From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from linserv001.aimsys.nl (a80-127-156-242.adsl.xs4all.nl [80.127.156.242]) (using TLSv1 with cipher EDH-RSA-DES-CBC3-SHA (168/168 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTP id 4D96467B4A for ; Mon, 6 Mar 2006 23:36:18 +1100 (EST) Subject: Re: How to quickly write cleanmarkers to jffs2 partitions? From: Jaap-Jan Boor To: Mathieu Deschamps In-Reply-To: <200603031008.20075.mathieu.deschamps@com2gether.net> References: <200603021706.14618.david.jander@protonic.nl> <200603031008.20075.mathieu.deschamps@com2gether.net> Content-Type: multipart/signed; micalg=sha1; protocol="application/x-pkcs7-signature"; boundary="=-Yf0bB0Bm1xcgZP8SEwB1" Date: Mon, 06 Mar 2006 13:21:24 +0100 Message-Id: <1141647684.23522.7.camel@linpc041.aimsys.nl> Mime-Version: 1.0 Cc: David Jander , linuxppc-embedded@ozlabs.org List-Id: Linux on Embedded PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , --=-Yf0bB0Bm1xcgZP8SEwB1 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Fri, 2006-03-03 at 10:08 +0100, Mathieu Deschamps wrote: > Hi, >=20 > "When preparing a flash partition for JFFS2, it is recommended to put=20 > cleanmarkers to the erased blocks. > This might be done my means of "-j" option of the "flash_eraseall" MTD=20 > utility. Otherwise, JFFS2 will re-erase the blocks > which contain all 0xFF and have no cleanmarker. This is an unneeded wasti= ng of=20 > time." >=20 > Source : http://www.linux-mtd.infradead.org/faq/jffs2.html >=20 > does this may be relevant ? This is correct, however flash_eraseall does also (as it's name suggests, erase all flash blocks, which takes some time on NOR flash. If you 'know' the flash is erased, it's not needed. I used flash_eraseall to write the cleanmarkers, but without erasing blocks (and called that utility cleanmark) Jaap-Jan >=20 >=20 >=20 > Best Regards, >=20 >=20 > Mathieu Deschamps. >=20 > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded >=20 --=-Yf0bB0Bm1xcgZP8SEwB1 Content-Type: application/x-pkcs7-signature; name=smime.p7s Content-Disposition: attachment; filename=smime.p7s Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIID/DCCA/gw ggNhoAMCAQICAQwwDQYJKoZIhvcNAQEEBQAwgaMxCzAJBgNVBAYTAk5MMRYwFAYDVQQIEw1Ob29y ZCBIb2xsYW5kMRIwEAYDVQQHEwlIaWx2ZXJzdW0xFzAVBgNVBAoTDkFpbVZhbGxleSBCLlYuMRww GgYDVQQLExNTZWN1cml0eSBEZXBhcnRtZW50MTEwLwYDVQQDEyhBaW1WYWxsZXkgUm9vdCBDZXJ0 aWZpY2F0aW9uIEF1dGhvcml0eSAxMB4XDTA1MDcwMzE5MTQ0NVoXDTA2MDcwMzE5MTQ0NVowgawx CzAJBgNVBAYTAk5MMRYwFAYDVQQIEw1Ob29yZCBIb2xsYW5kMRIwEAYDVQQHEwlIaWx2ZXJzdW0x FzAVBgNVBAoTDkFpbVZhbGxleSBCLlYuMRwwGgYDVQQLExNTZWN1cml0eSBEZXBhcnRtZW50MRkw FwYDVQQDFBBqamJvb3JAYWltc3lzLm5sMR8wHQYJKoZIhvcNAQkBFhBqamJvb3JAYWltc3lzLm5s MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDSaQ+TlMoyr4eU0v+pTPEwdQVaOvZaVstPT4HO Bs1ZpCudyz/d5uXbjWUqhVZXN9RmjUsYqOpTerOmdKLGQG+iF0V04G6HgkFGGwSNOYzIPggbjBCp Od73z50VUaSEJIx7biCkii/HCEQtjMNHE43x7E6BQHsFlwxcZVxXpwTmjwIDAQABo4IBLzCCASsw CQYDVR0TBAIwADAsBglghkgBhvhCAQ0EHxYdT3BlblNTTCBHZW5lcmF0ZWQgQ2VydGlmaWNhdGUw HQYDVR0OBBYEFNI9c+sPawUOChOJkpIcB4lloJAxMIHQBgNVHSMEgcgwgcWAFLQ7l4QR8t4pz5gw b3NBgNlqWk7HoYGppIGmMIGjMQswCQYDVQQGEwJOTDEWMBQGA1UECBMNTm9vcmQgSG9sbGFuZDES MBAGA1UEBxMJSGlsdmVyc3VtMRcwFQYDVQQKEw5BaW1WYWxsZXkgQi5WLjEcMBoGA1UECxMTU2Vj dXJpdHkgRGVwYXJ0bWVudDExMC8GA1UEAxMoQWltVmFsbGV5IFJvb3QgQ2VydGlmaWNhdGlvbiBB dXRob3JpdHkgMYIBADANBgkqhkiG9w0BAQQFAAOBgQA5e6p8IA8odS5Hjk8VJVLZgHABYpnUs/Ld yFzTEpDtRFwINLUiViq72FwBYVKIQQJHaE5l+mYhw5y9TB1gXRLxyPUxyqExWh92VPVhSzKPN9Rk IXZ65OIr+j5PXLfSEM6zm0Iv1yKcTjUNnh+P4Se9fln3yVUtxr1opZMsr0RCsjGCAa8wggGrAgEB MIGpMIGjMQswCQYDVQQGEwJOTDEWMBQGA1UECBMNTm9vcmQgSG9sbGFuZDESMBAGA1UEBxMJSGls dmVyc3VtMRcwFQYDVQQKEw5BaW1WYWxsZXkgQi5WLjEcMBoGA1UECxMTU2VjdXJpdHkgRGVwYXJ0 bWVudDExMC8GA1UEAxMoQWltVmFsbGV5IFJvb3QgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkgMQIB DDAJBgUrDgMCGgUAoF0wGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcN MDYwMzA2MTIyMTI0WjAjBgkqhkiG9w0BCQQxFgQUXRuOL/pe1/ArV6+52ruhlTbCZEAwDQYJKoZI hvcNAQEBBQAEgYBTINVMX8toDMTjWAcxu/I1EOevHASzgdy+xBkzyk7oAqQ3ZG9rbQhqv76Q73HE MMkCKsVwvsbumHwVO84m5BwUT5U+rj3IhkEKkEDTBhzuIv1vuiFx0s0iBia564VPKr/x9qfFYcIn DE9sMs/kkaYsgOZP2j49o3Dy+BtNe1N/4QAAAAAAAA== --=-Yf0bB0Bm1xcgZP8SEwB1--