TAKE - get a few function calls out of the hot paths

[Steve Lord <lord@sgi.com>]

Kernel profiling was showing these paths up as hot spots, there was
some overhead we could get rid of here.

Date:  Tue Apr  3 10:32:55 PDT 2001
Workarea:  jen.americas.sgi.com:/src/lord/xfs-linux.2.4

The following file(s) were checked into:
  bonnie.engr.sgi.com:/isms/slinx/2.4.x-xfs


Modid:  2.4.x-xfs:slinx:91474a
linux/fs/xfs/xfs_btree.c - 1.88
linux/fs/xfs/xfs_btree.h - 1.51
linux/fs/xfs/linux/xfs_iops.c - 1.98
linux/fs/xfs/linux/xfs_ioctl.c - 1.33
	- Avoid a function call based on kernel profiling showing it up