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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-01-21 00:32:16 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-01-21 00:32:16 +0300 |
| commit | c25f2fb1f469deaed2df8db524d91f3321a0f816 (patch) | |
| tree | e07a4343b060d8dc081b6a772430c2d8e2f0bd3b /Documentation | |
| parent | c03e9c42ae8f9be76a0cf55ef3f88663f0f6a63a (diff) | |
| parent | 16aca2c98a6fdf071e5a1a765a295995d7c7e346 (diff) | |
| download | linux-c25f2fb1f469deaed2df8db524d91f3321a0f816.tar.xz | |
Merge tag 'mm-hotfixes-stable-2026-01-20-13-09' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
- A patch series from David Hildenbrand which fixes a few things
related to hugetlb PMD sharing
- The remainder are singletons, please see their changelogs for details
* tag 'mm-hotfixes-stable-2026-01-20-13-09' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm: restore per-memcg proactive reclaim with !CONFIG_NUMA
mm/kfence: fix potential deadlock in reboot notifier
Docs/mm/allocation-profiling: describe sysctrl limitations in debug mode
mm: do not copy page tables unnecessarily for VM_UFFD_WP
mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables using mmu_gather
mm/rmap: fix two comments related to huge_pmd_unshare()
mm/hugetlb: fix two comments related to huge_pmd_unshare()
mm/hugetlb: fix hugetlb_pmd_shared()
mm: remove unnecessary and incorrect mmap lock assert
x86/kfence: avoid writing L1TF-vulnerable PTEs
mm/vma: do not leak memory when .mmap_prepare swaps the file
migrate: correct lock ordering for hugetlb file folios
panic: only warn about deprecated panic_print on write access
fs/writeback: skip AS_NO_DATA_INTEGRITY mappings in wait_sb_inodes()
mm: take into account mm_cid size for mm_struct static definitions
mm: rename cpu_bitmap field to flexible_array
mm: add missing static initializer for init_mm::mm_cid.lock
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/sysctl/vm.rst | 4 | ||||
| -rw-r--r-- | Documentation/mm/allocation-profiling.rst | 10 |
2 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/admin-guide/sysctl/vm.rst b/Documentation/admin-guide/sysctl/vm.rst index 4d71211fdad8..245bf6394935 100644 --- a/Documentation/admin-guide/sysctl/vm.rst +++ b/Documentation/admin-guide/sysctl/vm.rst @@ -494,6 +494,10 @@ memory allocations. The default value depends on CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT. +When CONFIG_MEM_ALLOC_PROFILING_DEBUG=y, this control is read-only to avoid +warnings produced by allocations made while profiling is disabled and freed +when it's enabled. + memory_failure_early_kill ========================= diff --git a/Documentation/mm/allocation-profiling.rst b/Documentation/mm/allocation-profiling.rst index 316311240e6a..5389d241176a 100644 --- a/Documentation/mm/allocation-profiling.rst +++ b/Documentation/mm/allocation-profiling.rst @@ -33,6 +33,16 @@ Boot parameter: sysctl: /proc/sys/vm/mem_profiling + 1: Enable memory profiling. + + 0: Disable memory profiling. + + The default value depends on CONFIG_MEM_ALLOC_PROFILING_ENABLED_BY_DEFAULT. + + When CONFIG_MEM_ALLOC_PROFILING_DEBUG=y, this control is read-only to avoid + warnings produced by allocations made while profiling is disabled and freed + when it's enabled. + Runtime info: /proc/allocinfo |