On Wed, Apr 11, 2018 at 10:35 AM, Amir Goldstein <amir73il@xxxxxxxxx> wrote:
> We could pack the ovl_entry further to 32 bytes with or without cache
> pool. Not sure if it is worse it though(?):
>
> struct ovl_path {
> unsigned short reserved;
> unsigned short layer_idx;
> struct dentry *dentry;
> };
>
> struct ovl_entry {
> union {
> struct {
> unsigned long flags;
Heh, this anonymous struct is no longer needed.
> };
> struct rcu_head rcu;
Not sure what are we protecting in overlay_entry with rcu. A comment
somewhere would be good. Will need to investigate...
> };
> union {
> unsigned short numlower;
> struct ovl_path lowerstack[1];
> };
> };
Ugly.
Thanks,
Miklos
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