[XFS] Remove the BPCSHIFT and NB* based macros from XFS.

The BPCSHIFT based macros, btoc*, ctob*, offtoc* and ctooff are either not
used or don't need to be used. The NDPP, NDPP, NBBY macros don't need to
be used but instead are replaced directly by PAGE_SIZE and PAGE_CACHE_SIZE
where appropriate. Initial patch and motivation from Nicolas Kaiser.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30096a

Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

1 files changed, 3 insertions, 6 deletions

diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 5322d9fb5321..7f380e885a6f 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -4164,15 +4164,12 @@ xfs_free_file_space(
                 vn_iowait(ip);  /* wait for the completion of any pending DIOs */
         }
 
-        rounding = max_t(uint, 1 << mp->m_sb.sb_blocklog, NBPP);
+        rounding = max_t(uint, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE);
         ioffset = offset & ~(rounding - 1);
 
         if (VN_CACHED(vp) != 0) {
-                xfs_inval_cached_trace(ip, ioffset, -1,
-                                ctooff(offtoct(ioffset)), -1);
-                error = xfs_flushinval_pages(ip,
-                                ctooff(offtoct(ioffset)),
-                                -1, FI_REMAPF_LOCKED);
+                xfs_inval_cached_trace(ip, ioffset, -1, ioffset, -1);
+                error = xfs_flushinval_pages(ip, ioffset, -1, FI_REMAPF_LOCKED);
                 if (error)
                         goto out_unlock_iolock;
         }