mm/vmscan: remove misleading setting to sc->priority

The priority field of sc is used to control how many pages we should scan
at once while we always traverse the list to shrink the pages in these
functions.  So these settings are unneeded and misleading.

Link: https://lkml.kernel.org/r/20210717065911.61497-3-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Alex Shi <alexs@kernel.org>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: John Hubbard <jhubbard@nvidia.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shaohua Li <shli@fb.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 776f45692e6856bc8f184573dadcffc18281a416..00e468b4c1c1dd96a2de9dd454c1838e9e73d3b0 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1827,7 +1827,6 @@ unsigned int reclaim_clean_pages_from_list(struct zone *zone,
 {
        struct scan_control sc = {
                .gfp_mask = GFP_KERNEL,
-               .priority = DEF_PRIORITY,
                .may_unmap = 1,
        };
        struct reclaim_stat stat;
@@ -2452,7 +2451,6 @@ unsigned long reclaim_pages(struct list_head *page_list)
        unsigned int noreclaim_flag;
        struct scan_control sc = {
                .gfp_mask = GFP_KERNEL,
-               .priority = DEF_PRIORITY,
                .may_writepage = 1,
                .may_unmap = 1,
                .may_swap = 1,