Hi Andrew,

Today's linux-next merge of the akpm tree got conflicts in
fs/btrfs/inode.c and fs/btrfs/volumes.c between commit 9be3395bcd4a
("Btrfs: use a btrfs bioset instead of abusing bio internals") from
Linus' tree and commit "block: prep work for batch completion" from the
akpm tree.

I fixed it up (I think - see below) and can carry the fix as necessary
(no action is required).

I also noticed that a single conversion of bio_endio to bio_endio_batch
is done in the akpm patch but bio_endio_batch is not introduced until a
later patch ... :-(

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

diff --cc fs/btrfs/inode.c
index af978f7,551c8bd..0000000
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@@ -6932,14 -6928,11 +6932,15 @@@ struct btrfs_dio_private 
  	/* IO errors */
  	int errors;
  
 +	/* orig_bio is our btrfs_io_bio */
  	struct bio *orig_bio;
 +
 +	/* dio_bio came from fs/direct-io.c */
 +	struct bio *dio_bio;
  };
  
- static void btrfs_endio_direct_read(struct bio *bio, int err)
+ static void btrfs_endio_direct_read(struct bio *bio, int err,
+ 				    struct batch_complete *batch)
  {
  	struct btrfs_dio_private *dip = bio->bi_private;
  	struct bio_vec *bvec_end = bio->bi_io_vec + bio->bi_vcnt - 1;
@@@ -6992,12 -6984,12 +6993,13 @@@ failed
  
  	/* If we had a csum failure make sure to clear the uptodate flag */
  	if (err)
 -		clear_bit(BIO_UPTODATE, &bio->bi_flags);
 -	dio_end_io(bio, err, batch);
 +		clear_bit(BIO_UPTODATE, &dio_bio->bi_flags);
- 	dio_end_io(dio_bio, err);
++	dio_end_io(dio_bio, err, batch);
 +	bio_put(bio);
  }
  
- static void btrfs_endio_direct_write(struct bio *bio, int err)
+ static void btrfs_endio_direct_write(struct bio *bio, int err,
+ 				     struct batch_complete *batch)
  {
  	struct btrfs_dio_private *dip = bio->bi_private;
  	struct inode *inode = dip->inode;
@@@ -7039,9 -7030,8 +7041,9 @@@ out_done
  
  	/* If we had an error make sure to clear the uptodate flag */
  	if (err)
 -		clear_bit(BIO_UPTODATE, &bio->bi_flags);
 -	dio_end_io(bio, err, batch);
 +		clear_bit(BIO_UPTODATE, &dio_bio->bi_flags);
- 	dio_end_io(dio_bio, err);
++	dio_end_io(dio_bio, err, batch);
 +	bio_put(bio);
  }
  
  static int __btrfs_submit_bio_start_direct_io(struct inode *inode, int rw,
diff --cc fs/btrfs/volumes.c
index 8bffb91,7299b55..0000000
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@@ -5018,9 -5019,35 +5018,10 @@@ int btrfs_rmap_block(struct btrfs_mappi
  	return 0;
  }
  
- static void btrfs_end_bio(struct bio *bio, int err)
 -static void *merge_stripe_index_into_bio_private(void *bi_private,
 -						 unsigned int stripe_index)
 -{
 -	/*
 -	 * with single, dup, RAID0, RAID1 and RAID10, stripe_index is
 -	 * at most 1.
 -	 * The alternative solution (instead of stealing bits from the
 -	 * pointer) would be to allocate an intermediate structure
 -	 * that contains the old private pointer plus the stripe_index.
 -	 */
 -	BUG_ON((((uintptr_t)bi_private) & 3) != 0);
 -	BUG_ON(stripe_index > 3);
 -	return (void *)(((uintptr_t)bi_private) | stripe_index);
 -}
 -
 -static struct btrfs_bio *extract_bbio_from_bio_private(void *bi_private)
 -{
 -	return (struct btrfs_bio *)(((uintptr_t)bi_private) & ~((uintptr_t)3));
 -}
 -
 -static unsigned int extract_stripe_index_from_bio_private(void *bi_private)
 -{
 -	return (unsigned int)((uintptr_t)bi_private) & 3;
 -}
 -
+ static void btrfs_end_bio(struct bio *bio, int err,
+ 			  struct batch_complete *batch)
  {
 -	struct btrfs_bio *bbio = extract_bbio_from_bio_private(bio->bi_private);
 +	struct btrfs_bio *bbio = bio->bi_private;
  	int is_orig_bio = 0;
  
  	if (err) {