static void ocfs2_do_node_down(int node_num,
struct ocfs2_super *osb)
{
BUG_ON(osb->node_num == node_num);
mlog(0, "ocfs2: node down event for %d\n", node_num);
if (!osb->dlm) {
/*
* No DLM means we're not even ready to participate yet.
* We check the slots after the DLM comes up, so we will
* notice the node death then. We can safely ignore it
* here.
*/
return;
}
if (ocfs2_node_map_test_bit(osb, &osb->umount_map, node_num)) {
/* If a node is in the umount map, then we've been
* expecting him to go down and we know ahead of time
* that recovery is not necessary. */
ocfs2_node_map_clear_bit(osb, &osb->umount_map, node_num);
return;
}
ocfs2_recovery_thread(osb, node_num);
ocfs2_remove_node_from_vote_queues(osb, node_num);
}
/*
* Serialize with orphan dir recovery. If the process doing
* recovery on this orphan dir does an iget() with the dir
* i_mutex held, we'll deadlock here. Instead we detect this
* and exit early - recovery will wipe this inode for us.
*/
static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
int slot)
{
int ret = 0;
spin_lock(&osb->osb_lock);
if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) {
ret = -EDEADLK;
goto out;
}
/* This signals to the orphan recovery process that it should
* wait for us to handle the wipe. */
osb->osb_orphan_wipes[slot]++;
out:
spin_unlock(&osb->osb_lock);
trace_ocfs2_check_orphan_recovery_state(slot, ret);
return ret;
}
/*
* Serialize with orphan dir recovery. If the process doing
* recovery on this orphan dir does an iget() with the dir
* i_mutex held, we'll deadlock here. Instead we detect this
* and exit early - recovery will wipe this inode for us.
*/
static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb,
int slot)
{
int ret = 0;
spin_lock(&osb->osb_lock);
if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) {
mlog(0, "Recovery is happening on orphan dir %d, will skip "
"this inode\n", slot);
ret = -EDEADLK;
goto out;
}
/* This signals to the orphan recovery process that it should
* wait for us to handle the wipe. */
osb->osb_orphan_wipes[slot]++;
out:
spin_unlock(&osb->osb_lock);
return ret;
}
