mm/swapfile.c: __swap_entry_free() always free 1 entry

__swap_entry_free() always frees 1 entry.  Let's remove the usage.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/20200501015259.32237-2-richard.weiyang@gmail.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/swapfile.c b/mm/swapfile.c
index b365cbe..2aa2723 100644 (file)
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -1273,13 +1273,14 @@ unlock_out:
 }
 
 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);
@@ -1314,7 +1315,7 @@ 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);
 }
 
 /*
@@ -1737,7 +1738,7 @@ 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),