diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2023-01-08 17:44:24 +0200 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-01-23 11:26:29 -0700 |
| commit | 0886196ca8810c5b1f5097b71c4bc0df40b10208 (patch) | |
| tree | ce3b10ea0f808d9a692bcc057b18fd84031fdd97 /drivers/vfio/virqfd.c | |
| parent | 83ff6095ecf8bafd095a921a2267227519f510f8 (diff) | |
vfio: Use GFP_KERNEL_ACCOUNT for userspace persistent allocations
Use GFP_KERNEL_ACCOUNT for userspace persistent allocations.
The GFP_KERNEL_ACCOUNT option lets the memory allocator know that this
is untrusted allocation triggered from userspace and should be a subject
of kmem accounting, and as such it is controlled by the cgroup
mechanism.
The way to find the relevant allocations was for example to look at the
close_device function and trace back all the kfrees to their
allocations.
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20230108154427.32609-4-yishaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/virqfd.c')
| -rw-r--r-- | drivers/vfio/virqfd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/vfio/virqfd.c b/drivers/vfio/virqfd.c index 497a17b37865..29c564b7a6e1 100644 --- a/drivers/vfio/virqfd.c +++ b/drivers/vfio/virqfd.c @@ -112,7 +112,7 @@ int vfio_virqfd_enable(void *opaque, int ret = 0; __poll_t events; - virqfd = kzalloc(sizeof(*virqfd), GFP_KERNEL); + virqfd = kzalloc(sizeof(*virqfd), GFP_KERNEL_ACCOUNT); if (!virqfd) return -ENOMEM; |