linux-kernel - [PATCH 0/3] mm: remove zpool

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Message-ID: <20250829162212.208258-1-hannes@cmpxchg.org>
Date: Fri, 29 Aug 2025 17:15:25 +0100
From: Johannes Weiner <hannes@...xchg.org>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Yosry Ahmed <yosryahmed@...gle.com>,
	Nhat Pham <nphamcs@...il.com>,
	Chengming Zhou <zhouchengming@...edance.com>,
	linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/3] mm: remove zpool

zpool is an indirection layer for zswap to switch between multiple
allocator backends at runtime. Since 6.15, zsmalloc is the only
allocator left in-tree, so there is no point in keeping zpool around.

Based on mm-everything-2025-08-29-00-23.

 Documentation/admin-guide/mm/zswap.rst             |  33 +--
 Documentation/core-api/mm-api.rst                  |   1 -
 Documentation/driver-api/crypto/iaa/iaa-crypto.rst |   2 -
 MAINTAINERS                                        |   2 -
 arch/loongarch/configs/loongson3_defconfig         |   1 -
 include/linux/zpool.h                              |  86 ------
 mm/Kconfig                                         |  49 +--
 mm/Makefile                                        |   1 -
 mm/zpdesc.h                                        |  14 +-
 mm/zpool.c                                         | 328 ---------------------
 mm/zsmalloc.c                                      |  79 -----
 mm/zswap.c                                         | 202 ++++---------
 tools/testing/selftests/zram/README                |   1 -
 13 files changed, 84 insertions(+), 715 deletions(-)