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mm/swap: remove unneeded return value of free_swap_slot

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The return value of free_swap_slot is always 0 and also ignored now. 
Remove it to clean up the code.

Link: https://lkml.kernel.org/r/20220509131416.17553-5-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Oscar Salvador <osalvador@suse.de>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Naoya Horiguchi <naoya.horiguchi@nec.com>
Cc: NeilBrown <neilb@suse.de>
Cc: Peter Xu <peterx@redhat.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin
2022-05-19 14:08:50 -07:00
committed by akpm
parent afba72b171
commit bc4a68adb1
2 changed files with 2 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/swap_slots.h
View File

@@ -24,7 +24,7 @@ struct swap_slots_cache {
void disable_swap_slots_cache_lock(void); void disable_swap_slots_cache_lock(void);
void reenable_swap_slots_cache_unlock(void); void reenable_swap_slots_cache_unlock(void);
void enable_swap_slots_cache(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; extern bool swap_slot_cache_enabled;

4
mm/swap_slots.c
View File

@@ -269,7 +269,7 @@ static int refill_swap_slots_cache(struct swap_slots_cache *cache)
return cache->nr; return cache->nr;
} }
int free_swap_slot(swp_entry_t entry) void free_swap_slot(swp_entry_t entry)
{ {
struct swap_slots_cache *cache; struct swap_slots_cache *cache;
@@ -297,8 +297,6 @@ int free_swap_slot(swp_entry_t entry)
direct_free: direct_free:
swapcache_free_entries(&entry, 1); swapcache_free_entries(&entry, 1);
} }
return 0;
} }
swp_entry_t folio_alloc_swap(struct folio *folio) swp_entry_t folio_alloc_swap(struct folio *folio)