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From: Eli Carter <eli.carter@inet.com>
To: linux-kernel@vger.kernel.org
Subject: .truncate function in filesystems
Date: Fri, 11 Jul 2003 14:52:38 -0500	[thread overview]
Message-ID: <3F0F1586.5090005@inet.com> (raw)

All,

I'm rather at a loss to understand what .truncate is supposed to do when 
it _extends_ a file (2.5.68+ kernel).  Looking through the examples in 
the tree, I don't see where they deal with that case.  Could someone 
give me a clue as to how .truncate is supposed to...tell the kernel what 
blocks it is to use when it goes to read from the extended portion of 
the file?

So far, I have googled, grep'ed, looked at lwn.net, started in on 
linux.bkbits.net, emailed linux-fsdevel and kernel-newbies...  and I'm 
still not getting anywhere.  Even a basic explanation of how filesystems 
  deal/interact with buffer heads and inodes would probably help at this 
point.

Any clues or pointers or _anything_ would be very much appreciated. :/

Eli
--------------------. "If it ain't broke now,
Eli Carter           \                  it will be soon." -- crypto-gram
eli.carter(a)inet.com `-------------------------------------------------


                 reply	other threads:[~2003-07-11 19:40 UTC|newest]

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