The quilt patch titled
Subject: khugepaged: remove hpage from collapse_huge_page()
has been removed from the -mm tree. Its filename was
khugepaged-remove-hpage-from-collapse_huge_page.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: "Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>
Subject: khugepaged: remove hpage from collapse_huge_page()
Date: Wed, 3 Apr 2024 18:18:32 +0100
Work purely in terms of the folio. Removes a call to compound_head()
in put_page().
Link: https://lkml.kernel.org/r/20240403171838.1445826-4-willy@xxxxxxxxxxxxx
Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/khugepaged.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
--- a/mm/khugepaged.c~khugepaged-remove-hpage-from-collapse_huge_page
+++ a/mm/khugepaged.c
@@ -1082,7 +1082,6 @@ static int collapse_huge_page(struct mm_
pte_t *pte;
pgtable_t pgtable;
struct folio *folio;
- struct page *hpage;
spinlock_t *pmd_ptl, *pte_ptl;
int result = SCAN_FAIL;
struct vm_area_struct *vma;
@@ -1099,7 +1098,6 @@ static int collapse_huge_page(struct mm_
mmap_read_unlock(mm);
result = alloc_charge_folio(&folio, mm, cc);
- hpage = &folio->page;
if (result != SCAN_SUCCEED)
goto out_nolock;
@@ -1198,7 +1196,7 @@ static int collapse_huge_page(struct mm_
*/
anon_vma_unlock_write(vma->anon_vma);
- result = __collapse_huge_page_copy(pte, hpage, pmd, _pmd,
+ result = __collapse_huge_page_copy(pte, &folio->page, pmd, _pmd,
vma, address, pte_ptl,
&compound_pagelist);
pte_unmap(pte);
@@ -1213,7 +1211,7 @@ static int collapse_huge_page(struct mm_
__folio_mark_uptodate(folio);
pgtable = pmd_pgtable(_pmd);
- _pmd = mk_huge_pmd(hpage, vma->vm_page_prot);
+ _pmd = mk_huge_pmd(&folio->page, vma->vm_page_prot);
_pmd = maybe_pmd_mkwrite(pmd_mkdirty(_pmd), vma);
spin_lock(pmd_ptl);
@@ -1225,14 +1223,14 @@ static int collapse_huge_page(struct mm_
update_mmu_cache_pmd(vma, address, pmd);
spin_unlock(pmd_ptl);
- hpage = NULL;
+ folio = NULL;
result = SCAN_SUCCEED;
out_up_write:
mmap_write_unlock(mm);
out_nolock:
- if (hpage)
- put_page(hpage);
+ if (folio)
+ folio_put(folio);
trace_mm_collapse_huge_page(mm, result == SCAN_SUCCEED, result);
return result;
}
_
Patches currently in -mm which might be from willy@xxxxxxxxxxxxx are
doc-improve-the-description-of-__folio_mark_dirty.patch
buffer-add-kernel-doc-for-block_dirty_folio.patch
buffer-add-kernel-doc-for-try_to_free_buffers.patch
buffer-fix-__bread-and-__bread_gfp-kernel-doc.patch
buffer-add-kernel-doc-for-brelse-and-__brelse.patch
buffer-add-kernel-doc-for-bforget-and-__bforget.patch
buffer-improve-bdev_getblk-documentation.patch
doc-split-bufferrst-out-of-api-summaryrst.patch
doc-split-bufferrst-out-of-api-summaryrst-fix.patch
mm-memory-failure-remove-fsdax_pgoff-argument-from-__add_to_kill.patch
mm-memory-failure-pass-addr-to-__add_to_kill.patch
mm-return-the-address-from-page_mapped_in_vma.patch
mm-make-page_mapped_in_vma-conditional-on-config_memory_failure.patch
mm-memory-failure-convert-shake_page-to-shake_folio.patch
mm-convert-hugetlb_page_mapping_lock_write-to-folio.patch
mm-memory-failure-convert-memory_failure-to-use-a-folio.patch
mm-memory-failure-convert-hwpoison_user_mappings-to-take-a-folio.patch
mm-memory-failure-add-some-folio-conversions-to-unpoison_memory.patch
mm-memory-failure-use-folio-functions-throughout-collect_procs.patch
mm-memory-failure-pass-the-folio-to-collect_procs_ksm.patch
fscrypt-convert-bh_get_inode_and_lblk_num-to-use-a-folio.patch
f2fs-convert-f2fs_clear_page_cache_dirty_tag-to-use-a-folio.patch
memory-failure-remove-calls-to-page_mapping.patch
migrate-expand-the-use-of-folio-in-__migrate_device_pages.patch
userfault-expand-folio-use-in-mfill_atomic_install_pte.patch
mm-remove-page_mapping.patch
mm-remove-page_cache_alloc.patch
mm-remove-put_devmap_managed_page.patch
mm-convert-put_devmap_managed_page_refs-to-put_devmap_managed_folio_refs.patch
mm-remove-page_ref_sub_return.patch
gup-use-folios-for-gup_devmap.patch
mm-add-kernel-doc-for-folio_mark_accessed.patch
mm-remove-pagereferenced.patch
mm-simplify-thp_vma_allowable_order.patch
