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Subject[PATCH 04/15] mm/swap: remove unneeded return value of free_swap_slot
Date
The return value of free_swap_slot is always 0 and also ignored now.
Remove it to clean up the code.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
---
include/linux/swap_slots.h | 2 +-
mm/swap_slots.c | 4 +---
2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/linux/swap_slots.h b/include/linux/swap_slots.h
index 347f1a304190..15adfb8c813a 100644
--- a/include/linux/swap_slots.h
+++ b/include/linux/swap_slots.h
@@ -24,7 +24,7 @@ struct swap_slots_cache {
void disable_swap_slots_cache_lock(void);
void reenable_swap_slots_cache_unlock(void);
void enable_swap_slots_cache(void);
-int free_swap_slot(swp_entry_t entry);
+void 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 0218ec1cd24c..2f877e6f87d7 100644
--- a/mm/swap_slots.c
+++ b/mm/swap_slots.c
@@ -269,7 +269,7 @@ static int refill_swap_slots_cache(struct swap_slots_cache *cache)
return cache->nr;
}

-int free_swap_slot(swp_entry_t entry)
+void free_swap_slot(swp_entry_t entry)
{
struct swap_slots_cache *cache;

@@ -297,8 +297,6 @@ int free_swap_slot(swp_entry_t entry)
direct_free:
swapcache_free_entries(&entry, 1);
}
-
- return 0;
}

swp_entry_t folio_alloc_swap(struct folio *folio)
--
2.23.0
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