xfs: pass state not whichfork to trace_xfs_extlist

When xfs_bmap_trace_exlist called trace_xfs_extlist,
it sent in the "whichfork" var instead of the bmap "state"
as expected (even though state was already set up for this
purpose).

As a result, the xfs_bmap_class in tracing code used
"whichfork" not state in xfs_iext_state_to_fork(), and got
the wrong ifork pointer.  It all goes downhill from
there, including an ASSERT when ifp_bytes is empty
by the time it reaches xfs_iext_get_ext():

XFS: Assertion failed: idx < ifp->if_bytes / sizeof(xfs_bmbt_rec_t)

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c
index 6b7e6eb294145392c0d84b98ffe65a3da4d78ba6..e4120fcefcc893a44a6c6bd2014fe7bde61a0d8c 100644 (file)
--- a/fs/xfs/libxfs/xfs_bmap.c
+++ b/fs/xfs/libxfs/xfs_bmap.c
@@ -531,7 +531,7 @@ xfs_bmap_trace_exlist(
        ifp = XFS_IFORK_PTR(ip, whichfork);
        ASSERT(cnt == xfs_iext_count(ifp));
        for (idx = 0; idx < cnt; idx++)
-               trace_xfs_extlist(ip, idx, whichfork, caller_ip);
+               trace_xfs_extlist(ip, idx, state, caller_ip);
 }
 
 /*