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-rw-r--r--fs/ocfs2/dlm/dlmcommon.h12
-rw-r--r--fs/ocfs2/dlm/dlmdebug.c2
-rw-r--r--fs/ocfs2/dlm/dlmdomain.c41
-rw-r--r--fs/ocfs2/dlm/dlmrecovery.c4
4 files changed, 46 insertions, 13 deletions
diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index 87612819c13..0378ddbc8a8 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -37,7 +37,10 @@
#define DLM_THREAD_SHUFFLE_INTERVAL 5 // flush everything every 5 passes
#define DLM_THREAD_MS 200 // flush at least every 200 ms
-#define DLM_HASH_BUCKETS (PAGE_SIZE / sizeof(struct hlist_head))
+#define DLM_HASH_SIZE (1 << 14)
+#define DLM_HASH_PAGES (DLM_HASH_SIZE / PAGE_SIZE)
+#define DLM_BUCKETS_PER_PAGE (PAGE_SIZE / sizeof(struct hlist_head))
+#define DLM_HASH_BUCKETS (DLM_HASH_PAGES * DLM_BUCKETS_PER_PAGE)
/* Intended to make it easier for us to switch out hash functions */
#define dlm_lockid_hash(_n, _l) full_name_hash(_n, _l)
@@ -88,7 +91,7 @@ enum dlm_ctxt_state {
struct dlm_ctxt
{
struct list_head list;
- struct hlist_head *lockres_hash;
+ struct hlist_head **lockres_hash;
struct list_head dirty_list;
struct list_head purge_list;
struct list_head pending_asts;
@@ -135,6 +138,11 @@ struct dlm_ctxt
struct list_head dlm_eviction_callbacks;
};
+static inline struct hlist_head *dlm_lockres_hash(struct dlm_ctxt *dlm, unsigned i)
+{
+ return dlm->lockres_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] + (i % DLM_BUCKETS_PER_PAGE);
+}
+
/* these keventd work queue items are for less-frequently
* called functions that cannot be directly called from the
* net message handlers for some reason, usually because
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c
index c7eae5d3324..e119e4ddf93 100644
--- a/fs/ocfs2/dlm/dlmdebug.c
+++ b/fs/ocfs2/dlm/dlmdebug.c
@@ -136,7 +136,7 @@ void dlm_dump_lock_resources(struct dlm_ctxt *dlm)
spin_lock(&dlm->spinlock);
for (i=0; i<DLM_HASH_BUCKETS; i++) {
- bucket = &(dlm->lockres_hash[i]);
+ bucket = dlm_lockres_hash(dlm, i);
hlist_for_each_entry(res, iter, bucket, hash_node)
dlm_print_one_lock_resource(res);
}
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index 595b1c7cbd1..80b8cce9cf3 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -49,6 +49,30 @@
#define MLOG_MASK_PREFIX (ML_DLM|ML_DLM_DOMAIN)
#include "cluster/masklog.h"
+static void dlm_free_pagevec(void **vec, int pages)
+{
+ while (pages--)
+ free_page((unsigned long)vec[pages]);
+ kfree(vec);
+}
+
+static void **dlm_alloc_pagevec(int pages)
+{
+ void **vec = kmalloc(pages * sizeof(void *), GFP_KERNEL);
+ int i;
+
+ if (!vec)
+ return NULL;
+
+ for (i = 0; i < pages; i++)
+ if (!(vec[i] = (void *)__get_free_page(GFP_KERNEL)))
+ goto out_free;
+ return vec;
+out_free:
+ dlm_free_pagevec(vec, i);
+ return NULL;
+}
+
/*
*
* spinlock lock ordering: if multiple locks are needed, obey this ordering:
@@ -90,7 +114,7 @@ void __dlm_insert_lockres(struct dlm_ctxt *dlm,
assert_spin_locked(&dlm->spinlock);
q = &res->lockname;
- bucket = &(dlm->lockres_hash[q->hash % DLM_HASH_BUCKETS]);
+ bucket = dlm_lockres_hash(dlm, q->hash);
/* get a reference for our hashtable */
dlm_lockres_get(res);
@@ -110,7 +134,8 @@ struct dlm_lock_resource * __dlm_lookup_lockres(struct dlm_ctxt *dlm,
assert_spin_locked(&dlm->spinlock);
- bucket = dlm->lockres_hash + full_name_hash(name, len) % DLM_HASH_BUCKETS;
+ bucket = dlm_lockres_hash(dlm, hash);
+
hlist_for_each(list, bucket) {
struct dlm_lock_resource *res = hlist_entry(list,
struct dlm_lock_resource, hash_node);
@@ -191,7 +216,7 @@ static int dlm_wait_on_domain_helper(const char *domain)
static void dlm_free_ctxt_mem(struct dlm_ctxt *dlm)
{
if (dlm->lockres_hash)
- free_page((unsigned long) dlm->lockres_hash);
+ dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);
if (dlm->name)
kfree(dlm->name);
@@ -301,8 +326,8 @@ static void dlm_migrate_all_locks(struct dlm_ctxt *dlm)
restart:
spin_lock(&dlm->spinlock);
for (i = 0; i < DLM_HASH_BUCKETS; i++) {
- while (!hlist_empty(&dlm->lockres_hash[i])) {
- res = hlist_entry(dlm->lockres_hash[i].first,
+ while (!hlist_empty(dlm_lockres_hash(dlm, i))) {
+ res = hlist_entry(dlm_lockres_hash(dlm, i)->first,
struct dlm_lock_resource, hash_node);
/* need reference when manually grabbing lockres */
dlm_lockres_get(res);
@@ -1188,7 +1213,7 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
goto leave;
}
- dlm->lockres_hash = (struct hlist_head *) __get_free_page(GFP_KERNEL);
+ dlm->lockres_hash = (struct hlist_head **)dlm_alloc_pagevec(DLM_HASH_PAGES);
if (!dlm->lockres_hash) {
mlog_errno(-ENOMEM);
kfree(dlm->name);
@@ -1197,8 +1222,8 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
goto leave;
}
- for (i=0; i<DLM_HASH_BUCKETS; i++)
- INIT_HLIST_HEAD(&dlm->lockres_hash[i]);
+ for (i = 0; i < DLM_HASH_BUCKETS; i++)
+ INIT_HLIST_HEAD(dlm_lockres_hash(dlm, i));
strcpy(dlm->name, domain);
dlm->key = key;
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 4f3d482a729..bf2a02eca62 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -1719,7 +1719,7 @@ static void dlm_finish_local_lockres_recovery(struct dlm_ctxt *dlm,
* the RECOVERING state and set the owner
* if necessary */
for (i = 0; i < DLM_HASH_BUCKETS; i++) {
- bucket = &(dlm->lockres_hash[i]);
+ bucket = dlm_lockres_hash(dlm, i);
hlist_for_each_entry(res, hash_iter, bucket, hash_node) {
if (res->state & DLM_LOCK_RES_RECOVERING) {
if (res->owner == dead_node) {
@@ -1884,7 +1884,7 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
* need to be fired as a result.
*/
for (i = 0; i < DLM_HASH_BUCKETS; i++) {
- bucket = &(dlm->lockres_hash[i]);
+ bucket = dlm_lockres_hash(dlm, i);
hlist_for_each_entry(res, iter, bucket, hash_node) {
/* always prune any $RECOVERY entries for dead nodes,
* otherwise hangs can occur during later recovery */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 12:40:19 +0000