From: Christoph Hellwig <hch@lst.de>
To: Vlastimil Babka <vbabka@kernel.org>, Harry Yoo <harry@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Hao Li <hao.li@linux.dev>, Christoph Lameter <cl@gentwo.org>,
David Rientjes <rientjes@google.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Jesper Dangaard Brouer <hawk@kernel.org>,
linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, io-uring@vger.kernel.org,
kasan-dev@googlegroups.com, bpf@vger.kernel.org,
netdev@vger.kernel.org
Subject: improve the kmem_cache_alloc_bulk API v2
Date: Thu, 28 May 2026 11:34:31 +0200 [thread overview]
Message-ID: <20260528093437.2519248-1-hch@lst.de> (raw)
Hi all,
kmem_cache_alloc_bulk has a very unintuitive and undocumented return
value convention. Fix that and add documentation.
Changes since v1:
- fix compile in drm and test_meminit
- document that 0-sized allocations fail
Diffstat:
drivers/gpu/drm/msm/msm_iommu.c | 6 +--
drivers/gpu/drm/panthor/panthor_mmu.c | 13 +++----
include/linux/slab.h | 6 ++-
io_uring/io_uring.c | 23 +++++--------
lib/test_meminit.c | 23 ++++++-------
mm/kasan/kasan_test_c.c | 5 +-
mm/kfence/kfence_test.c | 9 ++---
mm/slub.c | 59 +++++++++++++++++++---------------
net/bpf/test_run.c | 7 +---
net/core/skbuff.c | 24 +++++++------
tools/include/linux/slab.h | 2 -
tools/testing/shared/linux.c | 19 ++++------
12 files changed, 97 insertions(+), 99 deletions(-)
next reply other threads:[~2026-05-28 9:34 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-28 9:34 Christoph Hellwig [this message]
2026-05-28 9:34 ` [PATCH] mm/slab: improve kmem_cache_alloc_bulk Christoph Hellwig
2026-05-29 11:54 ` Vlastimil Babka (SUSE)
2026-05-29 13:50 ` Christoph Hellwig
2026-06-01 6:39 ` Harry Yoo
2026-06-01 7:56 ` msm_iommu_pagetable_prealloc_allocate, was: " Christoph Hellwig
2026-06-01 8:16 ` Vlastimil Babka (SUSE)
2026-06-01 11:38 ` Christoph Hellwig
2026-06-01 12:50 ` Vlastimil Babka (SUSE)
2026-06-01 13:32 ` Rob Clark
2026-06-01 14:39 ` Rob Clark
2026-06-03 9:17 ` Vlastimil Babka (SUSE)
2026-06-03 11:13 ` Rob Clark
2026-06-03 16:22 ` Vlastimil Babka (SUSE)
2026-06-04 7:10 ` Harry Yoo
2026-06-04 7:35 ` Vlastimil Babka (SUSE)
2026-06-04 9:36 ` Rob Clark
2026-06-01 11:39 ` Harry Yoo
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