>  
>
>This is racy (albeit very unlikely) because dst may be freed by
>dst_run_gc after the atomic_dec.
>
>When we are not the real parent of the dst (e.g., when we're xfrm_dst
>and the child is an rtentry), it may already be on the GC list.
>
>In fact the current code is buggy to, we need to check dst->flags
>before the dec as dst may no longer be valid afterwards.
>
>
>  
>
This patch  will remove the need for atomic_dec_and_test for this 
particular case.
Now we can break down the atomic_dec_and_test to atomic_dec & atomic_read.

Please comment.

Regards
Pravin.