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authorPavan Vilas Sondur <pavan@dev.gluster.com>2009-09-23 06:02:55 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-09-23 06:27:30 -0700
commit231196910d9d36af9546ddc511b26da5628b3ab8 (patch)
treee12dd77d1739f4eb7777d27b0d66c1683966d409 /xlators/features/locks/src/common.c
parent435b28132b8f276681d19ae14fa988d26a16f659 (diff)
Implemented entry locks and support for domains.
Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 222 (Enhance Internal locks to support multilple domains and rewrite inodelks) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=222
Diffstat (limited to 'xlators/features/locks/src/common.c')
-rw-r--r--xlators/features/locks/src/common.c53
1 files changed, 52 insertions, 1 deletions
diff --git a/xlators/features/locks/src/common.c b/xlators/features/locks/src/common.c
index 2a393e7d7..c7137a82c 100644
--- a/xlators/features/locks/src/common.c
+++ b/xlators/features/locks/src/common.c
@@ -44,6 +44,57 @@ static void
__insert_and_merge (pl_inode_t *pl_inode, posix_lock_t *lock,
gf_lk_domain_t dom);
+static pl_dom_list_t *
+allocate_domain(const char *volume)
+{
+ pl_dom_list_t *dom = NULL;
+
+ dom = CALLOC (1, sizeof (*dom));
+ if (!dom)
+ return NULL;
+
+
+ dom->domain = strdup(volume);
+ if (!dom->domain) {
+ gf_log ("posix-locks", GF_LOG_TRACE,
+ "Out of Memory");
+ return NULL;
+ }
+
+ gf_log ("posix-locks", GF_LOG_TRACE,
+ "New domain allocated: %s", dom->domain);
+
+ INIT_LIST_HEAD (&dom->inode_list);
+ INIT_LIST_HEAD (&dom->entrylk_list);
+ INIT_LIST_HEAD (&dom->blocked_entrylks);
+ INIT_LIST_HEAD (&dom->inodelk_list);
+
+ return dom;
+}
+
+/* Returns domain for the lock. If domain is not present,
+ * allocates a domain and returns it
+ */
+pl_dom_list_t *
+get_domain (pl_inode_t *pl_inode, const char *volume)
+{
+ pl_dom_list_t *dom = NULL;
+
+ list_for_each_entry (dom, &pl_inode->dom_list, inode_list) {
+ if (strcmp (dom->domain, volume) == 0)
+ goto found;
+
+
+ }
+
+ dom = allocate_domain(volume);
+
+ if (dom)
+ list_add (&dom->inode_list, &pl_inode->dom_list);
+found:
+
+ return dom;
+}
pl_inode_t *
pl_inode_get (xlator_t *this, inode_t *inode)
@@ -72,7 +123,7 @@ pl_inode_get (xlator_t *this, inode_t *inode)
pthread_mutex_init (&pl_inode->mutex, NULL);
- INIT_LIST_HEAD (&pl_inode->dir_list);
+ INIT_LIST_HEAD (&pl_inode->dom_list);
INIT_LIST_HEAD (&pl_inode->ext_list);
INIT_LIST_HEAD (&pl_inode->int_list);
INIT_LIST_HEAD (&pl_inode->rw_list);