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iomap: Add processed for iomap_iter

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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>
Link: https://lore.kernel.org/r/20240219021138.3481763-1-quic_yingangl@quicinc.com
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Kassey Li 2024-02-19 10:11:38 +08:00 committed by Christian Brauner
parent 54943abce0
commit dcd04ea587
1 changed files with 4 additions and 1 deletions
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5
fs/iomap/trace.h
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@ -206,6 +206,7 @@ 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)
@ -215,15 +216,17 @@ 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,