mm: migrate: change to use bool type for 'page_was_mapped'

Change to use bool type for 'page_was_mapped' variable making it more
readable.

Link: https://lkml.kernel.org/r/ce1279df18d2c163998c403e0b5ec6d3f6f90f7a.1629447552.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/migrate.c b/mm/migrate.c
index d5a1d38c993c8c33ee7019aa95773598b2953d6b..24c2ff8fe4c08c867c0ec124de3b5b73d8f29840 100644 (file)
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -960,7 +960,7 @@ static int __unmap_and_move(struct page *page, struct page *newpage,
                                int force, enum migrate_mode mode)
 {
        int rc = -EAGAIN;
-       int page_was_mapped = 0;
+       bool page_was_mapped = false;
        struct anon_vma *anon_vma = NULL;
        bool is_lru = !__PageMovable(page);
 
@@ -1063,7 +1063,7 @@ static int __unmap_and_move(struct page *page, struct page *newpage,
                VM_BUG_ON_PAGE(PageAnon(page) && !PageKsm(page) && !anon_vma,
                                page);
                try_to_migrate(page, 0);
-               page_was_mapped = 1;
+               page_was_mapped = true;
        }
 
        if (!page_mapped(page))