ocfs2: Add ->get_osb() dlmglue locking operation
Will be used to find the ocfs2_super structure from a given lockres.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 7532f80..2e4d43a 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -75,6 +75,8 @@
int level);
static void ocfs2_rename_bast_func(void *opaque,
int level);
+static struct ocfs2_super *ocfs2_get_dentry_osb(struct ocfs2_lock_res *lockres);
+static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres);
/*
* Return value from ocfs2_convert_worker_t functions.
@@ -116,6 +118,11 @@
* These fine tune the behavior of the generic dlmglue locking infrastructure.
*/
struct ocfs2_lock_res_ops {
+ /*
+ * Translate an ocfs2_lock_res * into an ocfs2_super *. Define
+ * this callback if ->l_priv is not an ocfs2_super pointer
+ */
+ struct ocfs2_super * (*get_osb)(struct ocfs2_lock_res *);
void (*bast)(void *, int);
int (*unblock)(struct ocfs2_lock_res *, struct ocfs2_unblock_ctl *);
void (*post_unlock)(struct ocfs2_super *, struct ocfs2_lock_res *);
@@ -144,18 +151,21 @@
ocfs2_convert_worker_t *worker);
static struct ocfs2_lock_res_ops ocfs2_inode_rw_lops = {
+ .get_osb = ocfs2_get_inode_osb,
.bast = ocfs2_inode_bast_func,
.unblock = ocfs2_unblock_inode_lock,
.flags = 0,
};
static struct ocfs2_lock_res_ops ocfs2_inode_meta_lops = {
+ .get_osb = ocfs2_get_inode_osb,
.bast = ocfs2_inode_bast_func,
.unblock = ocfs2_unblock_meta,
.flags = LOCK_TYPE_REQUIRES_REFRESH,
};
static struct ocfs2_lock_res_ops ocfs2_inode_data_lops = {
+ .get_osb = ocfs2_get_inode_osb,
.bast = ocfs2_inode_bast_func,
.unblock = ocfs2_unblock_data,
.flags = 0,
@@ -174,6 +184,7 @@
};
static struct ocfs2_lock_res_ops ocfs2_dentry_lops = {
+ .get_osb = ocfs2_get_dentry_osb,
.bast = ocfs2_dentry_bast_func,
.unblock = ocfs2_unblock_dentry_lock,
.post_unlock = ocfs2_dentry_post_unlock,
@@ -219,6 +230,14 @@
return (struct ocfs2_dentry_lock *)lockres->l_priv;
}
+static inline struct ocfs2_super *ocfs2_get_lockres_osb(struct ocfs2_lock_res *lockres)
+{
+ if (lockres->l_ops->get_osb)
+ return lockres->l_ops->get_osb(lockres);
+
+ return (struct ocfs2_super *)lockres->l_priv;
+}
+
static int ocfs2_lock_create(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres,
int level,
@@ -352,6 +371,13 @@
ocfs2_lock_res_init_common(OCFS2_SB(inode->i_sb), res, type, ops, inode);
}
+static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres)
+{
+ struct inode *inode = ocfs2_lock_res_inode(lockres);
+
+ return OCFS2_SB(inode->i_sb);
+}
+
static __u64 ocfs2_get_dentry_lock_ino(struct ocfs2_lock_res *lockres)
{
__be64 inode_blkno_be;
@@ -362,6 +388,13 @@
return be64_to_cpu(inode_blkno_be);
}
+static struct ocfs2_super *ocfs2_get_dentry_osb(struct ocfs2_lock_res *lockres)
+{
+ struct ocfs2_dentry_lock *dl = lockres->l_priv;
+
+ return OCFS2_SB(dl->dl_inode->i_sb);
+}
+
void ocfs2_dentry_lock_res_init(struct ocfs2_dentry_lock *dl,
u64 parent, struct inode *inode)
{