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From: Kassey Li <quic_yingangl@quicinc.com>
To: <brauner@kernel.org>, <djwong@kernel.org>,
	<linux-fsdevel@vger.kernel.org>
Cc: <quic_yingangl@quicinc.com>
Subject: [PATCH] iomap: Add processed for iomap_iter
Date: Mon, 19 Feb 2024 10:11:38 +0800	[thread overview]
Message-ID: <20240219021138.3481763-1-quic_yingangl@quicinc.com> (raw)

processed: The number of bytes processed by the body in the
most recent  iteration, or a negative errno. 0 causes the iteration to
stop.

The processed is useful to check when the loop breaks.

Signed-off-by: Kassey Li <quic_yingangl@quicinc.com>
---
 fs/iomap/trace.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/fs/iomap/trace.h b/fs/iomap/trace.h
index c16fd55f5595..ff87ac58b6b7 100644
--- a/fs/iomap/trace.h
+++ b/fs/iomap/trace.h
@@ -165,6 +165,7 @@ TRACE_EVENT(iomap_iter,
 		__field(u64, ino)
 		__field(loff_t, pos)
 		__field(u64, length)
+		__field(s64, processed)
 		__field(unsigned int, flags)
 		__field(const void *, ops)
 		__field(unsigned long, caller)
@@ -174,15 +175,17 @@ TRACE_EVENT(iomap_iter,
 		__entry->ino = iter->inode->i_ino;
 		__entry->pos = iter->pos;
 		__entry->length = iomap_length(iter);
+		__entry->processed = iter->processed;
 		__entry->flags = iter->flags;
 		__entry->ops = ops;
 		__entry->caller = caller;
 	),
-	TP_printk("dev %d:%d ino 0x%llx pos 0x%llx length 0x%llx flags %s (0x%x) ops %ps caller %pS",
+	TP_printk("dev %d:%d ino 0x%llx pos 0x%llx length 0x%llx processed %lld flags %s (0x%x) ops %ps caller %pS",
 		  MAJOR(__entry->dev), MINOR(__entry->dev),
 		   __entry->ino,
 		   __entry->pos,
 		   __entry->length,
+		   __entry->processed,
 		   __print_flags(__entry->flags, "|", IOMAP_FLAGS_STRINGS),
 		   __entry->flags,
 		   __entry->ops,
-- 
2.25.1


             reply	other threads:[~2024-02-19  2:11 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-02-19  2:11 Kassey Li [this message]
2024-02-21  7:38 ` [PATCH] iomap: Add processed for iomap_iter Christian Brauner
2024-02-21 16:31 ` Darrick J. Wong
2024-02-22  9:22   ` Christian Brauner

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