* @idp: idr handle
* @gfp_mask: memory allocation flags
*
- * This function should be called prior to locking and calling the
- * idr_get_new* functions. It preallocates enough memory to satisfy
- * the worst possible allocation.
+ * This function should be called prior to calling the idr_get_new* functions.
+ * It preallocates enough memory to satisfy the worst possible allocation. The
+ * caller should pass in GFP_KERNEL if possible. This of course requires that
+ * no spinning locks be held.
*
* If the system is REALLY out of memory this function returns 0,
* otherwise 1.
* idr_get_new_above - allocate new idr entry above or equal to a start id
* @idp: idr handle
* @ptr: pointer you want associated with the id
- * @start_id: id to start search at
+ * @starting_id: id to start search at
* @id: pointer to the allocated handle
*
* This is the allocate id function. It should be called with any
* required locks.
*
- * If memory is required, it will return -EAGAIN, you should unlock
- * and go back to the idr_pre_get() call. If the idr is full, it will
- * return -ENOSPC.
+ * If allocation from IDR's private freelist fails, idr_get_new_above() will
+ * return -EAGAIN. The caller should retry the idr_pre_get() call to refill
+ * IDR's preallocation and then retry the idr_get_new_above() call.
+ *
+ * If the idr is full idr_get_new_above() will return -ENOSPC.
*
* @id returns a value in the range @starting_id ... 0x7fffffff
*/
* @ptr: pointer you want associated with the id
* @id: pointer to the allocated handle
*
- * This is the allocate id function. It should be called with any
- * required locks.
+ * If allocation from IDR's private freelist fails, idr_get_new_above() will
+ * return -EAGAIN. The caller should retry the idr_pre_get() call to refill
+ * IDR's preallocation and then retry the idr_get_new_above() call.
*
- * If memory is required, it will return -EAGAIN, you should unlock
- * and go back to the idr_pre_get() call. If the idr is full, it will
- * return -ENOSPC.
+ * If the idr is full idr_get_new_above() will return -ENOSPC.
*
* @id returns a value in the range 0 ... 0x7fffffff
*/
/**
* idr_destroy - release all cached layers within an idr tree
- * idp: idr handle
+ * @idp: idr handle
*/
void idr_destroy(struct idr *idp)
{
/**
* idr_get_next - lookup next object of id to given id.
* @idp: idr handle
- * @id: pointer to lookup key
+ * @nextidp: pointer to lookup key
*
* Returns pointer to registered object with id, which is next number to
- * given id.
+ * given id. After being looked up, *@nextidp will be updated for the next
+ * iteration.
*/
void *idr_get_next(struct idr *idp, int *nextidp)
/**
* ida_get_new_above - allocate new ID above or equal to a start id
* @ida: ida handle
- * @staring_id: id to start search at
+ * @starting_id: id to start search at
* @p_id: pointer to the allocated handle
*
* Allocate new ID above or equal to @ida. It should be called with
/**
* ida_destroy - release all cached layers within an ida tree
- * ida: ida handle
+ * @ida: ida handle
*/
void ida_destroy(struct ida *ida)
{