[lkml]   [2001]   [Nov]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [CFT][PATCH] long-living cache for block devices

On Sun, 11 Nov 2001, Linus Torvalds wrote:

> If we end up removing the module, we'll call "unregister_blockdev()" or
> whatever, which in turn gets rid of _all_ pages, and that that time we
> will correctly get rid of buffers.
> And before you remove the module I see no advantage to have any guarantees
> of quiescence and removing the buffer heads. I only see extra code that
> doesn't seem to have any real purpose..

As it is, driver has a right to destroy any internal data structures as
soon as the last ->release() is called. None of them expect requests
coming in after that and frankly, that makes sense.

IOW, if there is any point in _having_ ->release() at all, we'd better
make sure that nothing will bother the driver between the final ->release()
and the next ->open().

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:13    [W:0.079 / U:0.800 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site