Because do_migrate_range() is returning nothing, some 'ret' variable
usages are unnecessary. Remove unnecessary usage and reduce its scope.
Signed-off-by: SeongJae Park <sj@xxxxxxxxxx>
---
mm/memory_hotplug.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 6c615ba1a5c7..6df3072d11df 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1624,7 +1624,6 @@ static void do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
{
unsigned long pfn;
struct page *page, *head;
- int ret = 0;
LIST_HEAD(source);
static DEFINE_RATELIMIT_STATE(migrate_rs, DEFAULT_RATELIMIT_INTERVAL,
DEFAULT_RATELIMIT_BURST);
@@ -1678,7 +1677,6 @@ static void do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
page_is_file_lru(page));
} else {
- ret = -EBUSY;
if (__ratelimit(&migrate_rs)) {
pr_warn("failed to isolate pfn %lx\n", pfn);
dump_page(page, "isolation failed");
@@ -1692,6 +1690,7 @@ static void do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
.nmask = &nmask,
.gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL,
};
+ int ret;
/*
* We have checked that migration range is on a single zone so
--
2.25.1
