From: Kazuya Mio <k-mio@sx.jp.nec.com>
To: Andreas Dilger <adilger@dilger.ca>
Cc: ext4 <linux-ext4@vger.kernel.org>, Theodore Tso <tytso@mit.edu>,
linux-fsdevel@vger.kernel.org
Subject: Re: [RFC][PATCH V3 1/4] ext4: add EXT4_IOC_CONTROL_PA to create/discard inode PA
Date: Thu, 02 Dec 2010 15:07:27 +0900 [thread overview]
Message-ID: <4CF7379F.7030402@sx.jp.nec.com> (raw)
In-Reply-To: <62E660B4-8AF6-4B94-B3C0-1557ACA136DB@dilger.ca>
2010/12/01 19:14, Andreas Dilger wrote:
> Is the comment here wrong, or do I misunderstand that there is a 64-bit offset for the file, and only a 32-bit offset for the disk? It doesn't make sense to create a new API that only has a 32-bit offset for the disk, since ext4 is nearly supporting 64-bit filesystem blocks.
Oops! Thank you for letting me know. I will fix the comments as follows:
struct ext4_prealloc_info {
__u64 pi_pstart; /* physical offset for the start of the PA from
* the beginning of the disk (in/out) */
__u32 pi_lstart; /* logical offset for the start of the PA from
* the beginning of the file (in/out) */
Regards,
Kazuya Mio
prev parent reply other threads:[~2010-12-02 6:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-01 6:06 [RFC][PATCH V3 1/4] ext4: add EXT4_IOC_CONTROL_PA to create/discard inode PA Kazuya Mio
2010-12-01 10:14 ` Andreas Dilger
2010-12-02 6:07 ` Kazuya Mio [this message]
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