From: Theodore Ts'o <tytso@mit.edu>
To: Namjae Jeon <linkinjeon@gmail.com>
Cc: adilger.kernel@dilger.ca, bpm@sgi.com, elder@kernel.org,
hch@infradead.org, david@fromorbit.com,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-ext4@vger.kernel.org, xfs@oss.sgi.com,
a.sangwan@samsung.com, Namjae Jeon <namjae.jeon@samsung.com>
Subject: Re: [PATCH 1/3] fs: Introduce new flag FALLOC_FL_COLLAPSE_RANGE
Date: Wed, 31 Jul 2013 18:01:54 -0400 [thread overview]
Message-ID: <20130731220154.GA11378@thunk.org> (raw)
In-Reply-To: <1375281721-15840-1-git-send-email-linkinjeon@gmail.com>
Have you considered what happens if you have a 10 megabyte file, of
which the first 5 megs are mmap'ed into a userspace process.
Now suppose you call COLLAPASE_RANGE on a one megabyte range starting
at offset 1024k from the beginning of the file.
Does the right thing happen to the mmap'ed region in memory?
Cheers,
- Ted
next prev parent reply other threads:[~2013-07-31 22:02 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-31 14:42 [PATCH 1/3] fs: Introduce new flag FALLOC_FL_COLLAPSE_RANGE Namjae Jeon
2013-07-31 22:01 ` Theodore Ts'o [this message]
2013-08-01 0:23 ` Dave Chinner
2013-08-01 0:46 ` Theodore Ts'o
2013-08-01 0:54 ` Dave Chinner
2013-08-01 1:07 ` Theodore Ts'o
2013-08-01 2:59 ` Dave Chinner
2013-08-01 4:06 ` Theodore Ts'o
2013-08-01 4:32 ` Dave Chinner
2013-08-01 0:22 ` Dave Chinner
2013-08-01 5:07 ` Namjae Jeon
2013-08-02 2:37 ` Dave Chinner
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