When !CONFIG_VM_BUG_ON, there is warning of clang-analyzer-deadcode.DeadStores: Value stored to 'mt' during its initialization is never read.
Signed-off-by: Maria Yu quic_aiquny@quicinc.com --- mm/page_isolation.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/mm/page_isolation.c b/mm/page_isolation.c index 04141a9bea70..51d5c8025f77 100644 --- a/mm/page_isolation.c +++ b/mm/page_isolation.c @@ -330,9 +330,7 @@ static int isolate_single_pageblock(unsigned long boundary_pfn, int flags, zone->zone_start_pfn);
if (skip_isolation) { - int mt = get_pageblock_migratetype(pfn_to_page(isolate_pageblock)); - - VM_BUG_ON(!is_migrate_isolate(mt)); + VM_BUG_ON(!is_migrate_isolate(get_pageblock_migratetype(pfn_to_page(isolate_pageblock)))); } else { ret = set_migratetype_isolate(pfn_to_page(isolate_pageblock), migratetype, flags, isolate_pageblock, isolate_pageblock + pageblock_nr_pages);