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>
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2a45f2d13e
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@ -75,6 +75,8 @@ static void ocfs2_super_bast_func(void *opaque,
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int level);
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static void ocfs2_rename_bast_func(void *opaque,
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int level);
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static struct ocfs2_super *ocfs2_get_dentry_osb(struct ocfs2_lock_res *lockres);
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static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres);
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/*
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* Return value from ocfs2_convert_worker_t functions.
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@ -116,6 +118,11 @@ static void ocfs2_dentry_post_unlock(struct ocfs2_super *osb,
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* These fine tune the behavior of the generic dlmglue locking infrastructure.
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*/
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struct ocfs2_lock_res_ops {
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/*
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* Translate an ocfs2_lock_res * into an ocfs2_super *. Define
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* this callback if ->l_priv is not an ocfs2_super pointer
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*/
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struct ocfs2_super * (*get_osb)(struct ocfs2_lock_res *);
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void (*bast)(void *, int);
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int (*unblock)(struct ocfs2_lock_res *, struct ocfs2_unblock_ctl *);
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void (*post_unlock)(struct ocfs2_super *, struct ocfs2_lock_res *);
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@ -144,18 +151,21 @@ static int ocfs2_generic_unblock_lock(struct ocfs2_super *osb,
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ocfs2_convert_worker_t *worker);
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static struct ocfs2_lock_res_ops ocfs2_inode_rw_lops = {
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.get_osb = ocfs2_get_inode_osb,
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.bast = ocfs2_inode_bast_func,
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.unblock = ocfs2_unblock_inode_lock,
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.flags = 0,
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};
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static struct ocfs2_lock_res_ops ocfs2_inode_meta_lops = {
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.get_osb = ocfs2_get_inode_osb,
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.bast = ocfs2_inode_bast_func,
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.unblock = ocfs2_unblock_meta,
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.flags = LOCK_TYPE_REQUIRES_REFRESH,
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};
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static struct ocfs2_lock_res_ops ocfs2_inode_data_lops = {
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.get_osb = ocfs2_get_inode_osb,
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.bast = ocfs2_inode_bast_func,
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.unblock = ocfs2_unblock_data,
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.flags = 0,
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@ -174,6 +184,7 @@ static struct ocfs2_lock_res_ops ocfs2_rename_lops = {
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};
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static struct ocfs2_lock_res_ops ocfs2_dentry_lops = {
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.get_osb = ocfs2_get_dentry_osb,
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.bast = ocfs2_dentry_bast_func,
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.unblock = ocfs2_unblock_dentry_lock,
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.post_unlock = ocfs2_dentry_post_unlock,
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@ -219,6 +230,14 @@ static inline struct ocfs2_dentry_lock *ocfs2_lock_res_dl(struct ocfs2_lock_res
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return (struct ocfs2_dentry_lock *)lockres->l_priv;
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}
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static inline struct ocfs2_super *ocfs2_get_lockres_osb(struct ocfs2_lock_res *lockres)
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{
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if (lockres->l_ops->get_osb)
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return lockres->l_ops->get_osb(lockres);
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return (struct ocfs2_super *)lockres->l_priv;
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}
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static int ocfs2_lock_create(struct ocfs2_super *osb,
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struct ocfs2_lock_res *lockres,
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int level,
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@ -352,6 +371,13 @@ void ocfs2_inode_lock_res_init(struct ocfs2_lock_res *res,
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ocfs2_lock_res_init_common(OCFS2_SB(inode->i_sb), res, type, ops, inode);
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}
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static struct ocfs2_super *ocfs2_get_inode_osb(struct ocfs2_lock_res *lockres)
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{
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struct inode *inode = ocfs2_lock_res_inode(lockres);
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return OCFS2_SB(inode->i_sb);
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}
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static __u64 ocfs2_get_dentry_lock_ino(struct ocfs2_lock_res *lockres)
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{
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__be64 inode_blkno_be;
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@ -362,6 +388,13 @@ static __u64 ocfs2_get_dentry_lock_ino(struct ocfs2_lock_res *lockres)
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return be64_to_cpu(inode_blkno_be);
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}
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static struct ocfs2_super *ocfs2_get_dentry_osb(struct ocfs2_lock_res *lockres)
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{
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struct ocfs2_dentry_lock *dl = lockres->l_priv;
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return OCFS2_SB(dl->dl_inode->i_sb);
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}
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void ocfs2_dentry_lock_res_init(struct ocfs2_dentry_lock *dl,
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u64 parent, struct inode *inode)
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{
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