Mark a superblock that is for for an R/O or Backup volume as SB_RDONLY when
mounting it.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: linux-afs@lists.infradead.org
---
 fs/afs/super.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/afs/super.c b/fs/afs/super.c
index e95fb4cb4fcd..a01a0fb2cdbb 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -407,8 +407,10 @@ static int afs_validate_fc(struct fs_context *fc)
 			return PTR_ERR(volume);
 
 		ctx->volume = volume;
-		if (volume->type != AFSVL_RWVOL)
+		if (volume->type != AFSVL_RWVOL) {
 			ctx->flock_mode = afs_flock_mode_local;
+			fc->sb_flags |= SB_RDONLY;
+		}
 	}
 
 	return 0;

On Thu, Nov 16, 2023 at 11:53 AM David Howells <dhowells@redhat.com> wrote:
>
> Mark a superblock that is for for an R/O or Backup volume as SB_RDONLY when
> mounting it.
>
> Signed-off-by: David Howells <dhowells@redhat.com>
> cc: Marc Dionne <marc.dionne@auristor.com>
> cc: linux-afs@lists.infradead.org
> ---
>  fs/afs/super.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/fs/afs/super.c b/fs/afs/super.c
> index e95fb4cb4fcd..a01a0fb2cdbb 100644
> --- a/fs/afs/super.c
> +++ b/fs/afs/super.c
> @@ -407,8 +407,10 @@ static int afs_validate_fc(struct fs_context *fc)
>                         return PTR_ERR(volume);
>
>                 ctx->volume = volume;
> -               if (volume->type != AFSVL_RWVOL)
> +               if (volume->type != AFSVL_RWVOL) {
>                         ctx->flock_mode = afs_flock_mode_local;
> +                       fc->sb_flags |= SB_RDONLY;
> +               }
>         }
>
>         return 0;

Reviewed-by: Marc Dionne <marc.dionne@auristor.com>

Marc