linux-ext4 - Re: issue of ext3_file_write function & remote shares

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Message-ID: <20090213140307.GC10683@mini-me.lan>
Date:	Fri, 13 Feb 2009 09:03:07 -0500
From:	Theodore Tso <tytso@....edu>
To:	Kavita Kulkarni <Kavita_Kulkarni@...lexsystems.com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: issue of ext3_file_write function & remote shares

On Fri, Feb 13, 2009 at 06:16:24PM +0530, Kavita Kulkarni wrote:
> The "ext3_file_write" function in the file
> "/usr/src/linux-source/fs/ext3/file.c" is called whenever a file is
> accessed/modified.

That's where you're wrong.  Files can also be modified via mmap(), and
file modifications that take place after files are memory mapped and
then modified via their memory mappings do not go through
ext3_file_write.

					- Ted
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