netfs: Update tracepoints in a number of ways

Make a number of updates to the netfs tracepoints:

 (1) Remove a duplicate trace from netfs_unbuffered_write_iter_locked().

 (2) Move the trace in netfs_wake_rreq_flag() to after the flag is cleared
     so that the change appears in the trace.

 (3) Differentiate the use of netfs_rreq_trace_wait/woke_queue symbols.

 (4) Don't do so many trace emissions in the wait functions as some of them
     are redundant.

 (5) In netfs_collect_read_results(), differentiate a subreq that's being
     abandoned vs one that has been consumed in a regular way.

 (6) Add a tracepoint to indicate the call to ->ki_complete().

 (7) Don't double-increment the subreq_counter when retrying a write.

 (8) Move the netfs_sreq_trace_io_progress tracepoint within cifs code to
     just MID_RESPONSE_RECEIVED and add different tracepoints for other MID
     states and note check failure.

Signed-off-by: David Howells <[email protected]>
Co-developed-by: Paulo Alcantara <[email protected]>
Signed-off-by: Paulo Alcantara <[email protected]>
Link: https://lore.kernel.org/[email protected]
cc: Steve French <[email protected]>
cc: [email protected]
cc: [email protected]
cc: [email protected]
Signed-off-by: Christian Brauner <[email protected]>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/netfs/write_collect.c b/fs/netfs/write_collect.c
index 33a93258f36e..0f3a36852a4d 100644
--- a/fs/netfs/write_collect.c
+++ b/fs/netfs/write_collect.c
@@ -421,9 +421,11 @@ bool netfs_write_collection(struct netfs_io_request *wreq)
 	if (wreq->iocb) {
 		size_t written = min(wreq->transferred, wreq->len);
 		wreq->iocb->ki_pos += written;
-		if (wreq->iocb->ki_complete)
+		if (wreq->iocb->ki_complete) {
+			trace_netfs_rreq(wreq, netfs_rreq_trace_ki_complete);
 			wreq->iocb->ki_complete(
 				wreq->iocb, wreq->error ? wreq->error : written);
+		}
 		wreq->iocb = VFS_PTR_POISON;
 	}