linux-kernel - [PATCH 3/7] mm/khugepaged: trivial typo and codestyle cleanup

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Date:   Sat, 11 Jun 2022 16:47:27 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <aarcange@...hat.com>, <willy@...radead.org>, <vbabka@...e.cz>,
        <dhowells@...hat.com>, <neilb@...e.de>, <apopple@...dia.com>,
        <david@...hat.com>, <surenb@...gle.com>, <peterx@...hat.com>,
        <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH 3/7] mm/khugepaged: trivial typo and codestyle cleanup

Fix some typos and tweak the code to meet codestyle. No functional
change intended.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/khugepaged.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index a8adb2d1e9c6..1b5dd3820eac 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -260,7 +260,7 @@ static ssize_t khugepaged_max_ptes_none_store(struct kobject *kobj,
 	unsigned long max_ptes_none;
 
 	err = kstrtoul(buf, 10, &max_ptes_none);
-	if (err || max_ptes_none > HPAGE_PMD_NR-1)
+	if (err || max_ptes_none > HPAGE_PMD_NR - 1)
 		return -EINVAL;
 
 	khugepaged_max_ptes_none = max_ptes_none;
@@ -286,7 +286,7 @@ static ssize_t khugepaged_max_ptes_swap_store(struct kobject *kobj,
 	unsigned long max_ptes_swap;
 
 	err  = kstrtoul(buf, 10, &max_ptes_swap);
-	if (err || max_ptes_swap > HPAGE_PMD_NR-1)
+	if (err || max_ptes_swap > HPAGE_PMD_NR - 1)
 		return -EINVAL;
 
 	khugepaged_max_ptes_swap = max_ptes_swap;
@@ -313,7 +313,7 @@ static ssize_t khugepaged_max_ptes_shared_store(struct kobject *kobj,
 	unsigned long max_ptes_shared;
 
 	err  = kstrtoul(buf, 10, &max_ptes_shared);
-	if (err || max_ptes_shared > HPAGE_PMD_NR-1)
+	if (err || max_ptes_shared > HPAGE_PMD_NR - 1)
 		return -EINVAL;
 
 	khugepaged_max_ptes_shared = max_ptes_shared;
@@ -599,7 +599,7 @@ static int __collapse_huge_page_isolate(struct vm_area_struct *vma,
 	int none_or_zero = 0, shared = 0, result = 0, referenced = 0;
 	bool writable = false;
 
-	for (_pte = pte; _pte < pte+HPAGE_PMD_NR;
+	for (_pte = pte; _pte < pte + HPAGE_PMD_NR;
 	     _pte++, address += PAGE_SIZE) {
 		pte_t pteval = *_pte;
 		if (pte_none(pteval) || (pte_present(pteval) &&
@@ -1216,7 +1216,7 @@ static int khugepaged_scan_pmd(struct mm_struct *mm,
 
 	memset(khugepaged_node_load, 0, sizeof(khugepaged_node_load));
 	pte = pte_offset_map_lock(mm, pmd, address, &ptl);
-	for (_address = address, _pte = pte; _pte < pte+HPAGE_PMD_NR;
+	for (_address = address, _pte = pte; _pte < pte + HPAGE_PMD_NR;
 	     _pte++, _address += PAGE_SIZE) {
 		pte_t pteval = *_pte;
 		if (is_swap_pte(pteval)) {
@@ -1306,7 +1306,7 @@ static int khugepaged_scan_pmd(struct mm_struct *mm,
 		/*
 		 * Check if the page has any GUP (or other external) pins.
 		 *
-		 * Here the check is racy it may see totmal_mapcount > refcount
+		 * Here the check is racy it may see total_mapcount > refcount
 		 * in some cases.
 		 * For example, one process with one forked child process.
 		 * The parent has the PMD split due to MADV_DONTNEED, then
@@ -1557,7 +1557,7 @@ static void retract_page_tables(struct address_space *mapping, pgoff_t pgoff)
 		 * mmap_write_lock(mm) as PMD-mapping is likely to be split
 		 * later.
 		 *
-		 * Not that vma->anon_vma check is racy: it can be set up after
+		 * Note that vma->anon_vma check is racy: it can be set up after
 		 * the check but before we took mmap_lock by the fault path.
 		 * But page lock would prevent establishing any new ptes of the
 		 * page, so we are safe.
-- 
2.23.0