BackPup/Linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-25 21:21:09 -04:00
Code Issues Packages Projects Releases Wiki Activity

mm/page_table_check: use unsigned long for page counters and cleanup

Browse Source 
For consistency, use "unsigned long" for all page counters.

Also, reduce code duplication by calling __page_table_check_*_clear()
from __page_table_check_*_set() functions.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Pasha Tatashin <[email protected]>
Reviewed-by: Wei Xu <[email protected]>
Acked-by: David Rientjes <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Anshuman Khandual <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Greg Thelen <[email protected]>
Cc: H. Peter Anvin <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Muchun Song <[email protected]>
Cc: Paul Turner <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Zi Yan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Pasha Tatashin
2022-02-04 09:25:04 -08:00
committed by Linus Torvalds
parent fb5222aae6
commit 64d8b9e145
1 changed files with 7 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files
mm/page_table_check.c
+7 -28
View File
@@ -86,8 +86,8 @@ static void page_table_check_clear(struct mm_struct *mm, unsigned long addr,
{
struct page_ext *page_ext;
struct page *page;
unsigned long i;
bool anon;
int i;
if (!pfn_valid(pfn))
return;
@@ -121,8 +121,8 @@ static void page_table_check_set(struct mm_struct *mm, unsigned long addr,
{
struct page_ext *page_ext;
struct page *page;
unsigned long i;
bool anon;
int i;
if (!pfn_valid(pfn))
return;
@@ -152,10 +152,10 @@ static void page_table_check_set(struct mm_struct *mm, unsigned long addr,
void __page_table_check_zero(struct page *page, unsigned int order)
{
struct page_ext *page_ext = lookup_page_ext(page);
int i;
unsigned long i;
BUG_ON(!page_ext);
for (i = 0; i < (1 << order); i++) {
for (i = 0; i < (1ul << order); i++) {
struct page_table_check *ptc = get_page_table_check(page_ext);
BUG_ON(atomic_read(&ptc->anon_map_count));
@@ -206,17 +206,10 @@ EXPORT_SYMBOL(__page_table_check_pud_clear);
void __page_table_check_pte_set(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
pte_t old_pte;
if (&init_mm == mm)
return;
old_pte = *ptep;
if (pte_user_accessible_page(old_pte)) {
page_table_check_clear(mm, addr, pte_pfn(old_pte),
PAGE_SIZE >> PAGE_SHIFT);
}
__page_table_check_pte_clear(mm, addr, *ptep);
if (pte_user_accessible_page(pte)) {
page_table_check_set(mm, addr, pte_pfn(pte),
PAGE_SIZE >> PAGE_SHIFT,
@@ -228,17 +221,10 @@ EXPORT_SYMBOL(__page_table_check_pte_set);
void __page_table_check_pmd_set(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp, pmd_t pmd)
{
pmd_t old_pmd;
if (&init_mm == mm)
return;
old_pmd = *pmdp;
if (pmd_user_accessible_page(old_pmd)) {
page_table_check_clear(mm, addr, pmd_pfn(old_pmd),
PMD_PAGE_SIZE >> PAGE_SHIFT);
}
__page_table_check_pmd_clear(mm, addr, *pmdp);
if (pmd_user_accessible_page(pmd)) {
page_table_check_set(mm, addr, pmd_pfn(pmd),
PMD_PAGE_SIZE >> PAGE_SHIFT,
@@ -250,17 +236,10 @@ EXPORT_SYMBOL(__page_table_check_pmd_set);
void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr,
pud_t *pudp, pud_t pud)
{
pud_t old_pud;
if (&init_mm == mm)
return;
old_pud = *pudp;
if (pud_user_accessible_page(old_pud)) {
page_table_check_clear(mm, addr, pud_pfn(old_pud),
PUD_PAGE_SIZE >> PAGE_SHIFT);
}
__page_table_check_pud_clear(mm, addr, *pudp);
if (pud_user_accessible_page(pud)) {
page_table_check_set(mm, addr, pud_pfn(pud),
PUD_PAGE_SIZE >> PAGE_SHIFT,