On Mon, Feb 24, 2025 at 09:20:47PM +0000, Al Viro wrote:
> just set DCACHE_DONTCACHE for "don't cache" mounts...
>
> Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> ---
Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>
> fs/9p/vfs_dentry.c | 1 -
> fs/9p/vfs_super.c | 6 ++++--
> 2 files changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/fs/9p/vfs_dentry.c b/fs/9p/vfs_dentry.c
> index 5061f192eafd..04795508a795 100644
> --- a/fs/9p/vfs_dentry.c
> +++ b/fs/9p/vfs_dentry.c
> @@ -127,7 +127,6 @@ const struct dentry_operations v9fs_cached_dentry_operations = {
> };
>
> const struct dentry_operations v9fs_dentry_operations = {
> - .d_delete = always_delete_dentry,
> .d_release = v9fs_dentry_release,
> .d_unalias_trylock = v9fs_dentry_unalias_trylock,
> .d_unalias_unlock = v9fs_dentry_unalias_unlock,
> diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
> index 5c3dc3efb909..795c6388744c 100644
> --- a/fs/9p/vfs_super.c
> +++ b/fs/9p/vfs_super.c
> @@ -134,10 +134,12 @@ static struct dentry *v9fs_mount(struct file_system_type *fs_type, int flags,
> if (retval)
> goto release_sb;
>
> - if (v9ses->cache & (CACHE_META|CACHE_LOOSE))
> + if (v9ses->cache & (CACHE_META|CACHE_LOOSE)) {
> set_default_d_op(sb, &v9fs_cached_dentry_operations);
> - else
> + } else {
> set_default_d_op(sb, &v9fs_dentry_operations);
> + sb->s_d_flags |= DCACHE_DONTCACHE;
> + }
>
> inode = v9fs_get_new_inode_from_fid(v9ses, fid, sb);
> if (IS_ERR(inode)) {
> --
> 2.39.5
>
