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drbd: debugfs: add per volume oldest_requests

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 * 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>
This commit is contained in:
Lars Ellenberg 2014-05-08 13:39:35 +02:00 • committed by Philipp Reisner
parent 944410e97c
commit 54e6fc38e8
2 changed files with 160 additions and 14 deletions
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21
lib/lru_cache.c
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@ -643,9 +643,10 @@ void lc_set(struct lru_cache *lc, unsigned int enr, int index)
* 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 @@ void lc_seq_dump_details(struct seq_file *seq, struct lru_cache *lc, char *utext
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');
}
}