applied: [PATCH proxmox v5 03/13] shared-memory: expose msync to flush in-memory contents to filesystem

["Fabian Grünbichler" <f.gruenbichler@proxmox.com>]

On March 11, 2026 2:07 pm, Christian Ebner wrote:
> Exposes proxmox_sys::mmap::Mmap::msync() to allow flushing all
> in-memory contents to the underlying mmapped file. Without this, it
> is not guaranteed that contents are persisted until unmapping, which
> can lead to data loss in case of host crashes or OOM situations.
> 
> Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
> ---
>  proxmox-shared-memory/src/lib.rs | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/proxmox-shared-memory/src/lib.rs b/proxmox-shared-memory/src/lib.rs
> index da057366..cd67c63a 100644
> --- a/proxmox-shared-memory/src/lib.rs
> +++ b/proxmox-shared-memory/src/lib.rs
> @@ -12,7 +12,7 @@ use std::path::Path;
>  use anyhow::{bail, format_err, Error};
>  use nix::errno::Errno;
>  use nix::fcntl::OFlag;
> -use nix::sys::mman::{MapFlags, ProtFlags};
> +use nix::sys::mman::{MapFlags, MsFlags, ProtFlags};
>  use nix::sys::stat::Mode;
>  
>  use proxmox_sys::error::SysError;
> @@ -230,6 +230,11 @@ impl<T: Sized + Init> SharedMemory<T> {
>      pub fn data_mut(&mut self) -> &mut T {
>          &mut self.mmap[0]
>      }
> +
> +    /// Flush all in-memory contents to the backing file.
> +    pub fn msync(&self, flags: MsFlags) -> Result<(), Error> {
> +        self.mmap.msync(flags).map_err(Into::into)
> +    }
>  }
>  
>  /// Helper to initialize nested data
> -- 
> 2.47.3
> 
> 
> 
> 
> 
>