xfs: uncached buffer tracing needs to print bno
Useless:
xfs_buf_get_uncached: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
xfs_buf_unlock: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
xfs_buf_submit: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
xfs_buf_hold: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
xfs_buf_iowait: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
xfs_buf_iodone: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
xfs_buf_iowait_done: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
xfs_buf_rele: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
Useful:
xfs_buf_get_uncached: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
xfs_buf_unlock: dev 253:32 bno 0xffffffffffffffff nblks 0x1 ...
xfs_buf_submit: dev 253:32 bno 0x200b5 nblks 0x1 ...
xfs_buf_hold: dev 253:32 bno 0x200b5 nblks 0x1 ...
xfs_buf_iowait: dev 253:32 bno 0x200b5 nblks 0x1 ...
xfs_buf_iodone: dev 253:32 bno 0x200b5 nblks 0x1 ...
xfs_buf_iowait_done: dev 253:32 bno 0x200b5 nblks 0x1 ...
xfs_buf_rele: dev 253:32 bno 0x200b5 nblks 0x1 ...
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 3043e5e..8a6532a 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -280,7 +280,10 @@ DECLARE_EVENT_CLASS(xfs_buf_class,
),
TP_fast_assign(
__entry->dev = bp->b_target->bt_dev;
- __entry->bno = bp->b_bn;
+ if (bp->b_bn == XFS_BUF_DADDR_NULL)
+ __entry->bno = bp->b_maps[0].bm_bn;
+ else
+ __entry->bno = bp->b_bn;
__entry->nblks = bp->b_length;
__entry->hold = atomic_read(&bp->b_hold);
__entry->pincount = atomic_read(&bp->b_pin_count);