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mm: support fallible mempool_alloc_bulk()
To fix a deadlock, blk-crypto-fallback needs to be able to make fallible mempool_alloc_bulk() allocations. But mempool_alloc_bulk() hardcodes GFP_KERNEL and infinite retries, which differs from mempo
To fix a deadlock, blk-crypto-fallback needs to be able to make fallible mempool_alloc_bulk() allocations. But mempool_alloc_bulk() hardcodes GFP_KERNEL and infinite retries, which differs from mempo