f2fs: code cleanup for scan_nat_page() and build_free_nids()

This patch does two cleanups:
1. remove unused variable "fcnt" in build_free_nids().
2. make scan_nat_page() as void type and remove useless variable "fcnt".

Signed-off-by: Haicheng Li <haicheng.li@linux.intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index d682f34..122200e 100644 (file)
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1292,12 +1292,11 @@ static void remove_free_nid(struct f2fs_nm_info *nm_i, nid_t nid)
        spin_unlock(&nm_i->free_nid_list_lock);
 }
 
-static int scan_nat_page(struct f2fs_nm_info *nm_i,
+static void scan_nat_page(struct f2fs_nm_info *nm_i,
                        struct page *nat_page, nid_t start_nid)
 {
        struct f2fs_nat_block *nat_blk = page_address(nat_page);
        block_t blk_addr;
-       int fcnt = 0;
        int i;
 
        i = start_nid % NAT_ENTRY_PER_BLOCK;
@@ -1308,9 +1307,8 @@ static int scan_nat_page(struct f2fs_nm_info *nm_i,
                blk_addr  = le32_to_cpu(nat_blk->entries[i].block_addr);
                BUG_ON(blk_addr == NEW_ADDR);
                if (blk_addr == NULL_ADDR)
-                       fcnt += add_free_nid(nm_i, start_nid);
+                       add_free_nid(nm_i, start_nid);
        }
-       return fcnt;
 }
 
 static void build_free_nids(struct f2fs_sb_info *sbi)
@@ -1319,7 +1317,7 @@ static void build_free_nids(struct f2fs_sb_info *sbi)
        struct f2fs_nm_info *nm_i = NM_I(sbi);
        struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA);
        struct f2fs_summary_block *sum = curseg->sum_blk;
-       int fcnt = 0, i = 0;
+       int i = 0;
        nid_t nid = nm_i->next_scan_nid;
 
        /* Enough entries */
@@ -1332,7 +1330,7 @@ static void build_free_nids(struct f2fs_sb_info *sbi)
        while (1) {
                struct page *page = get_current_nat_page(sbi, nid);
 
-               fcnt += scan_nat_page(nm_i, page, nid);
+               scan_nat_page(nm_i, page, nid);
                f2fs_put_page(page, 1);
 
                nid += (NAT_ENTRY_PER_BLOCK - (nid % NAT_ENTRY_PER_BLOCK));