Re: [RFC 2/3] hugetlbfs: coordinate global and subpool reserve accounting

[Hillf Danton]

> @@ -3444,10 +3445,14 @@ int hugetlb_reserve_pages(struct inode *inode,
>  	 * Check enough hugepages are available for the reservation.
>  	 * Hand the pages back to the subpool if there are not
>  	 */

Better if comment is updated correspondingly.
Hillf
> -	ret = hugetlb_acct_memory(h, chg);
> -	if (ret < 0) {
> -		hugepage_subpool_put_pages(spool, chg);
> -		goto out_err;
> +	if (subpool_reserved(spool))
> +		ret = 0;
> +	else {
> +		ret = hugetlb_acct_memory(h, chg);
> +		if (ret < 0) {
> +			hugepage_subpool_put_pages(spool, chg);
> +			goto out_err;
> +		}
>  	}
> 

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