drbd: debugfs: add per volume oldest_requests
Show oldest requests
* pending master bio completion and,
* if different, local disk bio completion.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
diff --git a/lib/lru_cache.c b/lib/lru_cache.c
index 6111cd1..852c81e 100644
--- a/lib/lru_cache.c
+++ b/lib/lru_cache.c
@@ -643,9 +643,10 @@
* lc_dump - Dump a complete LRU cache to seq in textual form.
* @lc: the lru cache to operate on
* @seq: the &struct seq_file pointer to seq_printf into
- * @utext: user supplied "heading" or other info
+ * @utext: user supplied additional "heading" or other info
* @detail: function pointer the user may provide to dump further details
- * of the object the lc_element is embedded in.
+ * of the object the lc_element is embedded in. May be NULL.
+ * Note: a leading space ' ' and trailing newline '\n' is implied.
*/
void lc_seq_dump_details(struct seq_file *seq, struct lru_cache *lc, char *utext,
void (*detail) (struct seq_file *, struct lc_element *))
@@ -654,16 +655,18 @@
struct lc_element *e;
int i;
- seq_printf(seq, "\tnn: lc_number refcnt %s\n ", utext);
+ seq_printf(seq, "\tnn: lc_number (new nr) refcnt %s\n ", utext);
for (i = 0; i < nr_elements; i++) {
e = lc_element_by_index(lc, i);
- if (e->lc_number == LC_FREE) {
- seq_printf(seq, "\t%2d: FREE\n", i);
- } else {
- seq_printf(seq, "\t%2d: %4u %4u ", i,
- e->lc_number, e->refcnt);
+ if (e->lc_number != e->lc_new_number)
+ seq_printf(seq, "\t%5d: %6d %8d %6d ",
+ i, e->lc_number, e->lc_new_number, e->refcnt);
+ else
+ seq_printf(seq, "\t%5d: %6d %-8s %6d ",
+ i, e->lc_number, "-\"-", e->refcnt);
+ if (detail)
detail(seq, e);
- }
+ seq_putc(seq, '\n');
}
}