bio: safeguard REQ_ALLOC_CACHE bio put
bio_put() with REQ_ALLOC_CACHE assumes that it's executed not from an irq context. Let's add a warning if the invariant is not respected, especially since there is a couple of places removing REQ_POLLED by hand without also clearing REQ_ALLOC_CACHE. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/558d78313476c4e9c233902efa0092644c3d420a.1666122465.git.asml.silence@gmail.comSigned-off-by: Jens Axboe <axboe@kernel.dk>
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