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ocfs2/dlm: Trace insert/remove of resource to/from hash 

Add mlog to trace adding and removing the resource from/to the hash table.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
This commit is contained in:
Sunil Mushran 2011-07-24 10:27:54 -07:00
parent 8d400b81cc
commit e9f0b6a623
3 changed files with 15 additions and 11 deletions
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5
fs/ocfs2/dlm/dlmcommon.h
View File

@ -877,9 +877,8 @@ static inline void dlm_lockres_get(struct dlm_lock_resource *res)
kref_get(&res->refs);
}
void dlm_lockres_put(struct dlm_lock_resource *res);
void __dlm_unhash_lockres(struct dlm_lock_resource *res);
void __dlm_insert_lockres(struct dlm_ctxt *dlm,
struct dlm_lock_resource *res);
void __dlm_unhash_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
void __dlm_insert_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
struct dlm_lock_resource * __dlm_lookup_lockres_full(struct dlm_ctxt *dlm,
const char *name,
unsigned int len,

19
fs/ocfs2/dlm/dlmdomain.c
View File

@ -157,16 +157,18 @@ static int dlm_protocol_compare(struct dlm_protocol_version *existing,
static void dlm_unregister_domain_handlers(struct dlm_ctxt *dlm);
void __dlm_unhash_lockres(struct dlm_lock_resource *lockres)
void __dlm_unhash_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
{
if (!hlist_unhashed(&lockres->hash_node)) {
hlist_del_init(&lockres->hash_node);
dlm_lockres_put(lockres);
}
if (hlist_unhashed(&res->hash_node))
return;
mlog(0, "%s: Unhash res %.*s\n", dlm->name, res->lockname.len,
res->lockname.name);
hlist_del_init(&res->hash_node);
dlm_lockres_put(res);
}
void __dlm_insert_lockres(struct dlm_ctxt *dlm,
struct dlm_lock_resource *res)
void __dlm_insert_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res)
{
struct hlist_head *bucket;
struct qstr *q;
@ -180,6 +182,9 @@ void __dlm_insert_lockres(struct dlm_ctxt *dlm,
dlm_lockres_get(res);
hlist_add_head(&res->hash_node, bucket);
mlog(0, "%s: Hash res %.*s\n", dlm->name, res->lockname.len,
res->lockname.name);
}
struct dlm_lock_resource * __dlm_lookup_lockres_full(struct dlm_ctxt *dlm,

2
fs/ocfs2/dlm/dlmthread.c
View File

@ -207,7 +207,7 @@ static void dlm_purge_lockres(struct dlm_ctxt *dlm,
BUG();
}
__dlm_unhash_lockres(res);
__dlm_unhash_lockres(dlm, res);
/* lockres is not in the hash now. drop the flag and wake up
* any processes waiting in dlm_get_lock_resource. */