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| Started by | Andrea Scian <rnd4@dave-tech.it> |
|---|---|
| First post | 2015-08-06 06:30 +0200 |
| Last post | 2015-08-06 06:30 +0200 |
| Articles | 1 — 1 participant |
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Re: [RFC PATCH 2/2] mtd: nand: use nand_check_erased_ecc_chunk in default ECC read functions Andrea Scian <rnd4@dave-tech.it> - 2015-08-06 06:30 +0200
| From | Andrea Scian <rnd4@dave-tech.it> |
|---|---|
| Date | 2015-08-06 06:30 +0200 |
| Subject | Re: [RFC PATCH 2/2] mtd: nand: use nand_check_erased_ecc_chunk in default ECC read functions |
| Message-ID | <pUkYx-659-3@gated-at.bofh.it> |
Il 04/08/2015 09:21, Richard Weinberger ha scritto: > Andrea, > > Am 04.08.2015 um 09:02 schrieb Andrea Scian: >>> I'm not sure whether introducing a read-before-write check is the best solution. >>> At least we need hard numbers for slow/old SLC NANDs too. >> >> We can enable the feature only for MLC, AFAIK it has not been required for old SLC ;-) > > I think this needs more discussion. > > Boris, Brian, will you be at Embedded Linux Conference Europe in Dublin? > Maybe we can discuss these issues (data retention, ff-checks, etc...) in person and > figure out where to address them. > I really want to avoid ad-hoc solutions. :) Maybe I'll be at ELCE this year too I'll be glad to meet all of you in person and participate to this discussion. :) It will be nice if also some silicon vendor would like to participate. I know that someone from micron is actively following us on this ML, but I don't really know if there's someone here in Europe. :) > >> Thanks. >> In your opinion, enabling chk_io is correct to rough estimate the overhead >> or does it enable too much checks? > > You mean the other checks bedside of self_check_write()? You can comment them out > for your tests. > > Thanks, > //richard > Kind Regards, -- Andrea SCIAN DAVE Embedded Systems -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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