Kernel drivers that pin pages should account these pages against
either user->locked_vm and/or mm->pinned_vm and fail the pinning if
RLIMIT_MEMLOCK is exceeded and CAP_IPC_LOCK isn't held.
Currently drivers open-code this accounting and use various methods to
update the atomic variables and check
On 24.01.23 06:42, Alistair Popple wrote:
Kernel drivers that pin pages should account these pages against
either user->locked_vm or mm->pinned_vm and fail the pinning if
RLIMIT_MEMLOCK is exceeded and CAP_IPC_LOCK isn't held.
Currently drivers open-code this accounting and use various methods t
Jason Gunthorpe writes:
> On Tue, Jan 24, 2023 at 04:42:30PM +1100, Alistair Popple wrote:
>> +/**
>> + * enum vm_account_flags - Determine how pinned/locked memory is accounted.
>> + * @VM_ACCOUNT_TASK: Account pinned memory to mm->pinned_vm.
>> + * @VM_ACCOUNT_BYPASS: Don't enforce rlimit on
On Tue, Jan 24, 2023 at 04:42:30PM +1100, Alistair Popple wrote:
> +/**
> + * enum vm_account_flags - Determine how pinned/locked memory is accounted.
> + * @VM_ACCOUNT_TASK: Account pinned memory to mm->pinned_vm.
> + * @VM_ACCOUNT_BYPASS: Don't enforce rlimit on any charges.
> + * @VM_ACCOUNT_USE
> +/**
> + * vm_account_init - Initialise a new struct vm_account.
> + * @vm_account: pointer to uninitialised vm_account.
> + * @task: task to charge against.
> + * @user: user to charge against. Must be non-NULL for VM_ACCOUNT_USER.
> + * @flags: flags to use when charging to vm_account.
> + *
>
Kernel drivers that pin pages should account these pages against
either user->locked_vm or mm->pinned_vm and fail the pinning if
RLIMIT_MEMLOCK is exceeded and CAP_IPC_LOCK isn't held.
Currently drivers open-code this accounting and use various methods to
update the atomic variables and check agai
