vmalloc · Maintained

Maintainers

• M Andrew Morton <akpm@linux-foundation.org>
• M Uladzislau Rezki <urezki@gmail.com>

Paths

• F include/linux/vmalloc.h
• F mm/vmalloc.c
• F lib/test_vmalloc.c

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v6 0/6] mm/vmalloc: Speed up ioremap, vmalloc and vmap with contiguous memory
  2026-07-09 07:39 · 4 replies in 7d · Wen Jiang <hidden>
• HOTtoday [PATCH v2 0/3] mm: split a couple of headers from internal.h
  2026-07-09 10:00 · 1 reply in 7d · "Mike Rapoport (Microsoft)" <rppt@kernel.org>
• HOTtoday [PATCH 0/3] mm: split a couple of headers from internal.h
  2026-07-09 06:42 · 1 reply in 7d · "Mike Rapoport (Microsoft)" <rppt@kernel.org>
• WARM3d [PATCH v5 0/6] mm/vmalloc: Speed up ioremap, vmalloc and vmap with contiguous memory
  2026-07-06 08:44 · 4 replies in 7d · Wen Jiang <hidden>

Active reviewers (last 30 days)

• Xueyuan Chen <hidden>
  12 attestations (12 Tested-by) · last on 2026-07-09
• Dev Jain <dev.jain@arm.com>
  5 attestations (3 Co-developed-by, 2 Reviewed-by) · last on 2026-07-09
• Leo Yan <leo.yan@arm.com>
  4 attestations (4 Tested-by) · last on 2026-07-09
• Uladzislau Rezki (Sony) <urezki@gmail.com>
  4 attestations (4 Reviewed-by) · last on 2026-07-09
• Kevin Brodsky <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-06-18
• David Hildenbrand (Arm) <david@kernel.org>
  2 attestations (2 Acked-by) · last on 2026-06-18
• Muchun Song <muchun.song@linux.dev>
  1 attestation (1 Acked-by) · last on 2026-07-09
• Shivam Kalra <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-06-18
• Dennis Zhou <dennis@kernel.org>
  1 attestation (1 Acked-by) · last on 2026-06-18

Recent patches

Most-recent 30 patches in this subsystem on linux-mm (capped at 30), ordered by date desc.

• HOTtoday REVIEWED: 3 (3M) [PATCH v2 3/3] mm: split out vmalloc declarations from internal.h
  2026-07-09 · "Mike Rapoport (Microsoft)" <rppt@kernel.org>
• DORMANTno replies REVIEWED: 5 (4M) [PATCH v6 6/6] mm/vmalloc: align vm_area so vmap() can batch mappings
  2026-07-09 · Wen Jiang <hidden>
• HOTtoday REVIEWED: 2 (1M) [PATCH v6 5/6] mm/vmalloc: map contiguous pages in batches for vmap() if possible
  2026-07-09 · Wen Jiang <hidden>
• HOTtoday REVIEWED: 3 (2M) [PATCH v6 4/6] mm/vmalloc: Extend page table walk to support larger page_shift sizes and eliminate page table rewalk
  2026-07-09 · Wen Jiang <hidden>
• HOTtoday REVIEWED: 6 (5M) [PATCH v6 3/6] mm/vmalloc: Extract vmap_set_ptes() to consolidate PTE mapping logic
  2026-07-09 · Wen Jiang <hidden>
• HOTtoday [PATCH 3/3] mm: split out vmalloc declarations from internal.h
  2026-07-09 · "Mike Rapoport (Microsoft)" <rppt@kernel.org>
• WARM3d REVIEWED: 1 (0M) [PATCH v5 6/6] mm/vmalloc: align vm_area so vmap() can batch mappings
  2026-07-06 · Wen Jiang <hidden>
• WARM3d REVIEWED: 1 (0M) [PATCH v5 4/6] mm/vmalloc: Extend page table walk to support larger page_shift sizes and eliminate page table rewalk
  2026-07-06 · Wen Jiang <hidden>
• WARM3d REVIEWED: 1 (0M) [PATCH v5 3/6] mm/vmalloc: Extract vmap_set_ptes() to consolidate PTE mapping logic
  2026-07-06 · Wen Jiang <hidden>
• WARM3d REVIEWED: 1 (0M) [PATCH v5 5/6] mm/vmalloc: map contiguous pages in batches for vmap() if possible
  2026-07-06 · Wen Jiang <hidden>
• COOLING7d [PATCH v2] mm/vmalloc: widen guard region to defeat ENTER-based stack pivot
  2026-06-29 · Xiang Mei <hidden>
• COOLING9d [PATCH] mm/vmalloc: widen guard region to defeat ENTER-based stack pivot
  2026-06-26 · Xiang Mei <hidden>
• COOLING8d [PATCH v3 3/7] mm: Use mutable list iterators
  2026-06-22 · Kaitao Cheng <hidden>
• COLD16d REVIEWED: 16 (15M) [PATCH -next v4 1/4] mm: Make lazy MMU mode context-aware
  2026-06-18 · Alexander Gordeev <agordeev@linux.ibm.com>
• COLD20d IN LINUX-NEXT: 5 (4M) [PATCH v4 1/4] mm/vmalloc: honor GFP constraints in pcpu_get_vm_areas()
  2026-06-18 · Kaitao Cheng <hidden>
• WARM3d REVIEWED: 1 (0M) [PATCH v4 6/6] mm/vmalloc: align vm_area so vmap() can batch mappings
  2026-06-18 · Wen Jiang <hidden>
• WARM3d REVIEWED: 1 (0M) [PATCH v4 5/6] mm/vmalloc: map contiguous pages in batches for vmap() if possible
  2026-06-18 · Wen Jiang <hidden>
• WARM3d REVIEWED: 1 (0M) [PATCH v4 4/6] mm/vmalloc: Extend page table walk to support larger page_shift sizes and eliminate page table rewalk
  2026-06-18 · Wen Jiang <hidden>
• WARM3d REVIEWED: 1 (0M) [PATCH v4 3/6] mm/vmalloc: Extract vmap_set_ptes() to consolidate PTE mapping logic
  2026-06-18 · Wen Jiang <hidden>
• COLD22d REVIEWED: 16 (15M) [PATCH v3 1/7] mm: Make lazy MMU mode context-aware
  2026-06-16 · Alexander Gordeev <agordeev@linux.ibm.com>
• COOLING12d [PATCH RFC 12/12] mm/vmalloc: harden bump-allocator alloc/free against UBSAN array bounds
  2026-06-13 · Pranjal Arya <hidden>
• COOLING12d [PATCH RFC 11/12] mm/vmalloc: O(1) lookup of cached vmap_areas with bounded fast-reject
  2026-06-13 · Pranjal Arya <hidden>
• COOLING12d [PATCH RFC 10/12] mm/vmalloc: per-CPU caching of free ranges from the maple_tree allocator
  2026-06-13 · Pranjal Arya <hidden>
• COOLING12d [PATCH RFC 09/12] mm/vmalloc: collapse busy-tree find-then-unlink into a single mas_erase
  2026-06-13 · Pranjal Arya <hidden>
• COOLING12d [PATCH RFC 08/12] mm/vmalloc: track lazy-purge queue as a list_head
  2026-06-13 · Pranjal Arya <hidden>
• COOLING12d [PATCH RFC 07/12] mm/vmalloc: consolidate occupied tree as authoritative index on hot path
  2026-06-13 · Pranjal Arya <hidden>
• COOLING12d [PATCH RFC 06/12] mm/vmalloc: tighten alloc/free hot paths
  2026-06-13 · Pranjal Arya <hidden>
• COOLING12d [PATCH RFC 05/12] mm/vmalloc: tighten failure handling under memory pressure
  2026-06-13 · Pranjal Arya <hidden>
• COOLING12d [PATCH RFC 04/12] mm/vmalloc: finalize maple-only indexing and shrink struct vmap_area
  2026-06-13 · Pranjal Arya <hidden>
• COOLING12d [PATCH RFC 03/12] mm/vmalloc: convert free, purge, and pcpu paths to maple_tree
  2026-06-13 · Pranjal Arya <hidden>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• DORMANTno replies REVIEWED: 3 (3M) FAILED: Patch "mm/vmalloc: prevent RCU stalls in kasan_release_vmalloc_node" failed to apply to 6.12-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by
• DORMANTno replies REVIEWED: 3 (3M) FAILED: Patch "mm/vmalloc: prevent RCU stalls in kasan_release_vmalloc_node" failed to apply to 6.6-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by
• DORMANTno replies REVIEWED: 3 (3M) FAILED: Patch "mm/vmalloc: prevent RCU stalls in kasan_release_vmalloc_node" failed to apply to 6.1-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by
• DORMANTno replies REVIEWED: 3 (3M) FAILED: Patch "mm/vmalloc: prevent RCU stalls in kasan_release_vmalloc_node" failed to apply to 5.15-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by
• DORMANTno replies REVIEWED: 3 (3M) FAILED: Patch "mm/vmalloc: prevent RCU stalls in kasan_release_vmalloc_node" failed to apply to 5.10-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by
• STALE119d REVIEWED: 3 (3M) [PATCH] vmalloc: support __GFP_RETRY_MAYFAIL and __GFP_NORETRY
  2026-03-02 · "Uladzislau Rezki (Sony)" <urezki@gmail.com> · 1 Tested-by
• STALE108d REVIEWED: 12 (12M) [PATCH v6 1/6] mm/vmalloc: extract vm_area_free_pages() helper from vfree()
  2026-03-21 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org> · 1 Reviewed-by
• STALE105d REVIEWED: 12 (12M) [PATCH v7 1/6] mm/vmalloc: extract vm_area_free_pages() helper from vfree()
  2026-03-24 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org> · 1 Reviewed-by
• STALE99d REVIEWED: 12 (12M) [PATCH v8 1/6] mm/vmalloc: extract vm_area_free_pages() helper from vfree()
  2026-03-27 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org> · 1 Reviewed-by
• STALE93d REVIEWED: 15 (15M) [PATCH v9 1/4] mm/vmalloc: extract vm_area_free_pages() helper from vfree()
  2026-04-01 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org> · 2 Reviewed-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE178d [RESEND RFC PATCH 2/2] arm64/mm: Enable huge-vmalloc by default
  2025-12-12 · Dev Jain <dev.jain@arm.com>
• STALE133d [PATCH v1 1/2] mm/vmalloc: export clear_vm_uninitialized_flag()
  2026-02-25 · Pasha Tatashin <pasha.tatashin@soleen.com>
• STALE128d [PATCH 1/2] mm/vmalloc: extract vmalloc_free_pages() helper from vfree()
  2026-03-02 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org>
• STALE119d [PATCH v2 2/2] mm/vmalloc: free unused pages on vrealloc() shrink
  2026-03-04 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org>
• STALE114d [PATCH v4 1/3] mm/vmalloc: extract vm_area_free_pages() helper from vfree()
  2026-03-14 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org>
• STALE114d [PATCH v4 3/3] lib/test_vmalloc: add vrealloc test case
  2026-03-14 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org>
• STALE108d [PATCH v5 3/3] lib/test_vmalloc: add vrealloc test case
  2026-03-17 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org>
• STALE108d [PATCH v6 2/6] mm/vmalloc: fix vrealloc() grow-in-place check
  2026-03-21 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org>
• STALE108d [PATCH v6 3/6] mm/vmalloc: zero newly exposed memory on vrealloc() grow
  2026-03-21 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org>
• STALE108d [PATCH v6 6/6] lib/test_vmalloc: add vrealloc test case
  2026-03-21 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org>