[XFS] Remove m_nreadaheads

m_nreadaheads in the mount struct is never used; remove it and the various
macros assigned to it. Also remove a couple other unused macros in the
same areas.

Removes one user of xfs_physmem.

SGI-PV: 968563
SGI-Modid: xfs-linux-melb:xfs-kern:29322a

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

1 files changed, 0 insertions, 5 deletions

diff --git a/fs/xfs/linux-2.6/xfs_lrw.h b/fs/xfs/linux-2.6/xfs_lrw.h
index 7c60a1eed88b..1ad29bae5415 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.h
+++ b/fs/xfs/linux-2.6/xfs_lrw.h
@@ -71,11 +71,6 @@ extern void xfs_inval_cached_trace(struct xfs_iocore *,
 #define xfs_inval_cached_trace(io, offset, len, first, last)
 #endif
 
-/*
- * Maximum count of bmaps used by read and write paths.
- */
-#define XFS_MAX_RW_NBMAPS       4
-
 extern int xfs_bmap(struct bhv_desc *, xfs_off_t, ssize_t, int,
                         struct xfs_iomap *, int *);
 extern int xfsbdstrat(struct xfs_mount *, struct xfs_buf *);