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dlm: limit rcom debug messages

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Unify the checking for both types of ignored
rcom messages, and replace the two log_debug
statements with a single, rate limited debug
message.

Signed-off-by: David Teigland <teigland@redhat.com>
This commit is contained in:
David Teigland 2012-04-23 13:58:42 -05:00
parent 13ef11110f
commit d6e24788d2
2 changed files with 31 additions and 31 deletions
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8
fs/dlm/dlm_internal.h
View file

@ -38,6 +38,7 @@
#include <linux/miscdevice.h>
#include <linux/mutex.h>
#include <linux/idr.h>
#include <linux/ratelimit.h>
#include <asm/uaccess.h>
#include <linux/dlm.h>
@ -74,6 +75,13 @@ do { \
(ls)->ls_name , ##args); \
} while (0)
#define log_limit(ls, fmt, args...) \
do { \
if (dlm_config.ci_log_debug) \
printk_ratelimited(KERN_DEBUG "dlm: %s: " fmt "\n", \
(ls)->ls_name , ##args); \
} while (0)
#define DLM_ASSERT(x, do) \
{ \
if (!(x)) \

54
fs/dlm/rcom.c
View file

@ -486,47 +486,39 @@ int dlm_send_ls_not_ready(int nodeid, struct dlm_rcom *rc_in)
return 0;
}
static int is_old_reply(struct dlm_ls *ls, struct dlm_rcom *rc)
{
uint64_t seq;
int rv = 0;
switch (rc->rc_type) {
case DLM_RCOM_STATUS_REPLY:
case DLM_RCOM_NAMES_REPLY:
case DLM_RCOM_LOOKUP_REPLY:
case DLM_RCOM_LOCK_REPLY:
spin_lock(&ls->ls_recover_lock);
seq = ls->ls_recover_seq;
spin_unlock(&ls->ls_recover_lock);
if (rc->rc_seq_reply != seq) {
log_debug(ls, "ignoring old reply %x from %d "
"seq_reply %llx expect %llx",
rc->rc_type, rc->rc_header.h_nodeid,
(unsigned long long)rc->rc_seq_reply,
(unsigned long long)seq);
rv = 1;
}
}
return rv;
}
/* Called by dlm_recv; corresponds to dlm_receive_message() but special
recovery-only comms are sent through here. */
void dlm_receive_rcom(struct dlm_ls *ls, struct dlm_rcom *rc, int nodeid)
{
int lock_size = sizeof(struct dlm_rcom) + sizeof(struct rcom_lock);
int stop, reply = 0;
uint64_t seq;
if (dlm_recovery_stopped(ls) && (rc->rc_type != DLM_RCOM_STATUS)) {
log_debug(ls, "ignoring recovery message %x from %d",
rc->rc_type, nodeid);
switch (rc->rc_type) {
case DLM_RCOM_STATUS_REPLY:
case DLM_RCOM_NAMES_REPLY:
case DLM_RCOM_LOOKUP_REPLY:
case DLM_RCOM_LOCK_REPLY:
reply = 1;
};
spin_lock(&ls->ls_recover_lock);
stop = test_bit(LSFL_RECOVERY_STOP, &ls->ls_flags);
seq = ls->ls_recover_seq;
spin_unlock(&ls->ls_recover_lock);
if ((stop && (rc->rc_type != DLM_RCOM_STATUS)) ||
(reply && (rc->rc_seq_reply != seq))) {
log_limit(ls, "dlm_receive_rcom ignore msg %d "
"from %d %llu %llu seq %llu",
rc->rc_type, nodeid,
(unsigned long long)rc->rc_seq,
(unsigned long long)rc->rc_seq_reply,
(unsigned long long)seq);
goto out;
}
if (is_old_reply(ls, rc))
goto out;
switch (rc->rc_type) {
case DLM_RCOM_STATUS:
receive_rcom_status(ls, rc);