[PATCH] xfs: simplify the calculation of tpp at xfs_bmdr_to_bmbt

[Hou Tao <houtao1@xxxxxxxxxx>]

remove the usage of rblocklen at xfs_bmdr_to_bmbt, and
use be16_to_cpu(dblock->bb_numrecs) instead. It also
reduces an extra calculation.

Signed-off-by: Hou Tao <houtao1@xxxxxxxxxx>
---
 fs/xfs/libxfs/xfs_bmap_btree.c | 5 ++---
 fs/xfs/libxfs/xfs_bmap_btree.h | 2 +-
 fs/xfs/libxfs/xfs_inode_fork.c | 2 +-
 3 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_bmap_btree.c b/fs/xfs/libxfs/xfs_bmap_btree.c
index 6282f6e..452cad9 100644
--- a/fs/xfs/libxfs/xfs_bmap_btree.c
+++ b/fs/xfs/libxfs/xfs_bmap_btree.c
@@ -59,8 +59,7 @@ xfs_bmdr_to_bmbt(
        struct xfs_inode        *ip,
        xfs_bmdr_block_t        *dblock,
        int                     dblocklen,
-       struct xfs_btree_block  *rblock,
-       int                     rblocklen)
+       struct xfs_btree_block  *rblock)
 {
        struct xfs_mount        *mp = ip->i_mount;
        int                     dmxr;
@@ -85,8 +84,8 @@ xfs_bmdr_to_bmbt(
        fkp = XFS_BMDR_KEY_ADDR(dblock, 1);
        tkp = XFS_BMBT_KEY_ADDR(mp, rblock, 1);
        fpp = XFS_BMDR_PTR_ADDR(dblock, 1, dmxr);
-       tpp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, rblocklen);
        dmxr = be16_to_cpu(dblock->bb_numrecs);
+       tpp = XFS_BMBT_PTR_ADDR(mp, rblock, 1, dmxr);
        memcpy(tkp, fkp, sizeof(*fkp) * dmxr);
        memcpy(tpp, fpp, sizeof(*fpp) * dmxr);
 }
diff --git a/fs/xfs/libxfs/xfs_bmap_btree.h b/fs/xfs/libxfs/xfs_bmap_btree.h
index 819a8a4..b1d30f7 100644
--- a/fs/xfs/libxfs/xfs_bmap_btree.h
+++ b/fs/xfs/libxfs/xfs_bmap_btree.h
@@ -105,7 +105,7 @@ struct xfs_trans;
  * Prototypes for xfs_bmap.c to call.
  */
 extern void xfs_bmdr_to_bmbt(struct xfs_inode *, xfs_bmdr_block_t *, int,
-                       struct xfs_btree_block *, int);
+                       struct xfs_btree_block *);
 extern void xfs_bmbt_get_all(xfs_bmbt_rec_host_t *r, xfs_bmbt_irec_t *s);
 extern xfs_filblks_t xfs_bmbt_get_blockcount(xfs_bmbt_rec_host_t *r);
 extern xfs_fsblock_t xfs_bmbt_get_startblock(xfs_bmbt_rec_host_t *r);
diff --git a/fs/xfs/libxfs/xfs_inode_fork.c b/fs/xfs/libxfs/xfs_inode_fork.c
index bbcc8c7..23967aa 100644
--- a/fs/xfs/libxfs/xfs_inode_fork.c
+++ b/fs/xfs/libxfs/xfs_inode_fork.c
@@ -433,7 +433,7 @@ xfs_iformat_btree(
         * to the in-memory structure.
         */
        xfs_bmdr_to_bmbt(ip, dfp, XFS_DFORK_SIZE(dip, ip->i_mount, whichfork),
-                        ifp->if_broot, size);
+                        ifp->if_broot);
        ifp->if_flags &= ~XFS_IFEXTENTS;
        ifp->if_flags |= XFS_IFBROOT;
 
-- 
2.5.5