[RFC PATCH v4 01/18] mm/swap: remove unused parameter for reading swap header

[Lian Wang <lianux.mm@gmail.com>]

From: Kairui Song <kasong@tencent.com>

The swap_info_struct argument to read_swap_header() is unused. Remove it
and update the swapon() call site.

No functional change.

Signed-off-by: Kairui Song <kasong@tencent.com>
Signed-off-by: Lian Wang <lianux.mm@gmail.com>
---
 mm/swapfile.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/mm/swapfile.c b/mm/swapfile.c
index fcda5eba1714..c41c4d26a7e6 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -3630,9 +3630,8 @@ __weak unsigned long arch_max_swapfile_size(void)
 	return generic_max_swapfile_size();
 }
 
-static unsigned long read_swap_header(struct swap_info_struct *si,
-					union swap_header *swap_header,
-					struct inode *inode)
+static unsigned long read_swap_header(union swap_header *swap_header,
+				      struct inode *inode)
 {
 	int i;
 	unsigned long maxpages;
@@ -3863,7 +3862,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
 	}
 	swap_header = kmap_local_folio(folio, 0);
 
-	maxpages = read_swap_header(si, swap_header, inode);
+	maxpages = read_swap_header(swap_header, inode);
 	if (unlikely(!maxpages)) {
 		error = -EINVAL;
 		goto bad_swap_unlock_inode;