xfs: provide helper for counting extents from if_bytes
commit 5d829300bee000980a09ac2ccb761cb25867b67c upstream.
The open-coded pattern:
ifp->if_bytes / (uint)sizeof(xfs_bmbt_rec_t)
is all over the xfs code; provide a new helper
xfs_iext_count(ifp) to count the number of inline extents
in an inode fork.
[dchinner: pick up several missed conversions]
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/fs/xfs/xfs_reflink.c b/fs/xfs/xfs_reflink.c
index c069048..0edf835 100644
--- a/fs/xfs/xfs_reflink.c
+++ b/fs/xfs/xfs_reflink.c
@@ -486,7 +486,7 @@
/* This is the extent before; try sliding up one. */
if (irec.br_startoff < offset_fsb) {
idx++;
- if (idx >= ifp->if_bytes / sizeof(xfs_bmbt_rec_t))
+ if (idx >= xfs_iext_count(ifp))
return 0;
gotp = xfs_iext_get_ext(ifp, idx);
xfs_bmbt_get_all(gotp, &irec);
@@ -566,7 +566,7 @@
xfs_bmap_del_extent_cow(ip, &idx, &got, &del);
}
- if (++idx >= ifp->if_bytes / sizeof(struct xfs_bmbt_rec))
+ if (++idx >= xfs_iext_count(ifp))
break;
xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &got);
}