116 int ocfs2_refresh_slot_info(struct ocfs2_super *osb)  in ocfs2_refresh_slot_info()  argument
119 	struct ocfs2_slot_info *si = osb->slot_info;  in ocfs2_refresh_slot_info()
137 		spin_lock(&osb->osb_lock);  in ocfs2_refresh_slot_info()
139 		spin_unlock(&osb->osb_lock);  in ocfs2_refresh_slot_info()
183 static int ocfs2_update_disk_slot(struct ocfs2_super *osb,  in ocfs2_update_disk_slot()  argument
190 	spin_lock(&osb->osb_lock);  in ocfs2_update_disk_slot()
195 	spin_unlock(&osb->osb_lock);  in ocfs2_update_disk_slot()
197 	status = ocfs2_write_block(osb, bh, INODE_CACHE(si->si_inode));  in ocfs2_update_disk_slot()
208 static int ocfs2_slot_map_physical_size(struct ocfs2_super *osb,  in ocfs2_slot_map_physical_size()  argument
214 	if (ocfs2_uses_extended_slot_map(osb)) {  in ocfs2_slot_map_physical_size()
215 		bytes_needed = osb->max_slots *  in ocfs2_slot_map_physical_size()
218 		bytes_needed = osb->max_slots * sizeof(__le16);  in ocfs2_slot_map_physical_size()
271 int ocfs2_node_num_to_slot(struct ocfs2_super *osb, unsigned int node_num)  in ocfs2_node_num_to_slot()  argument
274 	struct ocfs2_slot_info *si = osb->slot_info;  in ocfs2_node_num_to_slot()
276 	spin_lock(&osb->osb_lock);  in ocfs2_node_num_to_slot()
278 	spin_unlock(&osb->osb_lock);  in ocfs2_node_num_to_slot()
283 int ocfs2_slot_to_node_num_locked(struct ocfs2_super *osb, int slot_num,  in ocfs2_slot_to_node_num_locked()  argument
286 	struct ocfs2_slot_info *si = osb->slot_info;  in ocfs2_slot_to_node_num_locked()
288 	assert_spin_locked(&osb->osb_lock);  in ocfs2_slot_to_node_num_locked()
291 	BUG_ON(slot_num >= osb->max_slots);  in ocfs2_slot_to_node_num_locked()
321 int ocfs2_clear_slot(struct ocfs2_super *osb, int slot_num)  in ocfs2_clear_slot()  argument
323 	struct ocfs2_slot_info *si = osb->slot_info;  in ocfs2_clear_slot()
328 	spin_lock(&osb->osb_lock);  in ocfs2_clear_slot()
330 	spin_unlock(&osb->osb_lock);  in ocfs2_clear_slot()
332 	return ocfs2_update_disk_slot(osb, osb->slot_info, slot_num);  in ocfs2_clear_slot()
335 static int ocfs2_map_slot_buffers(struct ocfs2_super *osb,  in ocfs2_map_slot_buffers()  argument
344 	status = ocfs2_slot_map_physical_size(osb, si->si_inode, &bytes);  in ocfs2_map_slot_buffers()
356 			(osb->sb->s_blocksize /  in ocfs2_map_slot_buffers()
359 		si->si_slots_per_block = osb->sb->s_blocksize / sizeof(__le16);  in ocfs2_map_slot_buffers()
362 	BUG_ON((osb->max_slots / si->si_slots_per_block) > blocks);  in ocfs2_map_slot_buffers()
399 int ocfs2_init_slot_info(struct ocfs2_super *osb)  in ocfs2_init_slot_info()  argument
405 	si = kzalloc(struct_size(si, si_slots, osb->max_slots), GFP_KERNEL);  in ocfs2_init_slot_info()
412 	si->si_extended = ocfs2_uses_extended_slot_map(osb);  in ocfs2_init_slot_info()
413 	si->si_num_slots = osb->max_slots;  in ocfs2_init_slot_info()
415 	inode = ocfs2_get_system_file_inode(osb, SLOT_MAP_SYSTEM_INODE,  in ocfs2_init_slot_info()
424 	status = ocfs2_map_slot_buffers(osb, si);  in ocfs2_init_slot_info()
430 	osb->slot_info = (struct ocfs2_slot_info *)si;  in ocfs2_init_slot_info()
438 void ocfs2_free_slot_info(struct ocfs2_super *osb)  in ocfs2_free_slot_info()  argument
440 	struct ocfs2_slot_info *si = osb->slot_info;  in ocfs2_free_slot_info()
442 	osb->slot_info = NULL;  in ocfs2_free_slot_info()
446 int ocfs2_find_slot(struct ocfs2_super *osb)  in ocfs2_find_slot()  argument
452 	si = osb->slot_info;  in ocfs2_find_slot()
454 	spin_lock(&osb->osb_lock);  in ocfs2_find_slot()
461 	slot = __ocfs2_node_num_to_slot(si, osb->node_num);  in ocfs2_find_slot()
465 		slot = __ocfs2_find_empty_slot(si, osb->preferred_slot);  in ocfs2_find_slot()
467 			spin_unlock(&osb->osb_lock);  in ocfs2_find_slot()
474 		       "allocated to this node!\n", slot, osb->dev_str);  in ocfs2_find_slot()
476 	ocfs2_set_slot(si, slot, osb->node_num);  in ocfs2_find_slot()
477 	osb->slot_num = slot;  in ocfs2_find_slot()
478 	spin_unlock(&osb->osb_lock);  in ocfs2_find_slot()
480 	trace_ocfs2_find_slot(osb->slot_num);  in ocfs2_find_slot()
482 	status = ocfs2_update_disk_slot(osb, si, osb->slot_num);  in ocfs2_find_slot()
489 		spin_lock(&osb->osb_lock);  in ocfs2_find_slot()
490 		ocfs2_invalidate_slot(si, osb->slot_num);  in ocfs2_find_slot()
491 		osb->slot_num = OCFS2_INVALID_SLOT;  in ocfs2_find_slot()
492 		spin_unlock(&osb->osb_lock);  in ocfs2_find_slot()
499 void ocfs2_put_slot(struct ocfs2_super *osb)  in ocfs2_put_slot()  argument
502 	struct ocfs2_slot_info *si = osb->slot_info;  in ocfs2_put_slot()
507 	spin_lock(&osb->osb_lock);  in ocfs2_put_slot()
510 	slot_num = osb->slot_num;  in ocfs2_put_slot()
511 	ocfs2_invalidate_slot(si, osb->slot_num);  in ocfs2_put_slot()
512 	osb->slot_num = OCFS2_INVALID_SLOT;  in ocfs2_put_slot()
513 	spin_unlock(&osb->osb_lock);  in ocfs2_put_slot()
515 	status = ocfs2_update_disk_slot(osb, si, slot_num);  in ocfs2_put_slot()
519 	ocfs2_free_slot_info(osb);  in ocfs2_put_slot()