[PATCH 0/2] zswap pool per-CPU acomp_ctx simplifications

["Kanchana P. Sridhar" <kanchanapsridhar2026@gmail.com>]

This patchset persists the zswap pool's per-CPU acomp_ctx resources to
last until the pool is destroyed. It then simplifies the per-CPU
acomp_ctx mutex locking in zswap_compress()/zswap_decompress().

Further, it consistently uses the same checks for valid
acomp_ctx->acomp/req in zswap procedures that allocate/deallocate
acomp_ctx members.

These are independent submissions of patches 23 and 24 from [1], to
facilitate merging. The Acks are preserved from [1].

[1]: https://patchwork.kernel.org/project/linux-mm/list/?series=1046677

Kanchana P. Sridhar (2):
  mm: zswap: Tie per-CPU acomp_ctx lifetime to the pool.
  mm: zswap: Consistently use IS_ERR_OR_NULL() to check acomp_ctx
    resources.

 mm/zswap.c | 163 ++++++++++++++++++++++-------------------------------
 1 file changed, 66 insertions(+), 97 deletions(-)

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2.39.5