[PATCH] docs: proc: update VmFlags documentation in smaps

[PATCH] docs: proc: update VmFlags documentation in smaps

[wangfushuai]

Remove outdated VM_DENYWRITE("dw") reference and add missing
VM_LOCKONFAULT("lf") and VM_UFFD_MINOR("ui") flags.

Signed-off-by: wangfushuai <wangfushuai@baidu.com>
---
 Documentation/filesystems/proc.rst | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/filesystems/proc.rst b/Documentation/filesystems/proc.rst
index 2a17865dfe39..e48dabab2a4a 100644
--- a/Documentation/filesystems/proc.rst
+++ b/Documentation/filesystems/proc.rst
@@ -584,7 +584,6 @@ encoded manner. The codes are the following:
     ms    may share
     gd    stack segment growns down
     pf    pure PFN range
-    dw    disabled write to the mapped file
     lo    pages are locked in memory
     io    memory mapped I/O area
     sr    sequential read advise provided
@@ -607,8 +606,10 @@ encoded manner. The codes are the following:
     mt    arm64 MTE allocation tags are enabled
     um    userfaultfd missing tracking
     uw    userfaultfd wr-protect tracking
+    ui    userfaultfd minor fault
     ss    shadow/guarded control stack page
     sl    sealed
+    lf    lock on fault pages
     ==    =======================================
 
 Note that there is no guarantee that every flag and associated mnemonic will
-- 
2.36.1

Re: [PATCH] docs: proc: update VmFlags documentation in smaps

[Andrew Morton]

On Sat, 7 Jun 2025 13:03:30 -0400 Tal Zussman <tz2294@columbia.edu> wrote:

> On Sat, Jun 7, 2025 at 11:36 AM wangfushuai <wangfushuai@baidu.com> wrote:
> > Remove outdated VM_DENYWRITE("dw") reference and add missing
> > VM_LOCKONFAULT("lf") and VM_UFFD_MINOR("ui") flags.
> 
> VM_DROPPABLE ("dp") is also missing, would be nice to add it as well.
> 

Thanks.  How's this?


--- a/Documentation/filesystems/proc.rst~docs-proc-update-vmflags-documentation-in-smaps-fix
+++ a/Documentation/filesystems/proc.rst
@@ -610,6 +610,7 @@ encoded manner. The codes are the follow
     ss    shadow/guarded control stack page
     sl    sealed
     lf    lock on fault pages
+    dp    always lazily freeable mapping
     ==    =======================================
 
 Note that there is no guarantee that every flag and associated mnemonic will
_

Re: [PATCH] docs: proc: update VmFlags documentation in smaps

[wangfushuai]

Thanks for the review. I'll add 'dp' info send v2 shortly.

--
Regards,
Wang