On Mon, Feb 24, 2025 at 09:20:42PM +0000, Al Viro wrote:
> Just set DCACHE_DONTCACHE in ->s_d_flags and be done with that.
> Dentries there live for as long as they are pinned; once the
> refcount hits zero, that's it. The same, of course, goes for
> other tree-in-dcache filesystems - more in the next commits...
>
> Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> ---
Reviewed-by: Christian Brauner <brauner@xxxxxxxxxx>
> mm/shmem.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/shmem.c b/mm/shmem.c
> index 0ecb49113bb2..dd84b1c554a8 100644
> --- a/mm/shmem.c
> +++ b/mm/shmem.c
> @@ -4971,7 +4971,6 @@ static void shmem_put_super(struct super_block *sb)
> static const struct dentry_operations shmem_ci_dentry_ops = {
> .d_hash = generic_ci_d_hash,
> .d_compare = generic_ci_d_compare,
> - .d_delete = always_delete_dentry,
> };
> #endif
>
> @@ -5028,6 +5027,7 @@ static int shmem_fill_super(struct super_block *sb, struct fs_context *fc)
> #else
> sb->s_flags |= SB_NOUSER;
> #endif /* CONFIG_TMPFS */
> + sb->s_d_flags |= DCACHE_DONTCACHE;
> sbinfo->max_blocks = ctx->blocks;
> sbinfo->max_inodes = ctx->inodes;
> sbinfo->free_ispace = sbinfo->max_inodes * BOGO_INODE_SIZE;
> --
> 2.39.5
>
