Re: [PATCH] nfsd: remove unnecessary cache_put from idmap_lookup

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On Mon, 05 Aug 2024, Guoqing Jiang wrote:
> It is not needed given cache_check already calls cache_put on failure,
> otherwise we call cache_put twice in case of -ETIMEDOUT.   

cache_check() was called on a different *item.

This cache_put() puts the *item returned by lookup_fn() two lines
earlier.

The current code is correct.

NeilBrown

> 
> Signed-off-by: Guoqing Jiang <guoqing.jiang@xxxxxxxxx>
> ---
>  fs/nfsd/nfs4idmap.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
> index 7a806ac13e31..08a354783d57 100644
> --- a/fs/nfsd/nfs4idmap.c
> +++ b/fs/nfsd/nfs4idmap.c
> @@ -521,7 +521,6 @@ idmap_lookup(struct svc_rqst *rqstp,
>  		*item = lookup_fn(detail, key);
>  		if (*item != prev_item)
>  			goto retry;
> -		cache_put(&(*item)->h, detail);
>  	}
>  	return ret;
>  }
> -- 
> 2.35.3
> 
> 





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