Le 01/09/2022 à 19:35, Suren Baghdasaryan a écrit :
> Add a new flag to distinguish page faults handled under protection of
> per-vma lock.
>
> Signed-off-by: Suren Baghdasaryan <sur...@google.com>
FWIW,
Reviewed-by: Laurent Dufour <laurent.duf...@fr.ibm.com>
> ---
> include/linux/mm.h | 3 ++-
> include/linux/mm_types.h | 1 +
> 2 files changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 0d9c1563c354..7c3190eaabd7 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -466,7 +466,8 @@ static inline bool fault_flag_allow_retry_first(enum
> fault_flag flags)
> { FAULT_FLAG_USER, "USER" }, \
> { FAULT_FLAG_REMOTE, "REMOTE" }, \
> { FAULT_FLAG_INSTRUCTION, "INSTRUCTION" }, \
> - { FAULT_FLAG_INTERRUPTIBLE, "INTERRUPTIBLE" }
> + { FAULT_FLAG_INTERRUPTIBLE, "INTERRUPTIBLE" }, \
> + { FAULT_FLAG_VMA_LOCK, "VMA_LOCK" }
>
> /*
> * vm_fault is filled by the pagefault handler and passed to the vma's
> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
> index 6a03f59c1e78..36562e702baf 100644
> --- a/include/linux/mm_types.h
> +++ b/include/linux/mm_types.h
> @@ -886,6 +886,7 @@ enum fault_flag {
> FAULT_FLAG_INTERRUPTIBLE = 1 << 9,
> FAULT_FLAG_UNSHARE = 1 << 10,
> FAULT_FLAG_ORIG_PTE_VALID = 1 << 11,
> + FAULT_FLAG_VMA_LOCK = 1 << 12,
> };
>
> typedef unsigned int __bitwise zap_flags_t;
