From: Richard Weinberger <richard@nod.at>
To: Tanya Brokhman <tlinder@codeaurora.org>, dedekind1@gmail.com
Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/4] UBI: Fastmap: Care about the protection queue
Date: Thu, 02 Oct 2014 15:32:59 +0200 [thread overview]
Message-ID: <542D540B.5010808@nod.at> (raw)
In-Reply-To: <542D5314.3050701@codeaurora.org>
Am 02.10.2014 15:28, schrieb Tanya Brokhman:
> 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@nod.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?
Because we don't delete elements from this list while iterating over it.
>> + 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?
It is okay. The fastmap size calculation reserves enough space for all possible
PEBs.
Thanks,
//richard
next prev parent reply other threads:[~2014-10-02 13:33 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-29 22:20 UBI: Fastmap fixes - round one Richard Weinberger
2014-09-29 22:20 ` [PATCH 1/4] UBI: Ensure that all fastmap work is done upon WL shutdown Richard Weinberger
2014-09-30 6:26 ` Artem Bityutskiy
2014-09-30 6:58 ` Richard Weinberger
2014-09-30 7:53 ` Bityutskiy, Artem
2014-09-30 8:07 ` Richard Weinberger
2014-10-03 12:52 ` Artem Bityutskiy
2014-10-02 13:05 ` Tanya Brokhman
2014-10-02 13:18 ` Richard Weinberger
2014-09-29 22:20 ` [PATCH 2/4] UBI: Fastmap: Calc fastmap size correctly Richard Weinberger
2014-10-02 13:14 ` Tanya Brokhman
2014-10-02 13:18 ` Richard Weinberger
2014-10-02 14:04 ` Tanya Brokhman
2014-10-03 14:38 ` Artem Bityutskiy
2014-09-29 22:20 ` [PATCH 3/4] UBI: Fastmap: Care about the protection queue Richard Weinberger
2014-10-02 13:28 ` Tanya Brokhman
2014-10-02 13:32 ` Richard Weinberger [this message]
2014-10-02 14:14 ` Tanya Brokhman
2014-10-03 14:31 ` Artem Bityutskiy
2014-10-03 19:06 ` Richard Weinberger
2014-10-13 13:17 ` Artem Bityutskiy
2014-10-13 14:30 ` Richard Weinberger
2014-10-13 15:23 ` Artem Bityutskiy
2014-10-13 15:28 ` Bityutskiy, Artem
2014-10-13 21:04 ` Richard Weinberger
2014-10-14 10:23 ` Artem Bityutskiy
2014-10-14 12:21 ` Tanya Brokhman
2014-10-14 13:02 ` Artem Bityutskiy
2014-10-14 13:35 ` Tanya Brokhman
2014-10-16 10:06 ` Richard Weinberger
2014-10-16 10:15 ` Artem Bityutskiy
2014-10-16 11:07 ` Richard Weinberger
2014-10-20 14:46 ` Artem Bityutskiy
2014-10-20 15:17 ` Richard Weinberger
2014-10-20 15:40 ` Artem Bityutskiy
2014-10-20 15:59 ` Richard Weinberger
2014-10-20 16:09 ` Artem Bityutskiy
2014-10-20 16:17 ` Richard Weinberger
2014-10-20 20:46 ` Richard Weinberger
2014-09-29 22:20 ` [PATCH 4/4] UBI: Fastmap: Ensure that only one fastmap work is scheduled Richard Weinberger
2014-09-30 6:45 ` Bityutskiy, Artem
2014-09-30 6:59 ` Richard Weinberger
2014-09-30 7:39 ` Bityutskiy, Artem
2014-09-30 7:44 ` Richard Weinberger
2014-10-02 14:22 ` Tanya Brokhman
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