xfs: simplify xfs_rtallocate_extent

We can deduce the allocation type from the bno argument, and do the
return without prod much simpler internally.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
[darrick: fix the macro for the non-rt build]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/fs/xfs/xfs_rtalloc.h b/fs/xfs/xfs_rtalloc.h
index 355dd9e..51dd3c7 100644
--- a/fs/xfs/xfs_rtalloc.h
+++ b/fs/xfs/xfs_rtalloc.h
@@ -40,7 +40,6 @@ xfs_rtallocate_extent(
 	xfs_extlen_t		minlen,	/* minimum length to allocate */
 	xfs_extlen_t		maxlen,	/* maximum length to allocate */
 	xfs_extlen_t		*len,	/* out: actual length allocated */
-	xfs_alloctype_t		type,	/* allocation type XFS_ALLOCTYPE... */
 	int			wasdel,	/* was a delayed allocation extent */
 	xfs_extlen_t		prod,	/* extent product factor */
 	xfs_rtblock_t		*rtblock); /* out: start block allocated */
@@ -122,7 +121,7 @@ int xfs_rtfree_range(struct xfs_mount *mp, struct xfs_trans *tp,
 
 
 #else
-# define xfs_rtallocate_extent(t,b,min,max,l,a,f,p,rb)  (ENOSYS)
+# define xfs_rtallocate_extent(t,b,min,max,l,f,p,rb)    (ENOSYS)
 # define xfs_rtfree_extent(t,b,l)                       (ENOSYS)
 # define xfs_rtpick_extent(m,t,l,rb)                    (ENOSYS)
 # define xfs_growfs_rt(mp,in)                           (ENOSYS)