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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Huang Pei <huangpei@loongson.cn>
Subject: [PATCH 4.19 090/120] [PATCH] Revert "MIPS: add PMD table accounting into MIPSpmd_alloc_one"
Date:   Mon, 26 Jul 2021 17:39:02 +0200
Message-Id: <20210726153835.272293632@linuxfoundation.org>
In-Reply-To: <20210726153832.339431936@linuxfoundation.org>
References: <20210726153832.339431936@linuxfoundation.org>
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From: Huang Pei <huangpei@loongson.cn>

This reverts commit 68046cc531577b8f0ebe67ccf18b9c70106d7937 which is
commit ed914d48b6a1040d1039d371b56273d422c0081e upstream.

Commit b2b29d6d011944 (mm: account PMD tables like PTE tables) is
introduced between v5.9 and v5.10, so this fix (commit 002d8b395fa1)
should NOT apply to any pre-5.10 branch.

Signed-off-by: Huang Pei <huangpei@loongson.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 arch/mips/include/asm/pgalloc.h |   10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

--- a/arch/mips/include/asm/pgalloc.h
+++ b/arch/mips/include/asm/pgalloc.h
@@ -93,15 +93,11 @@ do {							\
 
 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
 {
-	pmd_t *pmd = NULL;
-	struct page *pg;
+	pmd_t *pmd;
 
-	pg = alloc_pages(GFP_KERNEL | __GFP_ACCOUNT, PMD_ORDER);
-	if (pg) {
-		pgtable_pmd_page_ctor(pg);
-		pmd = (pmd_t *)page_address(pg);
+	pmd = (pmd_t *) __get_free_pages(GFP_KERNEL, PMD_ORDER);
+	if (pmd)
 		pmd_init((unsigned long)pmd, (unsigned long)invalid_pte_table);
-	}
 	return pmd;
 }