linux-kernel - [PATCH v3 2/6] mm/migrate: move migrate_vma_collect

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Message-ID: <20201106005147.20113-3-rcampbell@nvidia.com>
Date:   Thu, 5 Nov 2020 16:51:43 -0800
From:   Ralph Campbell <rcampbell@...dia.com>
To:     <linux-mm@...ck.org>, <nouveau@...ts.freedesktop.org>,
        <linux-kselftest@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Jerome Glisse <jglisse@...hat.com>,
        John Hubbard <jhubbard@...dia.com>,
        Alistair Popple <apopple@...dia.com>,
        Christoph Hellwig <hch@....de>,
        "Jason Gunthorpe" <jgg@...dia.com>,
        Bharata B Rao <bharata@...ux.ibm.com>,
        Zi Yan <ziy@...dia.com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Yang Shi <yang.shi@...ux.alibaba.com>,
        Ben Skeggs <bskeggs@...hat.com>, Shuah Khan <shuah@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Ralph Campbell <rcampbell@...dia.com>
Subject: [PATCH v3 2/6] mm/migrate: move migrate_vma_collect_skip()

Move the definition of migrate_vma_collect_skip() to make it callable
by migrate_vma_collect_hole(). This helps make the next patch easier
to read.

Signed-off-by: Ralph Campbell <rcampbell@...dia.com>
---
 mm/migrate.c | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index c1585ec29827..665516319b66 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -2253,6 +2253,21 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
 #endif /* CONFIG_NUMA */
 
 #ifdef CONFIG_DEVICE_PRIVATE
+static int migrate_vma_collect_skip(unsigned long start,
+				    unsigned long end,
+				    struct mm_walk *walk)
+{
+	struct migrate_vma *migrate = walk->private;
+	unsigned long addr;
+
+	for (addr = start; addr < end; addr += PAGE_SIZE) {
+		migrate->dst[migrate->npages] = 0;
+		migrate->src[migrate->npages++] = 0;
+	}
+
+	return 0;
+}
+
 static int migrate_vma_collect_hole(unsigned long start,
 				    unsigned long end,
 				    __always_unused int depth,
@@ -2281,21 +2296,6 @@ static int migrate_vma_collect_hole(unsigned long start,
 	return 0;
 }
 
-static int migrate_vma_collect_skip(unsigned long start,
-				    unsigned long end,
-				    struct mm_walk *walk)
-{
-	struct migrate_vma *migrate = walk->private;
-	unsigned long addr;
-
-	for (addr = start; addr < end; addr += PAGE_SIZE) {
-		migrate->dst[migrate->npages] = 0;
-		migrate->src[migrate->npages++] = 0;
-	}
-
-	return 0;
-}
-
 static int migrate_vma_collect_pmd(pmd_t *pmdp,
 				   unsigned long start,
 				   unsigned long end,
-- 
2.20.1