linux-kernel - Re: [PATCH 3/4] UBI: Fastmap: Care about the protection queue

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Date:	Thu, 02 Oct 2014 16:28:52 +0300
From:	Tanya Brokhman <tlinder@...eaurora.org>
To:	Richard Weinberger <richard@....at>, dedekind1@...il.com
CC:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] UBI: Fastmap: Care about the protection queue

Hi Richard

On 9/30/2014 1:20 AM, Richard Weinberger wrote:
> Fastmap can miss a PEB if it is in the protection queue
> and not jet in the used tree.
> Treat every protected PEB as used.
>
> Signed-off-by: Richard Weinberger <richard@....at>
> ---
>   drivers/mtd/ubi/fastmap.c | 13 +++++++++++++
>   1 file changed, 13 insertions(+)
>
> diff --git a/drivers/mtd/ubi/fastmap.c b/drivers/mtd/ubi/fastmap.c
> index 2b0d8d6..2853a69 100644
> --- a/drivers/mtd/ubi/fastmap.c
> +++ b/drivers/mtd/ubi/fastmap.c
> @@ -1195,6 +1195,19 @@ static int ubi_write_fastmap(struct ubi_device *ubi,
>   		fm_pos += sizeof(*fec);
>   		ubi_assert(fm_pos <= ubi->fm_size);
>   	}
> +
> +	for (i = 0; i < UBI_PROT_QUEUE_LEN; i++) {
> +		list_for_each_entry(wl_e, &ubi->pq[i], u.list) {

why not list_for_each_entry_safe?

> +			fec = (struct ubi_fm_ec *)(fm_raw + fm_pos);
> +
> +			fec->pnum = cpu_to_be32(wl_e->pnum);
> +			fec->ec = cpu_to_be32(wl_e->ec);
> +
> +			used_peb_count++;
> +			fm_pos += sizeof(*fec);
> +			ubi_assert(fm_pos <= ubi->fm_size);

Is fm_size ok with this addition or does it needs updating as well?

> +		}
> +	}
>   	fmh->used_peb_count = cpu_to_be32(used_peb_count);
>
>   	for (node = rb_first(&ubi->scrub); node; node = rb_next(node)) {
>

Thanks
Tanya Brokhman
-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, 
hosted by The Linux Foundation
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