From: Theodore Tso <tytso@mit.edu>
To: "홍신 shin hong" <hongshin@gmail.com>
Cc: linux-ext4@vger.kernel.org
Subject: Re: a question for i_inode's i_size in ext2
Date: Fri, 19 Sep 2008 19:32:03 -0400 [thread overview]
Message-ID: <20080919233203.GA12762@mit.edu> (raw)
In-Reply-To: <2014bcab0809190021qbca7bect601c891c2db197cf@mail.gmail.com>
On Fri, Sep 19, 2008 at 04:21:44PM +0900, 홍신 shin hong wrote:
> Dear ext2 maintainers
>
> I have a question of inode's i_size. I found that it is hard to find
> any consistent synchronization mechanism that protects inode's i_size
> field.
> Is there any lock or synchronization mechanism that consistently
> protects i_size fields of inode objects to avoid data race?
> In inode's definition in /include/linux/fs.h, there is comment that
> i_lock protects i_size but it is not clear.
Yes, there is; the i_size (as well as others) are protected via
i_mutex in ext2.
Regards,
- Ted
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next prev parent reply other threads:[~2008-09-19 23:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-19 7:21 a question for i_inode's i_size in ext2 홍신 shin hong
2008-09-19 23:32 ` Theodore Tso [this message]
2008-09-20 3:25 ` Jan Kara
2008-09-20 6:35 ` Theodore Tso
[not found] ` <2014bcab0809252152i6fef9babx242e821c4f0d5a7b@mail.gmail.com>
2008-09-26 4:53 ` 홍신 shin hong
2008-09-26 14:41 ` Theodore Tso
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