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| author | Askar Safin <safinaskar@zohomail.com> | 2025-08-26 08:32:26 +0000 |
|---|---|---|
| committer | Alejandro Colomar <alx@kernel.org> | 2025-09-06 22:21:08 +0200 |
| commit | ac2f7481d25104475ee42c83e514847b60ee4bc5 (patch) | |
| tree | 87dccb3dac0423c89df3b323163489a248e54600 | |
| parent | c27f2edf6a73db7b01418cb0cd7c5359eebb3081 (diff) | |
| download | man-pages-ac2f7481d25104475ee42c83e514847b60ee4bc5.tar.gz | |
man/man2/mount.2: Expand and clarify docs for MS_REMOUNT | MS_BIND
My edit is based on experiments and reading Linux code.
Signed-off-by: Askar Safin <safinaskar@zohomail.com>
Message-ID: <20250826083227.2611457-2-safinaskar@zohomail.com>
Reviewed-by: Aleksa Sarai <cyphar@cyphar.com>
[alx: wfix]
Signed-off-by: Alejandro Colomar <alx@kernel.org>
| -rw-r--r-- | man/man2/mount.2 | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/man/man2/mount.2 b/man/man2/mount.2 index 5d83231f92..9cb69a1c75 100644 --- a/man/man2/mount.2 +++ b/man/man2/mount.2 @@ -404,8 +404,23 @@ flag can be used with .B MS_BIND to modify only the per-mount-point flags. .\" See https://lwn.net/Articles/281157/ -This is particularly useful for setting or clearing the "read-only" -flag on a mount without changing the underlying filesystem. +This is particularly useful +for setting or clearing the "read-only" flag on a mount +without changing the filesystem parameters of the underlying filesystem. +The +.I data +argument is ignored. +The existing per-mount-point flags of the mount point +are cleared +and replaced with those in +.IR mountflags . +This means that +if you wish to preserve +any existing per-mount-point flags, +you need to include them in +.IR mountflags , +along with the per-mount-point flags you wish to set +(or with the flags you wish to clear missing). Specifying .I mountflags as: @@ -416,8 +431,9 @@ MS_REMOUNT | MS_BIND | MS_RDONLY .EE .in .P -will make access through this mountpoint read-only, without affecting -other mounts. +will make access through this mount point read-only +(clearing all other per-mount-point flags), +without affecting other mounts of this filesystem. .\" .SS Creating a bind mount If |