepared * * @vmf: structure describing the fault + * @folio: the folio of vmf->page * * This function handles all that is needed to finish a write page fault in a * shared mapping due to PTE being read-only once the mapped page is prepared. @@ -3269,7 +3270,7 @@ out: * Return: %0 on success, %VM_FAULT_NOPAGE when PTE got changed before * we acquired PTE lock. */ -static vm_fault_t finish_mkwrite_fault(struct vm_fault *vmf) +static vm_fault_t finish_mkwrite_fault(struct vm_fault *vmf, struct folio *folio) { WARN_ON_ONCE(!(vmf->vma->vm_flags & VM_SHARED)); vmf->pte = pte_offset_map_lock(vmf->vma->vm_mm, vmf->pmd, vmf->address, @@ -3285,7 +3286,7 @@ static vm_fault_t finish_mkwrite_fault(s pte_unmap_unlock(vmf->pte, vmf->ptl); return VM_FAULT_NOPAGE; } - wp_page_reuse(vmf); + wp_page_reuse(vmf, folio); return 0; } @@ -3309,9 +3310,9 @@ static vm_fault_t wp_pfn_shared(struct v ret = vma->vm_ops->pfn_mkwrite(vmf); if (ret & (VM_FAULT_ERROR | VM_FAULT_NOPAGE)) return ret; - return finish_mkwrite_fault(vmf); + return finish_mkwrite_fault(vmf, NULL); } - wp_page_reuse(vmf); + wp_page_reuse(vmf, NULL); return 0; } @@ -3339,14 +3340,14 @@ static vm_fault_t wp_page_shared(struct folio_put(folio); return tmp; } - tmp = finish_mkwrite_fault(vmf); + tmp = finish_mkwrite_fault(vmf, folio); if (unlikely(tmp & (VM_FAULT_ERROR | VM_FAULT_NOPAGE))) { folio_unlock(folio); folio_put(folio); return tmp; } } else { - wp_page_reuse(vmf); + wp_page_reuse(vmf, folio); folio_lock(folio); } ret |= fault_dirty_shared_page(vmf); @@ -3491,7 +3492,7 @@ static vm_fault_t do_wp_page(struct vm_f pte_unmap_unlock(vmf->pte, vmf->ptl); return 0; } - wp_page_reuse(vmf); + wp_page_reuse(vmf, folio); return 0; } /* _ Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are