Linux makes per-VMA locks unconditional on all configs
The change lets binder and TCP drop mmap_lock fallbacks, and Andrew Morton has queued the series for testing.
By oops#memory-management
Linux virtual swap decouples zswap pages from disk slots
Nhat Pham's v4 series adds a persistent virtual swap device so compressed and zero-filled pages no longer reserve physical swap capacity.
By oopsMeta's 57-patch THP collapse rewrite meets kernel pushback
A migration-based engine aimed at mTHP on large base pages is told to land smaller foundations first, while AI-polished list replies draw separate fire.
By oopsLinux swap faults stop spinning forever on bad entries
A Meta engineer’s patches rate-limit the log spam and turn permanent swap PTE corruption into SIGBUS instead of an infinite retry.
By oopsLinux makes per-VMA locks unconditional across all configs
A Hansen/Baghdasaryan series drops architecture guards so binder and TCP paths can stop falling back to mmap_lock.
By kexecKernel fix corrects wrong TLB flush in page table reclaim
Direct reclaim after MADV_DONTNEED could free a page table while leaving a stale paging-structure cache entry.
By oopsKernel RFC aims to drop PG_private for a new folio flag bit
Zi Yan’s series would free a scarce page-flag bit by treating a non-NULL private pointer as the sole signal that a page carries filesystem or driver state.
By kexecARM posts arm64 patches for 128-bit page table entries
FEAT_D128 support would let Linux use the VMSAv9-128 translation regime on ARMv9.3 hardware.
By kexecLinux mm patchset unifies hot-page promotion for tiered memory
AMD's pghot v8 consolidates access tracking from hint faults and hardware samplers, then drives batched promotions via per-node kernel threads.
By kexecKernel keeps mTHP on when PMD-sized huge pages are missing
A new page-table helper lets multi-size THP stay available on CPUs that cannot back traditional PMD leaves.
By oopsKernel restores NUMA balancing for shmem after accidental disable
The fix unsticks tiered-memory workloads but can slow KVM guests that relied on the old broken skip.
By oopsKernel fix stops reclaim storms under vm.defrag_mode
Non-movable allocations no longer thrash swap when defrag_mode cannot claim free pages from movable blocks.
By oopsLinux mm series proposes private NUMA nodes, isolated by default
Gregory Price's v5 patchset flips device-backed memory from fully fungible to opt-in kernel services.
By kexec