xfs: pass the iunlink item to the xfs_iunlink_update_dinode trace point

So that decoding is only done when tracing is actually enabled and the
call site look a lot neater.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>

Author: Christoph Hellwig

fs/xfs/xfs_iunlink_item.c

@@ -52,14 +52,14 @@ xfs_iunlink_log_dinode(
 	struct xfs_trans	*tp,
 	struct xfs_iunlink_item	*iup)
 {
-	struct xfs_mount	*mp = tp->t_mountp;
 	struct xfs_inode	*ip = iup->ip;
 	struct xfs_dinode	*dip;
 	struct xfs_buf		*ibp;
+	xfs_agino_t		old_ptr;
 	int			offset;
 	int			error;
 
-	error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &ibp);
+	error = xfs_imap_to_bp(tp->t_mountp, tp, &ip->i_imap, &ibp);
 	if (error)
 		return error;
 	/*
@@ -73,22 +73,21 @@ xfs_iunlink_log_dinode(
 	dip = xfs_buf_offset(ibp, ip->i_imap.im_boffset);
 
 	/* Make sure the old pointer isn't garbage. */
-	if (be32_to_cpu(dip->di_next_unlinked) != iup->old_agino) {
+	old_ptr = be32_to_cpu(dip->di_next_unlinked);
+	if (old_ptr != iup->old_agino) {
 		xfs_inode_verifier_error(ip, -EFSCORRUPTED, __func__, dip,
 				sizeof(*dip), __this_address);
 		error = -EFSCORRUPTED;
 		goto out;
 	}
 
-	trace_xfs_iunlink_update_dinode(mp, iup->pag->pag_agno,
-			XFS_INO_TO_AGINO(mp, ip->i_ino),
-			be32_to_cpu(dip->di_next_unlinked), iup->next_agino);
+	trace_xfs_iunlink_update_dinode(iup, old_ptr);
 
 	dip->di_next_unlinked = cpu_to_be32(iup->next_agino);
 	offset = ip->i_imap.im_boffset +
 			offsetof(struct xfs_dinode, di_next_unlinked);
 
-	xfs_dinode_calc_crc(mp, dip);
+	xfs_dinode_calc_crc(tp->t_mountp, dip);
 	xfs_trans_inode_buf(tp, ibp);
 	xfs_trans_log_buf(tp, ibp, offset, offset + sizeof(xfs_agino_t) - 1);
 	return 0;

fs/xfs/xfs_trace.c

@@ -32,6 +32,7 @@
 #include "xfs_fsmap.h"
 #include "xfs_btree_staging.h"
 #include "xfs_icache.h"
+#include "xfs_iunlink_item.h"
 #include "xfs_ag.h"
 #include "xfs_ag_resv.h"
 #include "xfs_error.h"

fs/xfs/xfs_trace.h

@@ -74,6 +74,7 @@ struct xfs_refcount_irec;
 struct xfs_fsmap;
 struct xfs_rmap_irec;
 struct xfs_icreate_log;
+struct xfs_iunlink_item;
 struct xfs_owner_info;
 struct xfs_trans_res;
 struct xfs_inobt_rec_incore;
@@ -4055,9 +4056,8 @@ TRACE_EVENT(xfs_iunlink_update_bucket,
 );
 
 TRACE_EVENT(xfs_iunlink_update_dinode,
-	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agino_t agino,
-		 xfs_agino_t old_ptr, xfs_agino_t new_ptr),
-	TP_ARGS(mp, agno, agino, old_ptr, new_ptr),
+	TP_PROTO(const struct xfs_iunlink_item *iup, xfs_agino_t old_ptr),
+	TP_ARGS(iup, old_ptr),
 	TP_STRUCT__entry(
 		__field(dev_t, dev)
 		__field(xfs_agnumber_t, agno)
@@ -4066,11 +4066,12 @@ TRACE_EVENT(xfs_iunlink_update_dinode,
 		__field(xfs_agino_t, new_ptr)
 	),
 	TP_fast_assign(
-		__entry->dev = mp->m_super->s_dev;
-		__entry->agno = agno;
-		__entry->agino = agino;
+		__entry->dev = iup->pag->pag_mount->m_super->s_dev;
+		__entry->agno = iup->pag->pag_agno;
+		__entry->agino =
+			XFS_INO_TO_AGINO(iup->ip->i_mount, iup->ip->i_ino);
 		__entry->old_ptr = old_ptr;
-		__entry->new_ptr = new_ptr;
+		__entry->new_ptr = iup->next_agino;
 	),
 	TP_printk("dev %d:%d agno 0x%x agino 0x%x old 0x%x new 0x%x",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),