linux-kernel - Re: [PATCH 00/16] f2fs: introduce flash-friendly file system

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Message-ID: <CAKYAXd_6MheUVRm7HVofXVp-HWStZNVw2GCqXNfKukxbJ5rG5g@mail.gmail.com>
Date:	Thu, 11 Oct 2012 12:14:58 +0900
From:	Namjae Jeon <linkinjeon@...il.com>
To:	Jaegeuk Kim <jaegeuk.kim@...sung.com>
Cc:	Vyacheslav Dubeyko <slava@...eyko.com>,
	Marco Stornelli <marco.stornelli@...il.com>,
	Jaegeuk Kim <jaegeuk.kim@...il.com>,
	Al Viro <viro@...iv.linux.org.uk>, tytso@....edu,
	gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
	chur.lee@...sung.com, cm224.lee@...sung.com,
	jooyoung.hwang@...sung.com, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 00/16] f2fs: introduce flash-friendly file system

2012/10/10 Jaegeuk Kim <jaegeuk.kim@...sung.com>:

>>
>> I mean that every volume is placed inside any partition (MTD or GPT). Every partition begins from any
>> physical sector. So, as I can understand, f2fs volume can begin from physical sector that is laid
>> inside physical erase block. Thereby, in such case of formating the f2fs's operation units will be
>> unaligned in relation of physical erase blocks, from my point of view. Maybe, I misunderstand
>> something but it can lead to additional FTL operations and performance degradation, from my point of
>> view.
>
> I think mkfs already calculates the offset to align that.
I think this answer is not what he want.
If you don't use partition table such as dos partition table or gpt, I
think that it is possible to align using mkfs.
But If we should consider partition table space in storage, I don't
understand how it  could be align using mkfs.

Thanks.
> Thanks,
>
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