linux-kernel - [PATCH 2/5] bcachefs: bch2_read_bio_to

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Message-ID: <20250421172607.1781982-3-kent.overstreet@linux.dev>
Date: Mon, 21 Apr 2025 13:26:02 -0400
From: Kent Overstreet <kent.overstreet@...ux.dev>
To: linux-bcachefs@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Kent Overstreet <kent.overstreet@...ux.dev>
Subject: [PATCH 2/5] bcachefs: bch2_read_bio_to_text

Pretty printer for struct bch_read_bio.

Signed-off-by: Kent Overstreet <kent.overstreet@...ux.dev>
---
 fs/bcachefs/data_update.c | 18 +++++++++++++++---
 fs/bcachefs/io_read.c     | 35 +++++++++++++++++++++++++++++++++++
 fs/bcachefs/io_read.h     |  2 ++
 3 files changed, 52 insertions(+), 3 deletions(-)

diff --git a/fs/bcachefs/data_update.c b/fs/bcachefs/data_update.c
index c3034338f9e4..9b44f11fb0d9 100644
--- a/fs/bcachefs/data_update.c
+++ b/fs/bcachefs/data_update.c
@@ -587,6 +587,10 @@ void bch2_data_update_opts_to_text(struct printbuf *out, struct bch_fs *c,
 
 	prt_str_indented(out, "extra replicas:\t");
 	prt_u64(out, data_opts->extra_replicas);
+	prt_newline(out);
+
+	prt_str_indented(out, "scrub:\t");
+	prt_u64(out, data_opts->scrub);
 }
 
 void bch2_data_update_to_text(struct printbuf *out, struct data_update *m)
@@ -607,9 +611,17 @@ void bch2_data_update_inflight_to_text(struct printbuf *out, struct data_update
 	prt_newline(out);
 	printbuf_indent_add(out, 2);
 	bch2_data_update_opts_to_text(out, m->op.c, &m->op.opts, &m->data_opts);
-	prt_printf(out, "read_done:\t%u\n", m->read_done);
-	bch2_write_op_to_text(out, &m->op);
-	printbuf_indent_sub(out, 2);
+
+	if (!m->read_done) {
+		prt_printf(out, "read:\n");
+		printbuf_indent_add(out, 2);
+		bch2_read_bio_to_text(out, &m->rbio);
+	} else {
+		prt_printf(out, "write:\n");
+		printbuf_indent_add(out, 2);
+		bch2_write_op_to_text(out, &m->op);
+	}
+	printbuf_indent_sub(out, 4);
 }
 
 int bch2_extent_drop_ptrs(struct btree_trans *trans,
diff --git a/fs/bcachefs/io_read.c b/fs/bcachefs/io_read.c
index 92952799961c..acec8ddf7081 100644
--- a/fs/bcachefs/io_read.c
+++ b/fs/bcachefs/io_read.c
@@ -1482,6 +1482,41 @@ int __bch2_read(struct btree_trans *trans, struct bch_read_bio *rbio,
 	return ret;
 }
 
+static const char * const bch2_read_bio_flags[] = {
+#define x(n)	#n,
+	BCH_READ_FLAGS()
+#undef x
+	NULL
+};
+
+void bch2_read_bio_to_text(struct printbuf *out, struct bch_read_bio *rbio)
+{
+	u64 now = local_clock();
+	prt_printf(out, "start_time:\t%llu\n", rbio->start_time ? now - rbio->start_time : 0);
+	prt_printf(out, "submit_time:\t%llu\n", rbio->submit_time ? now - rbio->submit_time : 0);
+
+	if (!rbio->split)
+		prt_printf(out, "end_io:\t%ps\n", rbio->end_io);
+	else
+		prt_printf(out, "parent:\t%px\n", rbio->parent);
+
+	prt_printf(out, "bi_end_io:\t%ps\n", rbio->bio.bi_end_io);
+
+	prt_printf(out, "promote:\t%u\n",	rbio->promote);
+	prt_printf(out, "bounce:\t%u\n",	rbio->bounce);
+	prt_printf(out, "split:\t%u\n",		rbio->split);
+	prt_printf(out, "have_ioref:\t%u\n",	rbio->have_ioref);
+	prt_printf(out, "narrow_crcs:\t%u\n",	rbio->narrow_crcs);
+	prt_printf(out, "context:\t%u\n",	rbio->context);
+	prt_printf(out, "ret:\t%s\n",		bch2_err_str(rbio->ret));
+
+	prt_printf(out, "flags:\t");
+	bch2_prt_bitflags(out, bch2_read_bio_flags, rbio->flags);
+	prt_newline(out);
+
+	bch2_bio_to_text(out, &rbio->bio);
+}
+
 void bch2_fs_io_read_exit(struct bch_fs *c)
 {
 	if (c->promote_table.tbl)
diff --git a/fs/bcachefs/io_read.h b/fs/bcachefs/io_read.h
index 1a85b092fd1d..13bb68eb91c4 100644
--- a/fs/bcachefs/io_read.h
+++ b/fs/bcachefs/io_read.h
@@ -193,6 +193,8 @@ static inline struct bch_read_bio *rbio_init(struct bio *bio,
 	return rbio;
 }
 
+void bch2_read_bio_to_text(struct printbuf *, struct bch_read_bio *);
+
 void bch2_fs_io_read_exit(struct bch_fs *);
 int bch2_fs_io_read_init(struct bch_fs *);
 
-- 
2.49.0