From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Record the whichfork number of the fork being operated on in iext
tracepoints. This makes it easier to trace our way through complex
remapping operations like copy on write.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/xfs/xfs_trace.h | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index cd87985..1c38b79 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -233,6 +233,7 @@ DECLARE_EVENT_CLASS(xfs_bmap_class,
__field(xfs_exntst_t, state)
__field(int, bmap_state)
__field(unsigned long, caller_ip)
+ __field(int, whichfork)
),
TP_fast_assign(
struct xfs_ifork *ifp;
@@ -250,11 +251,19 @@ DECLARE_EVENT_CLASS(xfs_bmap_class,
__entry->state = r.br_state;
__entry->bmap_state = state;
__entry->caller_ip = caller_ip;
- ),
- TP_printk("dev %d:%d ino 0x%llx state %s cur 0x%p/%d "
+ if (ifp == XFS_IFORK_PTR(ip, XFS_DATA_FORK))
+ __entry->whichfork = XFS_DATA_FORK;
+ else if (ifp == XFS_IFORK_PTR(ip, XFS_ATTR_FORK))
+ __entry->whichfork = XFS_ATTR_FORK;
+ else if (ifp == XFS_IFORK_PTR(ip, XFS_COW_FORK))
+ __entry->whichfork = XFS_COW_FORK;
+ else
+ __entry->whichfork = -1;
+ ),
+ TP_printk("dev %d:%d ino 0x%llx fork %d state %s cur 0x%p/%d "
"offset %lld block %lld count %lld flag %d caller %ps",
MAJOR(__entry->dev), MINOR(__entry->dev),
- __entry->ino,
+ __entry->ino, __entry->whichfork,
__print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS),
__entry->leaf,
__entry->pos,
--
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