From 87d2762e22f3ea6885862cb1fd419b77a5bcd8f7 Mon Sep 17 00:00:00 2001 From: Miaohe Lin Date: Tue, 22 Mar 2022 14:45:29 -0700 Subject: [PATCH] mm: remove unneeded local variable follflags We can pass FOLL_GET | FOLL_DUMP to follow_page directly to simplify the code a bit in add_page_for_migration and split_huge_pages_pid. Link: https://lkml.kernel.org/r/20220311072002.35575-1-linmiaohe@huawei.com Signed-off-by: Miaohe Lin Reviewed-by: Anshuman Khandual Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/huge_memory.c | 4 +--- mm/migrate.c | 4 +--- 2 files changed, 2 insertions(+), 6 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 88fe13a..50a9a29 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2953,7 +2953,6 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start, */ for (addr = vaddr_start; addr < vaddr_end; addr += PAGE_SIZE) { struct vm_area_struct *vma = find_vma(mm, addr); - unsigned int follflags; struct page *page; if (!vma || addr < vma->vm_start) @@ -2966,8 +2965,7 @@ static int split_huge_pages_pid(int pid, unsigned long vaddr_start, } /* FOLL_DUMP to ignore special (like zero) pages */ - follflags = FOLL_GET | FOLL_DUMP; - page = follow_page(vma, addr, follflags); + page = follow_page(vma, addr, FOLL_GET | FOLL_DUMP); if (IS_ERR(page)) continue; diff --git a/mm/migrate.c b/mm/migrate.c index 54b168a..4359d49 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1611,7 +1611,6 @@ static int add_page_for_migration(struct mm_struct *mm, unsigned long addr, { struct vm_area_struct *vma; struct page *page; - unsigned int follflags; int err; mmap_read_lock(mm); @@ -1621,8 +1620,7 @@ static int add_page_for_migration(struct mm_struct *mm, unsigned long addr, goto out; /* FOLL_DUMP to ignore special (like zero) pages */ - follflags = FOLL_GET | FOLL_DUMP; - page = follow_page(vma, addr, follflags); + page = follow_page(vma, addr, FOLL_GET | FOLL_DUMP); err = PTR_ERR(page); if (IS_ERR(page)) -- 2.7.4