From: Aaron Yang Date: Thu, 8 Jan 2026 01:30:38 +0000 (-0800) Subject: mm/damon/paddr: initialize 'folio' variables to NULL for clarity X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=35520a712f9956657dfd0eaf4d9e873cd96ec43a;p=thirdparty%2Flinux.git mm/damon/paddr: initialize 'folio' variables to NULL for clarity 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 Reviewed-by: SeongJae Park Signed-off-by: SeongJae Park Signed-off-by: Andrew Morton --- diff --git a/mm/damon/paddr.c b/mm/damon/paddr.c index 07a8aead439eb..7d887a3c08665 100644 --- a/mm/damon/paddr.c +++ b/mm/damon/paddr.c @@ -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;