linux-kernel - [PATCH mmotm] mm: dont split thp page when syscall is called fix 4

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Message-ID: <alpine.LSU.2.11.1510161540460.31102@eggly.anvils>
Date:	Fri, 16 Oct 2015 15:46:03 -0700 (PDT)
From:	Hugh Dickins <hughd@...gle.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Minchan Kim <minchan@...nel.org>,
	"Kirill A. Shutemov" <kirill@...temov.name>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH mmotm] mm: dont split thp page when syscall is called fix 4

Compiler gives helpful warnings that madvise_free_pte_range()
has the args to split_huge_pmd() the wrong way round.

Signed-off-by: Hugh Dickins <hughd@...gle.com>

--- mmotm/mm/madvise.c	2015-10-15 15:26:59.839572171 -0700
+++ linux/mm/madvise.c	2015-10-16 11:59:10.144527813 -0700
@@ -283,7 +283,7 @@ static int madvise_free_pte_range(pmd_t
 	next = pmd_addr_end(addr, end);
 	if (pmd_trans_huge(*pmd)) {
 		if (next - addr != HPAGE_PMD_SIZE)
-			split_huge_pmd(vma, addr, pmd);
+			split_huge_pmd(vma, pmd, addr);
 		else if (!madvise_free_huge_pmd(tlb, vma, pmd, addr))
 			goto next;
 		/* fall through */
--
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