git: 6a1de1912d52 - main - tmpfs.5: Document option nomtime

The branch main has been updated by 0mp:

URL: https://cgit.FreeBSD.org/src/commit/?id=6a1de1912d5216512a73dd97c4ee454d44b8fffb

commit 6a1de1912d5216512a73dd97c4ee454d44b8fffb
Author:     Mateusz Piotrowski <0mp@FreeBSD.org>
AuthorDate: 2023-09-18 19:51:50 +0000
Commit:     Mateusz Piotrowski <0mp@FreeBSD.org>
CommitDate: 2023-09-18 21:59:10 +0000

    tmpfs.5: Document option nomtime
    
    Fixes:  c1e84733ac7e tmpfs: add nomtime mount option,
    MFC after:      7 days
---
 share/man/man5/tmpfs.5 | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/share/man/man5/tmpfs.5 b/share/man/man5/tmpfs.5
index c442b868dd1d..8fff1c15815d 100644
--- a/share/man/man5/tmpfs.5
+++ b/share/man/man5/tmpfs.5
@@ -127,6 +127,13 @@ The default is the maximum possible value.
 .It Cm mode
 Set the mode (in octal notation) of the root inode of the file system.
 The default is the mount point's mode.
+.It Cm nomtime
+Disable the tracking of mtime updates caused by writes to the
+shared mapped areas backed by
+.Nm
+files.
+This option removes periodic scans,
+which downgrade read-write-mapped pages to read-only to note the writes.
 .It Cm nonc
 Do not use namecache to resolve names to files for the created mount.
 This saves memory, but currently might impair scalability for highly