[alternative-merged] mm-memory-failurec-avoid-walking-page-table-when-vma_address-return-efault.patch removed from -mm tree

[alternative-merged] mm-memory-failurec-avoid-walking-page-table-when-vma_address-return-efault.patch removed from -mm tree

[Andrew Morton]

The patch titled
     Subject: mm/memory-failure.c: avoid walking page table when vma_address() return -EFAULT
has been removed from the -mm tree.  Its filename was
     mm-memory-failurec-avoid-walking-page-table-when-vma_address-return-efault.patch

This patch was dropped because an alternative patch was merged

------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm/memory-failure.c: avoid walking page table when vma_address() return -EFAULT

It's unnecessary to walk the page table when vma_address() return -EFAULT.
Return early if so to save some cpu cycles.

Link: https://lkml.kernel.org/r/20220210141733.1908-3-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memory-failure.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/mm/memory-failure.c~mm-memory-failurec-avoid-walking-page-table-when-vma_address-return-efault
+++ a/mm/memory-failure.c
@@ -315,6 +315,8 @@ static unsigned long dev_pagemap_mapping
 	pmd_t *pmd;
 	pte_t *pte;
 
+	if (address == -EFAULT)
+		return 0;
 	pgd = pgd_offset(vma->vm_mm, address);
 	if (!pgd_present(*pgd))
 		return 0;
_

Patches currently in -mm which might be from linmiaohe@huawei.com are

mm-memremap-avoid-calling-kasan_remove_zero_shadow-for-device-private-memory.patch
filemap-remove-find_get_pages.patch
mm-sparse-make-mminit_validate_memmodel_limits-static.patch
mm-vmalloc-remove-unneeded-function-forward-declaration.patch
mm-mmzoneh-remove-unused-macros.patch
mm-memory-failurec-minor-clean-up-for-memory_failure_dev_pagemap.patch
mm-memory-failurec-rework-the-signaling-logic-in-kill_proc.patch
mm-memory-failurec-remove-unneeded-orig_head.patch
mm-memory-failurec-remove-pageslab-check-in-hwpoison_filter_dev.patch
mm-memory-failurec-rework-the-try_to_unmap-logic-in-hwpoison_user_mappings.patch
mm-memory-failurec-remove-obsolete-comment-in-__soft_offline_page.patch
mm-memory-failurec-remove-unnecessary-pagetranstail-check.patch
mm-balloon_compaction-make-balloon-page-compaction-callbacks-static.patch
mm-memory_hotplug-remove-obsolete-comment-of-__add_pages.patch
mm-memory_hotplug-avoid-calling-zone_intersects-for-zone_normal.patch
mm-memory_hotplug-clean-up-try_offline_node.patch
mm-memory_hotplug-fix-misplaced-comment-in-offline_pages.patch
mm-highmem-remove-unnecessary-done-label.patch
mm-hmmc-remove-unneeded-local-variable-ret.patch