Commit 08f4c42a authored by Ritesh Harjani's avatar Ritesh Harjani Committed by Theodore Ts'o
Browse files

ext4: add new trace event in ext4_fc_cleanup 



This adds a new trace event in ext4_fc_cleanup() which is helpful in debugging
some fast_commit issues.

Signed-off-by: default avatarRitesh Harjani <riteshh@linux.ibm.com>
Link: https://lore.kernel.org/r/794cdb1d5d3622f3f80d30c222ff6652ea68c375.1647057583.git.riteshh@linux.ibm.com


Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
parent 78be0471

fs/ext4/fast_commit.c

+1 −0
Original line number Diff line number Diff line
@@ -1280,6 +1280,7 @@ static void ext4_fc_cleanup(journal_t *journal, int full, tid_t tid) 
	if (full && sbi->s_fc_bh)

		sbi->s_fc_bh = NULL;



	trace_ext4_fc_cleanup(journal, full, tid);

	jbd2_fc_release_bufs(journal);



	spin_lock(&sbi->s_fc_lock);

include/trace/events/ext4.h

+26 −0
Original line number Diff line number Diff line
@@ -2863,6 +2863,32 @@ TRACE_EVENT(ext4_fc_track_range, 
		      __entry->end)

	);



TRACE_EVENT(ext4_fc_cleanup,

	TP_PROTO(journal_t *journal, int full, tid_t tid),



	TP_ARGS(journal, full, tid),



	TP_STRUCT__entry(

		__field(dev_t, dev)

		__field(int, j_fc_off)

		__field(int, full)

		__field(tid_t, tid)

	),



	TP_fast_assign(

		struct super_block *sb = journal->j_private;



		__entry->dev = sb->s_dev;

		__entry->j_fc_off = journal->j_fc_off;

		__entry->full = full;

		__entry->tid = tid;

	),



	TP_printk("dev %d,%d, j_fc_off %d, full %d, tid %u",

		  MAJOR(__entry->dev), MINOR(__entry->dev),

		  __entry->j_fc_off, __entry->full, __entry->tid)

	);



TRACE_EVENT(ext4_update_sb,

	TP_PROTO(struct super_block *sb, ext4_fsblk_t fsblk,

		 unsigned int flags),