The quilt patch titled
Subject: mm: add FAULT_FLAG_VMA_LOCK flag
has been removed from the -mm tree. Its filename was
mm-add-fault_flag_vma_lock-flag.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Subject: mm: add FAULT_FLAG_VMA_LOCK flag
Date: Mon, 27 Feb 2023 09:36:24 -0800
Add a new flag to distinguish page faults handled under protection of
per-vma lock.
[surenb@xxxxxxxxxx: document FAULT_FLAG_VMA_LOCK flag]
Link: https://lkml.kernel.org/r/20230301022720.1380780-2-surenb@xxxxxxxxxx
Link: https://lore.kernel.org/all/20230301113648.7c279865@xxxxxxxxxxxxxxxx/
Link: https://lkml.kernel.org/r/20230227173632.3292573-26-surenb@xxxxxxxxxx
Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Reviewed-by: Laurent Dufour <laurent.dufour@xxxxxxxxxx>
Cc: Dan Carpenter <error27@xxxxxxxxx>
Cc: David Hildenbrand <david@xxxxxxxxxx>
Cc: David Howells <dhowells@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Jason Gunthorpe <jgg@xxxxxxxx>
Cc: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
Cc: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Pavel Tatashin <pasha.tatashin@xxxxxxxxxx>
Cc: Yu Zhao <yuzhao@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/mm.h | 3 ++-
include/linux/mm_types.h | 2 ++
2 files changed, 4 insertions(+), 1 deletion(-)
--- a/include/linux/mm.h~mm-add-fault_flag_vma_lock-flag
+++ a/include/linux/mm.h
@@ -479,7 +479,8 @@ static inline bool fault_flag_allow_retr
{ 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
--- a/include/linux/mm_types.h~mm-add-fault_flag_vma_lock-flag
+++ a/include/linux/mm_types.h
@@ -1049,6 +1049,7 @@ typedef struct {
* mapped after the fault.
* @FAULT_FLAG_ORIG_PTE_VALID: whether the fault has vmf->orig_pte cached.
* We should only access orig_pte if this flag set.
+ * @FAULT_FLAG_VMA_LOCK: The fault is handled under VMA lock.
*
* About @FAULT_FLAG_ALLOW_RETRY and @FAULT_FLAG_TRIED: we can specify
* whether we would allow page faults to retry by specifying these two
@@ -1086,6 +1087,7 @@ 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;
_
Patches currently in -mm which might be from surenb@xxxxxxxxxx are
