f2fs: clean up unused variables and return values

This patch cleans up a couple of unnecessary codes related to unused variables
and return values.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

3 files changed, 5 insertions, 17 deletions

diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c
index eda8230deb0c..b0ec721e984a 100644
--- a/fs/f2fs/gc.c
+++ b/fs/f2fs/gc.c
@@ -390,9 +390,7 @@ next_step:
                 }
 
                 err = check_valid_map(sbi, segno, off);
-                if (err == GC_ERROR)
-                        return err;
-                else if (err == GC_NEXT)
+                if (err == GC_NEXT)
                         continue;
 
                 if (initial) {
@@ -550,9 +548,7 @@ next_step:
                 }
 
                 err = check_valid_map(sbi, segno, off);
-                if (err == GC_ERROR)
-                        goto stop;
-                else if (err == GC_NEXT)
+                if (err == GC_NEXT)
                         continue;
 
                 if (phase == 0) {
@@ -562,9 +558,7 @@ next_step:
 
                 /* Get an inode by ino with checking validity */
                 err = check_dnode(sbi, entry, &dni, start_addr + off, &nofs);
-                if (err == GC_ERROR)
-                        goto stop;
-                else if (err == GC_NEXT)
+                if (err == GC_NEXT)
                         continue;
 
                 if (phase == 1) {
diff --git a/fs/f2fs/hash.c b/fs/f2fs/hash.c
index 5e48baca3597..6977415c52fc 100644
--- a/fs/f2fs/hash.c
+++ b/fs/f2fs/hash.c
@@ -71,7 +71,7 @@ static void str2hashbuf(const char *msg, int len, unsigned int *buf, int num)
 
 f2fs_hash_t f2fs_dentry_hash(const char *name, int len)
 {
-        __u32 hash, minor_hash;
+        __u32 hash;
         f2fs_hash_t f2fs_hash;
         const char *p;
         __u32 in[8], buf[4];
@@ -94,8 +94,6 @@ f2fs_hash_t f2fs_dentry_hash(const char *name, int len)
                 p += 16;
         }
         hash = buf[0];
-        minor_hash = buf[1];
-
         f2fs_hash = cpu_to_le32(hash & ~F2FS_HASH_COL_BIT);
         return f2fs_hash;
 }
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index e85643cc74a9..5066bfd256c9 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1088,7 +1088,6 @@ static int f2fs_write_node_page(struct page *page,
 {
         struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb);
         nid_t nid;
-        unsigned int nofs;
         block_t new_addr;
         struct node_info ni;
 
@@ -1105,7 +1104,6 @@ static int f2fs_write_node_page(struct page *page,
 
         /* get old block addr of this node page */
         nid = nid_of_node(page);
-        nofs = ofs_of_node(page);
         BUG_ON(page->index != nid);
 
         get_node_info(sbi, nid, &ni);
@@ -1566,7 +1564,7 @@ void flush_nat_entries(struct f2fs_sb_info *sbi)
                 nid_t nid;
                 struct f2fs_nat_entry raw_ne;
                 int offset = -1;
-                block_t old_blkaddr, new_blkaddr;
+                block_t new_blkaddr;
 
                 ne = list_entry(cur, struct nat_entry, list);
                 nid = nat_get_nid(ne);
@@ -1580,7 +1578,6 @@ void flush_nat_entries(struct f2fs_sb_info *sbi)
                 offset = lookup_journal_in_cursum(sum, NAT_JOURNAL, nid, 1);
                 if (offset >= 0) {
                         raw_ne = nat_in_journal(sum, offset);
-                        old_blkaddr = le32_to_cpu(raw_ne.block_addr);
                         goto flush_now;
                 }
 to_nat_page:
@@ -1602,7 +1599,6 @@ to_nat_page:
 
                 BUG_ON(!nat_blk);
                 raw_ne = nat_blk->entries[nid - start_nid];
-                old_blkaddr = le32_to_cpu(raw_ne.block_addr);
 flush_now:
                 new_blkaddr = nat_get_blkaddr(ne);