xfs: more do_div cleanups

Source kernel commit: 4f1adf3373f072246c14119b2aa6dfb4d6510a43

On some architectures do_div does the pointer compare
trick to make sure that we've sent it an unsigned 64-bit
number.  (Why unsigned?  I don't know.)

Fix up the few places that squawk about this; in
xfs_bmap_wants_extents() we just used a bare int64_t so change
that to unsigned.

In xfs_adjust_extent_unmap_boundaries() all we wanted was the
mod, and we have an xfs-specific function to handle that w/o
side effects, which includes proper casting for do_div.

In xfs_daddr_to_ag[b]no, we were using the wrong type anyway;
XFS_BB_TO_FSBT returns a block in the filesystem, so use
xfs_rfsblock_t not xfs_daddr_t, and gain the unsignedness
from that type as a bonus.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>

diff --git a/libxfs/xfs_bmap.c b/libxfs/xfs_bmap.c
index 61a9f72daf77fbb72325f5f571de6dd2b757d825..5f9e68e5d7358c52cacdc20d7ebe7449501a6f47 100644 (file)
--- a/libxfs/xfs_bmap.c
+++ b/libxfs/xfs_bmap.c
@@ -4878,7 +4878,7 @@ xfs_bmap_del_extent_delay(
        ASSERT(got_endoff >= del_endoff);
 
        if (isrt) {
-               int64_t rtexts = XFS_FSB_TO_B(mp, del->br_blockcount);
+               uint64_t rtexts = XFS_FSB_TO_B(mp, del->br_blockcount);
 
                do_div(rtexts, mp->m_sb.sb_rextsize);
                xfs_mod_frextents(mp, rtexts);