+ mm-hugetlb-simplify-the-code-when-alloc_huge_page-failed-in-hugetlb_no_page.patch added to -mm tree

+ mm-hugetlb-simplify-the-code-when-alloc_huge_page-failed-in-hugetlb_no_page.patch added to -mm tree

[akpm]

The patch titled
     Subject: mm/hugetlb: simplify the code when alloc_huge_page() failed in hugetlb_no_page()
has been added to the -mm tree.  Its filename is
     mm-hugetlb-simplify-the-code-when-alloc_huge_page-failed-in-hugetlb_no_page.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/mm-hugetlb-simplify-the-code-when-alloc_huge_page-failed-in-hugetlb_no_page.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/mm-hugetlb-simplify-the-code-when-alloc_huge_page-failed-in-hugetlb_no_page.patch

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------------------------------------------------------
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm/hugetlb: simplify the code when alloc_huge_page() failed in hugetlb_no_page()

Rework the error handling code when alloc_huge_page() failed to remove
some duplicated code and simplify the code slightly.

Link: https://lkml.kernel.org/r/20210308112809.26107-5-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/hugetlb.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

--- a/mm/hugetlb.c~mm-hugetlb-simplify-the-code-when-alloc_huge_page-failed-in-hugetlb_no_page
+++ a/mm/hugetlb.c
@@ -4396,13 +4396,10 @@ retry:
 			 * sure there really is no pte entry.
 			 */
 			ptl = huge_pte_lock(h, mm, ptep);
-			if (!huge_pte_none(huge_ptep_get(ptep))) {
-				ret = 0;
-				spin_unlock(ptl);
-				goto out;
-			}
+			ret = 0;
+			if (huge_pte_none(huge_ptep_get(ptep)))
+				ret = vmf_error(PTR_ERR(page));
 			spin_unlock(ptl);
-			ret = vmf_error(PTR_ERR(page));
 			goto out;
 		}
 		clear_huge_page(page, address, pages_per_huge_page(h));
_

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