[PATCH v1 19/23] cachefiles: implement .demand_read() for demand read

Matthew Wilcox willy at infradead.org
Tue Dec 28 02:36:33 AEDT 2021


On Mon, Dec 27, 2021 at 08:54:40PM +0800, Jeffle Xu wrote:
> +	spin_lock(&cache->reqs_lock);
> +	ret = idr_alloc(&cache->reqs, req, 0, 0, GFP_KERNEL);

GFP_KERNEL while holding a spinlock?

You should be using an XArray instead of an IDR in new code anyway.



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