Re: [PATCH] virtiofs: Enable multiple request queues
From: Connor Kuehl <hidden>
Date: 2021-05-08 12:22:39
Also in:
linux-fsdevel, lkml
On 5/7/21 5:15 PM, Connor Kuehl wrote:
quoted hunk ↗ jump to hunk
Distribute requests across the multiqueue complex automatically based on the IRQ affinity. Suggested-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Connor Kuehl <redacted> --- fs/fuse/virtio_fs.c | 30 ++++++++++++++++++++++++------ 1 file changed, 24 insertions(+), 6 deletions(-)diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c index bcb8a02e2d8b..dcdc8b7b1ad5 100644 --- a/fs/fuse/virtio_fs.c +++ b/fs/fuse/virtio_fs.c@@ -30,6 +30,10 @@ static DEFINE_MUTEX(virtio_fs_mutex); static LIST_HEAD(virtio_fs_instances); +struct virtio_fs_vq; + +DEFINE_PER_CPU(struct virtio_fs_vq *, this_cpu_fsvq);[..] + + for_each_cpu(cpu, mask) { + struct virtio_fs_vq **cpu_vq = per_cpu_ptr(&this_cpu_fsvq, cpu); + *cpu_vq = &fs->vqs[i]; + } + }
Hmm, actually, it's just occurred to me that the per-CPU state could be problematic with multiple virtio-fs mounts. I'll workshop this some more. Connor _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization