Dongli Zhang 489084dd3f vhost scsi: alloc vhost_scsi with kvzalloc() to avoid delay ... The size of 'struct vhost_scsi' is order-10 (~2.3MB). It may take long time delay by kzalloc() to compact memory pages by retrying multiple times when there is a lack of high-order pages. As a result, there is latency to create a VM (with vhost-scsi) or to hotadd vhost-scsi-based storage. The prior commit 595cb75498 ("vhost/scsi: use vmalloc for order-10 allocation") prefers to fallback only when really needed, while this patch allocates with kvzalloc() with __GFP_NORETRY implicitly set to avoid retrying memory pages compact for multiple times. The __GFP_NORETRY is implicitly set if the size to allocate is more than PAGE_SZIE and when __GFP_RETRY_MAYFAIL is not explicitly set. Cc: Aruna Ramakrishna <aruna.ramakrishna@oracle.com> Cc: Joe Jin <joe.jin@oracle.com> Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com> Link: https://lore.kernel.org/r/20210123080853.4214-1-dongli.zhang@oracle.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com>		2021-02-23 07:52:56 -05:00
..
iotlb.c	vhost: Fix documentation	2020-09-24 05:54:36 -04:00
Kconfig	vhost_vdpa: implement IRQ offloading in vhost_vdpa	2020-08-05 11:08:42 -04:00
Makefile	vhost: introduce vDPA-based backend	2020-04-02 10:41:40 -04:00
net.c	vhost_net: fix ubuf refcount incorrectly when sendmsg fails	2021-01-04 13:18:52 -08:00
scsi.c	vhost scsi: alloc vhost_scsi with kvzalloc() to avoid delay	2021-02-23 07:52:56 -05:00
test.c	tools/virtio: Add --reset	2020-06-22 12:34:21 -04:00
test.h	tools/virtio: Add --reset	2020-06-22 12:34:21 -04:00
vdpa.c	vhost_vdpa: switch to vmemdup_user()	2020-12-18 16:14:28 -05:00
vhost.c	vhost: add helper to check if a vq has been setup	2020-11-15 17:30:54 -05:00
vhost.h	vhost: add helper to check if a vq has been setup	2020-11-15 17:30:54 -05:00
vringh.c	vhost: vringh: use krealloc_array()	2020-12-15 12:13:37 -08:00
vsock.c	vhost/vsock: add IOTLB API support	2020-12-27 05:49:01 -05:00