From: Colin Ian King <colin.i.king@xxxxxxxxx> Subject: mm/migrate: remove redundant variables used in a for-loop The variable addr is being set and incremented in a for-loop but not actually being used. It is redundant and so addr and also variable start can be removed. Link: https://lkml.kernel.org/r/20211221185729.609630-1-colin.i.king@xxxxxxxxx Signed-off-by: Colin Ian King <colin.i.king@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/migrate.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/mm/migrate.c~mm-migrate-remove-redundant-variables-used-in-a-for-loop +++ a/mm/migrate.c @@ -2481,8 +2481,7 @@ static bool migrate_vma_check_page(struc static void migrate_vma_unmap(struct migrate_vma *migrate) { const unsigned long npages = migrate->npages; - const unsigned long start = migrate->start; - unsigned long addr, i, restore = 0; + unsigned long i, restore = 0; bool allow_drain = true; lru_add_drain(); @@ -2528,7 +2527,7 @@ static void migrate_vma_unmap(struct mig } } - for (addr = start, i = 0; i < npages && restore; addr += PAGE_SIZE, i++) { + for (i = 0; i < npages && restore; i++) { struct page *page = migrate_pfn_to_page(migrate->src[i]); if (!page || (migrate->src[i] & MIGRATE_PFN_MIGRATE)) _
