From 55324e46eb8b886ecd08c9a089d3a694c705b3b0 Mon Sep 17 00:00:00 2001 From: Suren Baghdasaryan Date: Mon, 27 Feb 2023 09:36:24 -0800 Subject: mm: add FAULT_FLAG_VMA_LOCK flag Add a new flag to distinguish page faults handled under protection of per-vma lock. [surenb@google.com: document FAULT_FLAG_VMA_LOCK flag] Link: https://lkml.kernel.org/r/20230301022720.1380780-2-surenb@google.com Link: https://lore.kernel.org/all/20230301113648.7c279865@canb.auug.org.au/ Link: https://lkml.kernel.org/r/20230227173632.3292573-26-surenb@google.com Signed-off-by: Suren Baghdasaryan Reviewed-by: Laurent Dufour Cc: Dan Carpenter Cc: David Hildenbrand Cc: David Howells Cc: Hugh Dickins Cc: Jason Gunthorpe Cc: Liam R. Howlett Cc: Mathieu Desnoyers Cc: Matthew Wilcox Cc: Pavel Tatashin Cc: Yu Zhao Signed-off-by: Andrew Morton --- include/linux/mm.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include/linux/mm.h') diff --git a/include/linux/mm.h b/include/linux/mm.h index 0619f9fa7581..1876825d6700 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -479,7 +479,8 @@ 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 -- cgit v1.2.3