Re: [RFC PATCH RESEND 18/28] mm: add FAULT_FLAG_VMA_LOCK flag
From: Laurent Dufour <hidden>
Date: 2022-09-09 14:26:45
Also in:
linux-arm-kernel, linux-mm, lkml
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 <surenb@google.com>
FWIW, Reviewed-by: Laurent Dufour <redacted>
quoted hunk ↗ jump to hunk
--- 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'sdiff --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;