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-rw-r--r--fs/dlm/lockspace.c116
1 files changed, 54 insertions, 62 deletions
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 493d1e7161a4..871fe6deb5fa 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -472,17 +472,8 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
spin_lock_init(&ls->ls_rsbtbl[i].lock);
}
- size = dlm_config.ci_lkbtbl_size;
- ls->ls_lkbtbl_size = size;
-
- ls->ls_lkbtbl = vmalloc(sizeof(struct dlm_lkbtable) * size);
- if (!ls->ls_lkbtbl)
- goto out_rsbfree;
- for (i = 0; i < size; i++) {
- INIT_LIST_HEAD(&ls->ls_lkbtbl[i].list);
- rwlock_init(&ls->ls_lkbtbl[i].lock);
- ls->ls_lkbtbl[i].counter = 1;
- }
+ idr_init(&ls->ls_lkbidr);
+ spin_lock_init(&ls->ls_lkbidr_spin);
size = dlm_config.ci_dirtbl_size;
ls->ls_dirtbl_size = size;
@@ -605,8 +596,7 @@ static int new_lockspace(const char *name, int namelen, void **lockspace,
out_dirfree:
vfree(ls->ls_dirtbl);
out_lkbfree:
- vfree(ls->ls_lkbtbl);
- out_rsbfree:
+ idr_destroy(&ls->ls_lkbidr);
vfree(ls->ls_rsbtbl);
out_lsfree:
if (do_unreg)
@@ -641,50 +631,66 @@ int dlm_new_lockspace(const char *name, int namelen, void **lockspace,
return error;
}
-/* Return 1 if the lockspace still has active remote locks,
- * 2 if the lockspace still has active local locks.
- */
-static int lockspace_busy(struct dlm_ls *ls)
-{
- int i, lkb_found = 0;
- struct dlm_lkb *lkb;
-
- /* NOTE: We check the lockidtbl here rather than the resource table.
- This is because there may be LKBs queued as ASTs that have been
- unlinked from their RSBs and are pending deletion once the AST has
- been delivered */
-
- for (i = 0; i < ls->ls_lkbtbl_size; i++) {
- read_lock(&ls->ls_lkbtbl[i].lock);
- if (!list_empty(&ls->ls_lkbtbl[i].list)) {
- lkb_found = 1;
- list_for_each_entry(lkb, &ls->ls_lkbtbl[i].list,
- lkb_idtbl_list) {
- if (!lkb->lkb_nodeid) {
- read_unlock(&ls->ls_lkbtbl[i].lock);
- return 2;
- }
- }
- }
- read_unlock(&ls->ls_lkbtbl[i].lock);
+static int lkb_idr_is_local(int id, void *p, void *data)
+{
+ struct dlm_lkb *lkb = p;
+
+ if (!lkb->lkb_nodeid)
+ return 1;
+ return 0;
+}
+
+static int lkb_idr_is_any(int id, void *p, void *data)
+{
+ return 1;
+}
+
+static int lkb_idr_free(int id, void *p, void *data)
+{
+ struct dlm_lkb *lkb = p;
+
+ dlm_del_ast(lkb);
+
+ if (lkb->lkb_lvbptr && lkb->lkb_flags & DLM_IFL_MSTCPY)
+ dlm_free_lvb(lkb->lkb_lvbptr);
+
+ dlm_free_lkb(lkb);
+ return 0;
+}
+
+/* NOTE: We check the lkbidr here rather than the resource table.
+ This is because there may be LKBs queued as ASTs that have been unlinked
+ from their RSBs and are pending deletion once the AST has been delivered */
+
+static int lockspace_busy(struct dlm_ls *ls, int force)
+{
+ int rv;
+
+ spin_lock(&ls->ls_lkbidr_spin);
+ if (force == 0) {
+ rv = idr_for_each(&ls->ls_lkbidr, lkb_idr_is_any, ls);
+ } else if (force == 1) {
+ rv = idr_for_each(&ls->ls_lkbidr, lkb_idr_is_local, ls);
+ } else {
+ rv = 0;
}
- return lkb_found;
+ spin_unlock(&ls->ls_lkbidr_spin);
+ return rv;
}
static int release_lockspace(struct dlm_ls *ls, int force)
{
- struct dlm_lkb *lkb;
struct dlm_rsb *rsb;
struct list_head *head;
int i, busy, rv;
- busy = lockspace_busy(ls);
+ busy = lockspace_busy(ls, force);
spin_lock(&lslist_lock);
if (ls->ls_create_count == 1) {
- if (busy > force)
+ if (busy) {
rv = -EBUSY;
- else {
+ } else {
/* remove_lockspace takes ls off lslist */
ls->ls_create_count = 0;
rv = 0;
@@ -724,29 +730,15 @@ static int release_lockspace(struct dlm_ls *ls, int force)
vfree(ls->ls_dirtbl);
/*
- * Free all lkb's on lkbtbl[] lists.
+ * Free all lkb's in idr
*/
- for (i = 0; i < ls->ls_lkbtbl_size; i++) {
- head = &ls->ls_lkbtbl[i].list;
- while (!list_empty(head)) {
- lkb = list_entry(head->next, struct dlm_lkb,
- lkb_idtbl_list);
-
- list_del(&lkb->lkb_idtbl_list);
-
- dlm_del_ast(lkb);
+ idr_for_each(&ls->ls_lkbidr, lkb_idr_free, ls);
+ idr_remove_all(&ls->ls_lkbidr);
+ idr_destroy(&ls->ls_lkbidr);
- if (lkb->lkb_lvbptr && lkb->lkb_flags & DLM_IFL_MSTCPY)
- dlm_free_lvb(lkb->lkb_lvbptr);
-
- dlm_free_lkb(lkb);
- }
- }
dlm_astd_resume();
- vfree(ls->ls_lkbtbl);
-
/*
* Free all rsb's on rsbtbl[] lists
*/