GFS2: Log the reason for log flushes in every log header
This patch just adds the capability for GFS2 to track which function
called gfs2_log_flush. This should make it easier to diagnose
problems based on the sequence of events found in the journals.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
diff --git a/fs/gfs2/trace_gfs2.h b/fs/gfs2/trace_gfs2.h
index f67a709..b9318b4 100644
--- a/fs/gfs2/trace_gfs2.h
+++ b/fs/gfs2/trace_gfs2.h
@@ -353,26 +353,29 @@ TRACE_EVENT(gfs2_pin,
/* Flushing the log */
TRACE_EVENT(gfs2_log_flush,
- TP_PROTO(const struct gfs2_sbd *sdp, int start),
+ TP_PROTO(const struct gfs2_sbd *sdp, int start, u32 flags),
- TP_ARGS(sdp, start),
+ TP_ARGS(sdp, start, flags),
TP_STRUCT__entry(
__field( dev_t, dev )
__field( int, start )
__field( u64, log_seq )
+ __field( u32, flags )
),
TP_fast_assign(
__entry->dev = sdp->sd_vfs->s_dev;
__entry->start = start;
__entry->log_seq = sdp->sd_log_sequence;
+ __entry->flags = flags;
),
- TP_printk("%u,%u log flush %s %llu",
+ TP_printk("%u,%u log flush %s %llu %llx",
MAJOR(__entry->dev), MINOR(__entry->dev),
__entry->start ? "start" : "end",
- (unsigned long long)__entry->log_seq)
+ (unsigned long long)__entry->log_seq,
+ (unsigned long long)__entry->flags)
);
/* Reserving/releasing blocks in the log */
