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mm/damon/paddr: initialize 'folio' variables to NULL for clarity

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In damon_pa_mark_accessed_or_deactivate(), damon_pa_pageout(),
damon_pa_migrate(), and damon_pa_stat(), the local variable 'folio' is
declared but not initialized.

Initialize 'folio' to NULL to improve code readability and
maintainability.

Link: https://patch.msgid.link/20260104013255.16962-1-yangqixiao@inspur.com
Link: https://lkml.kernel.org/r/20260108013041.80601-1-sj@kernel.org
Signed-off-by: Aaron Yang <yangqixiao@inspur.com>
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Aaron Yang 2026-01-07 17:30:38 -08:00 • committed by Andrew Morton
parent 19c4707b53
commit 35520a712f
1 changed files with 4 additions and 4 deletions
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8
mm/damon/paddr.c
View file

@ -156,7 +156,7 @@ static unsigned long damon_pa_pageout(struct damon_region *r,
LIST_HEAD(folio_list);
bool install_young_filter = true;
struct damos_filter *filter;
struct folio *folio;
struct folio *folio = NULL;
/* check access in page level again by default */
damos_for_each_ops_filter(filter, s) {
@ -212,7 +212,7 @@ static inline unsigned long damon_pa_mark_accessed_or_deactivate(
unsigned long *sz_filter_passed)
{
phys_addr_t addr, applied = 0;
struct folio *folio;
struct folio *folio = NULL;
addr = damon_pa_phys_addr(r->ar.start, addr_unit);
while (addr < damon_pa_phys_addr(r->ar.end, addr_unit)) {
@ -262,7 +262,7 @@ static unsigned long damon_pa_migrate(struct damon_region *r,
{
phys_addr_t addr, applied;
LIST_HEAD(folio_list);
struct folio *folio;
struct folio *folio = NULL;
addr = damon_pa_phys_addr(r->ar.start, addr_unit);
while (addr < damon_pa_phys_addr(r->ar.end, addr_unit)) {
@ -295,7 +295,7 @@ static unsigned long damon_pa_stat(struct damon_region *r,
unsigned long *sz_filter_passed)
{
phys_addr_t addr;
struct folio *folio;
struct folio *folio = NULL;
if (!damos_ops_has_filter(s))
return 0;