+ mm-huge_memoryc-remove-unnecessary-local-variable-ret2.patch added to -mm tree

+ mm-huge_memoryc-remove-unnecessary-local-variable-ret2.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/huge_memory.c: remove unnecessary local variable ret2
has been added to the -mm tree.  Its filename is
     mm-huge_memoryc-remove-unnecessary-local-variable-ret2.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-huge_memoryc-remove-unnecessary-local-variable-ret2.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-huge_memoryc-remove-unnecessary-local-variable-ret2.patch

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------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm/huge_memory.c: remove unnecessary local variable ret2

There is no need to use a new local variable ret2 to get the return value
of handle_userfault(). Use ret directly to make code more succinct.

Link: https://lkml.kernel.org/r/20210210072409.60587-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/huge_memory.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

--- a/mm/huge_memory.c~mm-huge_memoryc-remove-unnecessary-local-variable-ret2
+++ a/mm/huge_memory.c
@@ -624,14 +624,12 @@ static vm_fault_t __do_huge_pmd_anonymou
 
 		/* Deliver the page fault to userland */
 		if (userfaultfd_missing(vma)) {
-			vm_fault_t ret2;
-
 			spin_unlock(vmf->ptl);
 			put_page(page);
 			pte_free(vma->vm_mm, pgtable);
-			ret2 = handle_userfault(vmf, VM_UFFD_MISSING);
-			VM_BUG_ON(ret2 & VM_FAULT_FALLBACK);
-			return ret2;
+			ret = handle_userfault(vmf, VM_UFFD_MISSING);
+			VM_BUG_ON(ret & VM_FAULT_FALLBACK);
+			return ret;
 		}
 
 		entry = mk_huge_pmd(page, vma->vm_page_prot);
_

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

hugetlb_cgroup-fix-imbalanced-css_get-and-css_put-pair-for-shared-mappings.patch
mm-hugetlb-remove-redundant-reservation-check-condition-in-alloc_huge_page.patch
mm-hugetlb-use-some-helper-functions-to-cleanup-code.patch
mm-hugetlb-optimize-the-surplus-state-transfer-code-in-move_hugetlb_state.patch
hugetlb_cgroup-remove-unnecessary-vm_bug_on_page-in-hugetlb_cgroup_migrate.patch
mm-hugetlb-simplify-the-code-when-alloc_huge_page-failed-in-hugetlb_no_page.patch
mm-hugetlb-avoid-calculating-fault_mutex_hash-in-truncate_op-case.patch
khugepaged-remove-unneeded-return-value-of-khugepaged_collapse_pte_mapped_thps.patch
khugepaged-reuse-the-smp_wmb-inside-__setpageuptodate.patch
khugepaged-use-helper-khugepaged_test_exit-in-__khugepaged_enter.patch
khugepaged-fix-wrong-result-value-for-trace_mm_collapse_huge_page_isolate.patch
mm-huge_memoryc-remove-unnecessary-local-variable-ret2.patch