Fix up more bio fallout

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/gfs2/super.c

@@ -169,7 +169,6 @@ static void end_bio_io_page(struct bio *bio, int error)
 	else
 		printk(KERN_WARNING "gfs2: error %d reading superblock\n", error);
 	unlock_page(page);
-	return 0;
 }
 
 static void gfs2_sb_in(struct gfs2_sb_host *sb, const void *buf)

fs/jfs/jfs_metapage.c

@@ -291,8 +291,6 @@ static void metapage_read_end_io(struct bio *bio, int err)
 
 	dec_io(page, last_read_complete);
 	bio_put(bio);
-
-	return 0;
 }
 
 static void remove_from_logsync(struct metapage *mp)
@@ -349,7 +347,6 @@ static void metapage_write_end_io(struct bio *bio, int err)
 	}
 	dec_io(page, last_write_complete);
 	bio_put(bio);
-	return 0;
 }
 
 static int metapage_writepage(struct page *page, struct writeback_control *wbc)

fs/ocfs2/cluster/heartbeat.c

@@ -216,7 +216,7 @@ static void o2hb_wait_on_io(struct o2hb_region *reg,
 	wait_for_completion(&wc->wc_io_complete);
 }
 
-static int o2hb_bio_end_io(struct bio *bio,
+static void o2hb_bio_end_io(struct bio *bio,
 			   int error)
 {
 	struct o2hb_bio_wait_ctxt *wc = bio->bi_private;
@@ -228,7 +228,6 @@ static int o2hb_bio_end_io(struct bio *bio,
 
 	o2hb_bio_wait_dec(wc, 1);
 	bio_put(bio);
-	return 0;
 }
 
 /* Setup a Bio to cover I/O against num_slots slots starting at

fs/xfs/linux-2.6/xfs_aops.c

@@ -323,7 +323,7 @@ xfs_iomap_valid(
 /*
  * BIO completion handler for buffered IO.
  */
-STATIC int
+STATIC void
 xfs_end_bio(
 	struct bio		*bio,
 	int			error)
@@ -339,7 +339,6 @@ xfs_end_bio(
 	bio_put(bio);
 
 	xfs_finish_ioend(ioend, 0);
-	return 0;
 }
 
 STATIC void

fs/xfs/linux-2.6/xfs_buf.c

@@ -1103,7 +1103,7 @@ _xfs_buf_ioend(
 	}
 }
 
-STATIC int
+STATIC void
 xfs_buf_bio_end_io(
 	struct bio		*bio,
 	int			error)
@@ -1139,7 +1139,6 @@ xfs_buf_bio_end_io(
 
 	_xfs_buf_ioend(bp, 1);
 	bio_put(bio);
-	return 0;
 }
 
 STATIC void