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See http://www.infradead.org/rpr.html X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: D31C580010 X-Stat-Signature: r3h5otz683bzyowo8ogqpsznq8f6uhbq X-Rspam-User: X-HE-Tag: 1762869191-694571 X-HE-Meta: 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 iUMuTUlZ 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi all, this series adds a bulk version of mempool_alloc that makes allocating multiple objects deadlock safe. The initial users is the blk-crypto-fallback code: https://lore.kernel.org/linux-block/20251031093517.1603379-1-hch@lst.de/ with which v1 was posted, but I also have a few other users in mind. Changes since v1: - fix build for !CONFIG_FAULT_INJECTION - improve the kerneldoc comments further - refactor the code so that the mempool_alloc fastpath does not have to deal with arrays - don't support !__GFP_DIRECT_RECLAIM for bulk allocations - do poll allocations even if not all elements are available - s/elem/elems/ - use a separate failure injection know for the bulk allocator diffstat: include/linux/fault-inject.h | 8 - include/linux/mempool.h | 7 mm/mempool.c | 341 ++++++++++++++++++++++++++++--------------- 3 files changed, 240 insertions(+), 116 deletions(-)