Virtualized swap stalls on cgroup memory.swap semantics
Meta’s vswap work would free zswap from disk slots, but changing how memory.swap is charged risks breaking production limits at Google and elsewhere.
By kexec#cgroup
BPF gains common cgroup attach path for struct_ops maps
A bpf-next series reuses the existing bpf_link cgroup model so groups of BPF programs can share attach, ordering, and query semantics, with TCP sock ops as the first consumer.
By kexecWriteback drain stalls Tasks-RCU, panics hosts on BPF detach
Cgroup writeback cleanup can run for minutes without a Tasks-RCU quiescent state on lazy-preempt kernels, blocking ftrace and BPF unlinks until the hung-task detector fires.
By kexecBPF gains kfunc to drive proactive memcg reclaim
A sleepable SYSCALL-only helper lets policy programs reclaim from chosen cgroups without writing memory.reclaim.
By kexecLinux 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 oopsBPF cgroup link update fixed for stack out-of-bounds write
Replacement programs were matched only by type, so incompatible sock_addr and LSM hooks could clobber adjacent stack state.
By kexec