/*
* finish off updating the recorded status of a file
* - starts callback expiry timer
* - adds to server's callback list
*/
void afs_vnode_finalise_status_update(afs_vnode_t *vnode, afs_server_t *server, int ret)
{
afs_server_t *oldserver = NULL;
_enter("%p,%p,%d",vnode,server,ret);
spin_lock(&vnode->lock);
vnode->flags &= ~AFS_VNODE_CHANGED;
if (ret==0) {
/* adjust the callback timeout appropriately */
afs_kafstimod_add_timer(&vnode->cb_timeout,vnode->cb_expiry*HZ);
spin_lock(&afs_cb_hash_lock);
list_del(&vnode->cb_hash_link);
list_add_tail(&vnode->cb_hash_link,&afs_cb_hash(server,&vnode->fid));
spin_unlock(&afs_cb_hash_lock);
/* swap ref to old callback server with that for new callback server */
oldserver = xchg(&vnode->cb_server,server);
if (oldserver!=server) {
if (oldserver) {
spin_lock(&oldserver->cb_lock);
list_del_init(&vnode->cb_link);
spin_unlock(&oldserver->cb_lock);
}
afs_get_server(server);
spin_lock(&server->cb_lock);
list_add_tail(&vnode->cb_link,&server->cb_promises);
spin_unlock(&server->cb_lock);
}
else {
/* same server */
oldserver = NULL;
}
}
else if (ret==-ENOENT) {
/* the file was deleted - clear the callback timeout */
oldserver = xchg(&vnode->cb_server,NULL);
afs_kafstimod_del_timer(&vnode->cb_timeout);
_debug("got NOENT from server - marking file deleted");
vnode->flags |= AFS_VNODE_DELETED;
}
vnode->update_cnt--;
spin_unlock(&vnode->lock);
wake_up_all(&vnode->update_waitq);
afs_put_server(oldserver);
_leave("");
} /* end afs_vnode_finalise_status_update() */
/*
* break any outstanding callback on a vnode
* - only relevent to server that issued it
*/
int afs_vnode_give_up_callback(struct afs_vnode *vnode)
{
struct afs_server *server;
int ret;
_enter("%s,{%u,%u,%u}",
vnode->volume->vlocation->vldb.name,
vnode->fid.vid,
vnode->fid.vnode,
vnode->fid.unique);
spin_lock(&afs_cb_hash_lock);
list_del_init(&vnode->cb_hash_link);
spin_unlock(&afs_cb_hash_lock);
/* set the changed flag in the vnode and release the server */
spin_lock(&vnode->lock);
afs_kafstimod_del_timer(&vnode->cb_timeout);
server = xchg(&vnode->cb_server, NULL);
if (server) {
vnode->flags |= AFS_VNODE_CHANGED;
spin_lock(&server->cb_lock);
list_del_init(&vnode->cb_link);
spin_unlock(&server->cb_lock);
}
spin_unlock(&vnode->lock);
ret = 0;
if (server) {
ret = afs_rxfs_give_up_callback(server, vnode);
afs_put_server(server);
}
_leave(" = %d", ret);
return ret;
} /* end afs_vnode_give_up_callback() */
