[PATCH 0/3] Fix a deadlock in blk-crypto-fallback

[Eric Biggers <ebiggers@kernel.org>]

This series fixes a deadlock in blk-crypto-fallback that could occur
when a large WRITE bio was submitted to dm-inlinecrypt.

As a prerequisite, it makes mempool_alloc_bulk() support fallible
allocations in the same way that mempool_alloc() does.

Please consider this series for the block tree for 7.3.

Eric Biggers (3):
  mm: make mempool_alloc_from_pool() return bool
  mm: support fallible mempool_alloc_bulk()
  blk-crypto-fallback: Fix deadlock when encrypting large bio in dm
    layer

 block/blk-crypto-fallback.c | 72 +++++++++++++++++++++++++++++++++----
 include/linux/mempool.h     |  4 +--
 mm/mempool.c                | 50 +++++++++++++++++---------
 3 files changed, 100 insertions(+), 26 deletions(-)


base-commit: 0d839570765118029aa8bf4a95444c6a11aacf85
-- 
2.55.0