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authorMiaohe Lin <linmiaohe@huawei.com>2020-10-13 16:52:18 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-10-13 18:38:30 -0700
commitf3bc52cb04bcfccd12da3f03ca8bc50484898436 (patch)
tree3694acdab30586bba0f7c7af86ba848fdc74871b
parenta3e7bea060724c760906218f1c232c75ecb0c767 (diff)
mm/swap_slots.c: remove always zero and unused return value of enable_swap_slots_cache()
enable_swap_slots_cache() always return zero and its return value is just ignored by the caller. So make enable_swap_slots_cache() void. Signed-off-by: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Link: https://lkml.kernel.org/r/20200924113554.50614-1-linmiaohe@huawei.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--include/linux/swap_slots.h2
-rw-r--r--mm/swap_slots.c3
2 files changed, 2 insertions, 3 deletions
diff --git a/include/linux/swap_slots.h b/include/linux/swap_slots.h
index e36b200c2a77..347f1a304190 100644
--- a/include/linux/swap_slots.h
+++ b/include/linux/swap_slots.h
@@ -23,7 +23,7 @@ struct swap_slots_cache {
void disable_swap_slots_cache_lock(void);
void reenable_swap_slots_cache_unlock(void);
-int enable_swap_slots_cache(void);
+void enable_swap_slots_cache(void);
int free_swap_slot(swp_entry_t entry);
extern bool swap_slot_cache_enabled;
diff --git a/mm/swap_slots.c b/mm/swap_slots.c
index 3e6453573a89..0357fbe70645 100644
--- a/mm/swap_slots.c
+++ b/mm/swap_slots.c
@@ -237,7 +237,7 @@ static int free_slot_cache(unsigned int cpu)
return 0;
}
-int enable_swap_slots_cache(void)
+void enable_swap_slots_cache(void)
{
mutex_lock(&swap_slots_cache_enable_mutex);
if (!swap_slot_cache_initialized) {
@@ -255,7 +255,6 @@ int enable_swap_slots_cache(void)
__reenable_swap_slots_cache();
out_unlock:
mutex_unlock(&swap_slots_cache_enable_mutex);
- return 0;
}
/* called with swap slot cache's alloc lock held */