Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!pt.cs.cmu.edu!rochester!udel!mmdf
From: HBO043%DJUKFA11.BITNET@cunyvm.cuny.edu (Christoph van Wuellen)
Newsgroups: comp.os.minix
Subject: should FS call dev_open on mount?
Message-ID: <15250@nigel.udel.EDU>
Date: 28 Mar 90 15:23:53 GMT
Sender: mmdf@udel.EDU
Lines: 11

Is there any reason why FS doesn't call dev_open during the mount
system call, and analogously, dev_close on umount?
Some devices might need initializations and this hook would make life
easier for those who want to implement trackbuffering:
 - flush track buffers o dsk_close
 - invalidate track buffers on dsk_open

If dev_open and dev_close are called upon mount/umount, there would be
only one place left in the FS to be changed for trackbuffering: forward
a sync() call to the driver to get the track buffers flushed.
C.v.W.