linux-kernel - [PATCH 2/3] mm/swapfile.c: __swap_entry

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Date:   Fri,  1 May 2020 01:52:58 +0000
From:   Wei Yang <richard.weiyang@...il.com>
To:     akpm@...ux-foundation.org, ying.huang@...el.com
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        Wei Yang <richard.weiyang@...il.com>
Subject: [PATCH 2/3] mm/swapfile.c: __swap_entry_free() always free 1 entry

__swap_entry_free() always free 1 entry, let's remove the usage.

Signed-off-by: Wei Yang <richard.weiyang@...il.com>
---
 mm/swapfile.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/mm/swapfile.c b/mm/swapfile.c
index f73e0c11fab9..1a877d1d40e3 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1251,13 +1251,14 @@ struct swap_info_struct *get_swap_device(swp_entry_t entry)
 }
 
 static unsigned char __swap_entry_free(struct swap_info_struct *p,
-				       swp_entry_t entry, unsigned char usage)
+				       swp_entry_t entry)
 {
 	struct swap_cluster_info *ci;
 	unsigned long offset = swp_offset(entry);
+	unsigned char usage;
 
 	ci = lock_cluster_or_swap_info(p, offset);
-	usage = __swap_entry_free_locked(p, offset, usage);
+	usage = __swap_entry_free_locked(p, offset, 1);
 	unlock_cluster_or_swap_info(p, ci);
 	if (!usage)
 		free_swap_slot(entry);
@@ -1292,7 +1293,7 @@ void swap_free(swp_entry_t entry)
 
 	p = _swap_info_get(entry);
 	if (p)
-		__swap_entry_free(p, entry, 1);
+		__swap_entry_free(p, entry);
 }
 
 /*
@@ -1715,7 +1716,7 @@ int free_swap_and_cache(swp_entry_t entry)
 
 	p = _swap_info_get(entry);
 	if (p) {
-		count = __swap_entry_free(p, entry, 1);
+		count = __swap_entry_free(p, entry);
 		if (count == SWAP_HAS_CACHE &&
 		    !swap_page_trans_huge_swapped(p, entry))
 			__try_to_reclaim_swap(p, swp_offset(entry),
-- 
2.23.0