RE: [PATCH v3 1/4] ida: Add ida_find_first_range()

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> From: Liu, Yi L <yi.l.liu@xxxxxxxxx>
> Sent: Thursday, September 12, 2024 9:17 PM
> 
> There is no helpers for user to check if a given ID is allocated or not,
> neither a helper to loop all the allocated IDs in an IDA and do something
> for cleanup. With the two needs, a helper to get the lowest allocated ID
> of a range and two variants based on it.
> 
> Caller can check if a given ID is allocated or not by:
> 
> 	bool ida_exists(struct ida *ida, unsigned int id)
> 
> Caller can iterate all allocated IDs by:
> 
> 	int id;
> 	while ((id = ida_find_first(&pasid_ida)) > 0) {
> 		//anything to do with the allocated ID
> 		ida_free(pasid_ida, pasid);
> 	}
> 
> Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
> Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
> Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>





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