jfs: clean up some compiler warnings

jfs has a few variables being set but never used.
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>

fs/jfs/jfs_dmap.c

@@ -3161,7 +3161,7 @@ static int dbAllocDmapBU(struct bmap * bmp, struct dmap * dp, s64 blkno,
 {
 	int rc;
 	int dbitno, word, rembits, nb, nwords, wbitno, agno;
-	s8 oldroot, *leaf;
+	s8 oldroot;
 	struct dmaptree *tp = (struct dmaptree *) & dp->tree;
 
 	/* save the current value of the root (i.e. maximum free string)
@@ -3169,9 +3169,6 @@ static int dbAllocDmapBU(struct bmap * bmp, struct dmap * dp, s64 blkno,
 	 */
 	oldroot = tp->stree[ROOT];
 
-	/* pick up a pointer to the leaves of the dmap tree */
-	leaf = tp->stree + LEAFIND;
-
 	/* determine the bit number and word within the dmap of the
 	 * starting block.
 	 */

fs/jfs/jfs_txnmgr.c

@@ -1143,7 +1143,6 @@ int txCommit(tid_t tid,		/* transaction identifier */
 	struct jfs_log *log;
 	struct tblock *tblk;
 	struct lrd *lrd;
-	int lsn;
 	struct inode *ip;
 	struct jfs_inode_info *jfs_ip;
 	int k, n;
@@ -1310,7 +1309,7 @@ int txCommit(tid_t tid,		/* transaction identifier */
 	 */
 	lrd->type = cpu_to_le16(LOG_COMMIT);
 	lrd->length = 0;
-	lsn = lmLog(log, tblk, lrd, NULL);
+	lmLog(log, tblk, lrd, NULL);
 
 	lmGroupCommit(log, tblk);
 
@@ -2935,7 +2934,6 @@ int jfs_sync(void *arg)
 {
 	struct inode *ip;
 	struct jfs_inode_info *jfs_ip;
-	int rc;
 	tid_t tid;
 
 	do {
@@ -2961,7 +2959,7 @@ int jfs_sync(void *arg)
 				 */
 				TXN_UNLOCK();
 				tid = txBegin(ip->i_sb, COMMIT_INODE);
-				rc = txCommit(tid, 1, &ip, 0);
+				txCommit(tid, 1, &ip, 0);
 				txEnd(tid);
 				mutex_unlock(&jfs_ip->commit_mutex);
 

fs/jfs/namei.c

@@ -893,7 +893,7 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry,
 	unchar *i_fastsymlink;
 	s64 xlen = 0;
 	int bmask = 0, xsize;
-	s64 extent = 0, xaddr;
+	s64 xaddr;
 	struct metapage *mp;
 	struct super_block *sb;
 	struct tblock *tblk;
@@ -993,7 +993,6 @@ static int jfs_symlink(struct inode *dip, struct dentry *dentry,
 			txAbort(tid, 0);
 			goto out3;
 		}
-		extent = xaddr;
 		ip->i_size = ssize - 1;
 		while (ssize) {
 			/* This is kind of silly since PATH_MAX == 4K */