lkml.org 
[lkml]   [2009]   [Mar]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 20/32] ocfs2/dlm: Create and destroy the dlm->master_hash
Date
From: Sunil Mushran <sunil.mushran@oracle.com>

This patch adds code to create and destroy the dlm->master_hash.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>
---
fs/ocfs2/dlm/dlmcommon.h | 8 ++++++++
fs/ocfs2/dlm/dlmdomain.c | 18 ++++++++++++++++++
2 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/fs/ocfs2/dlm/dlmcommon.h b/fs/ocfs2/dlm/dlmcommon.h
index b232aa0..425653f 100644
--- a/fs/ocfs2/dlm/dlmcommon.h
+++ b/fs/ocfs2/dlm/dlmcommon.h
@@ -151,6 +151,7 @@ struct dlm_ctxt
unsigned long recovery_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
struct dlm_recovery_ctxt reco;
spinlock_t master_lock;
+ struct hlist_head **master_hash;
struct list_head master_list;
struct list_head mle_hb_events;

@@ -195,6 +196,13 @@ static inline struct hlist_head *dlm_lockres_hash(struct dlm_ctxt *dlm, unsigned
return dlm->lockres_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] + (i % DLM_BUCKETS_PER_PAGE);
}

+static inline struct hlist_head *dlm_master_hash(struct dlm_ctxt *dlm,
+ unsigned i)
+{
+ return dlm->master_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/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index d8d578f..4531504 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -304,6 +304,9 @@ static void dlm_free_ctxt_mem(struct dlm_ctxt *dlm)
if (dlm->lockres_hash)
dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);

+ if (dlm->master_hash)
+ dlm_free_pagevec((void **)dlm->master_hash, DLM_HASH_PAGES);
+
if (dlm->name)
kfree(dlm->name);

@@ -1534,12 +1537,27 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
for (i = 0; i < DLM_HASH_BUCKETS; i++)
INIT_HLIST_HEAD(dlm_lockres_hash(dlm, i));

+ dlm->master_hash = (struct hlist_head **)
+ dlm_alloc_pagevec(DLM_HASH_PAGES);
+ if (!dlm->master_hash) {
+ mlog_errno(-ENOMEM);
+ dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);
+ kfree(dlm->name);
+ kfree(dlm);
+ dlm = NULL;
+ goto leave;
+ }
+
+ for (i = 0; i < DLM_HASH_BUCKETS; i++)
+ INIT_HLIST_HEAD(dlm_master_hash(dlm, i));
+
strcpy(dlm->name, domain);
dlm->key = key;
dlm->node_num = o2nm_this_node();

ret = dlm_create_debugfs_subroot(dlm);
if (ret < 0) {
+ dlm_free_pagevec((void **)dlm->master_hash, DLM_HASH_PAGES);
dlm_free_pagevec((void **)dlm->lockres_hash, DLM_HASH_PAGES);
kfree(dlm->name);
kfree(dlm);
--
1.5.6


\
 
 \ /
  Last update: 2009-03-17 22:35    [W:0.187 / U:0.156 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site