linux-kernel - [PATCH v2 00/10] __vmalloc() and no-block support(v2)

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Message-ID: <20250915134041.151462-1-urezki@gmail.com>
Date: Mon, 15 Sep 2025 15:40:30 +0200
From: "Uladzislau Rezki (Sony)" <urezki@...il.com>
To: linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: Michal Hocko <mhocko@...nel.org>,
	Baoquan He <bhe@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Uladzislau Rezki <urezki@...il.com>
Subject: [PATCH v2 00/10] __vmalloc() and no-block support(v2)

This is v2, i do not count RFC version. It is based on Linux 6.17-rc6.

https://lore.kernel.org/all/20250704152537.55724-1-urezki@gmail.com/
https://lkml.org/lkml/2025/8/7/332

It makes __vmalloc() to support non-blocking flags such as GFP_ATOMIC
and GFP_NOWAIT, vmalloc_huge() is not supported yet.

v1 -> v2:
 - plumb gfp to KMSAN for its internal allocations;
 - update documentation of __vmalloc_node_range();
 - Instead if dropping direct reclaim flag, check PF_MEMALLOC in might_alloc();
 - dropped "mm/vmalloc: Remove cond_resched() in vm_area_alloc_pages()"
   patch and keep cond_resched() points. Need more investigation before
   dropping them.

Uladzislau Rezki (Sony) (10):
  lib/test_vmalloc: add no_block_alloc_test case
  lib/test_vmalloc: Remove xfail condition check
  mm/vmalloc: Support non-blocking GFP flags in alloc_vmap_area()
  mm/vmalloc: Avoid cond_resched() when blocking is not permitted
  mm/vmalloc: Defer freeing partly initialized vm_struct
  mm/vmalloc: Handle non-blocking GFP in __vmalloc_area_node()
  mm/kasan: Support non-blocking GFP in kasan_populate_vmalloc()
  kmsan: Remove hard-coded GFP_KERNEL flags
  mm: Skip might_alloc() warnings when PF_MEMALLOC is set
  mm/vmalloc: Update __vmalloc_node_range() documentation

 include/linux/kmsan.h    |   6 +-
 include/linux/sched/mm.h |   3 +-
 include/linux/vmalloc.h  |   8 +-
 lib/test_vmalloc.c       |  28 ++++++-
 mm/internal.h            |   4 +-
 mm/kasan/shadow.c        |  12 +--
 mm/kmsan/shadow.c        |   6 +-
 mm/percpu-vm.c           |   2 +-
 mm/vmalloc.c             | 158 ++++++++++++++++++++++++++++++---------
 9 files changed, 169 insertions(+), 58 deletions(-)

-- 
2.47.3