[XFS] Undo bit ops cleanup mod due to regression on 32-bit powermac

platform.

SGI-PV: 971186
SGI-Modid: xfs-linux-melb:xfs-kern:30559a

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

1 files changed, 12 insertions, 7 deletions

diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index ca83ddf72af4..47082c01872d 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -73,6 +73,18 @@ STATIC int xfs_rtmodify_summary(xfs_mount_t *, xfs_trans_t *, int,
  */
 
 /*
+ * xfs_lowbit32: get low bit set out of 32-bit argument, -1 if none set.
+ */
+STATIC int
+xfs_lowbit32(
+        __uint32_t      v)
+{
+        if (v)
+                return ffs(v) - 1;
+        return -1;
+}
+
+/*
  * Allocate space to the bitmap or summary file, and zero it, for growfs.
  */
 STATIC int                              /* error */
@@ -432,7 +444,6 @@ xfs_rtallocate_extent_near(
         }
         bbno = XFS_BITTOBLOCK(mp, bno);
         i = 0;
-        ASSERT(minlen != 0);
         log2len = xfs_highbit32(minlen);
         /*
          * Loop over all bitmap blocks (bbno + i is current block).
@@ -601,8 +612,6 @@ xfs_rtallocate_extent_size(
         xfs_suminfo_t   sum;            /* summary information for extents */
 
         ASSERT(minlen % prod == 0 && maxlen % prod == 0);
-        ASSERT(maxlen != 0);
-
         /*
          * Loop over all the levels starting with maxlen.
          * At each level, look at all the bitmap blocks, to see if there
@@ -660,9 +669,6 @@ xfs_rtallocate_extent_size(
                 *rtblock = NULLRTBLOCK;
                 return 0;
         }
-        ASSERT(minlen != 0);
-        ASSERT(maxlen != 0);
-
         /*
          * Loop over sizes, from maxlen down to minlen.
          * This time, when we do the allocations, allow smaller ones
@@ -1948,7 +1954,6 @@ xfs_growfs_rt(
                                   nsbp->sb_blocksize * nsbp->sb_rextsize);
                 nsbp->sb_rextents = nsbp->sb_rblocks;
                 do_div(nsbp->sb_rextents, nsbp->sb_rextsize);
-                ASSERT(nsbp->sb_rextents != 0);
                 nsbp->sb_rextslog = xfs_highbit32(nsbp->sb_rextents);
                 nrsumlevels = nmp->m_rsumlevels = nsbp->sb_rextslog + 1;
                 nrsumsize =