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SubjectRe: [PATCH 2/2] ipc: use kmalloc for msg_queue and shmid_kernel
On Wed 28-04-21 08:15:10, Vasily Averin wrote:
> On 4/26/21 1:25 PM, Michal Hocko wrote:
> > Using kvmalloc for sub page size objects is suboptimal because kmalloc
> > can easily fallback into vmalloc under memory pressure and smaller
> > objects would fragment memory. Therefore replace kvmalloc by a simple
> > kmalloc.
>
> I think you're wrong here:
> kvmalloc can failback to vmalloc for size > PAGE_SIZE only

You are right. My bad. My memory failed on me. Sorry about the
confusion.
--
Michal Hocko
SUSE Labs

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