[lkml]   [2000]   [Dec]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [RFC] Generic deferred file writing

On Sun, 31 Dec 2000, Roman Zippel wrote:
> On Sun, 31 Dec 2000, Linus Torvalds wrote:
> > Let me repeat myself one more time:
> >
> > I do not believe that "get_block()" is as big of a problem as people make
> > it out to be.
> The real problem is that get_block() doesn't scale and it's very hard to
> do. A recursive per inode-semaphore might help, but it's still a pain to
> get it right.

Not true.

There's nothing unscalable in get_block() per se. The only lock we hold is
the per-page lock, which we must hold anyway. get_block() itself does not
need any real locking: you can do it with a simple per-inode spinlock if
you want to (and release the spinlock and try again if you need to fetch
non-cached data blocks).

Sure, the current ext2 _implementation_ sucks. Nobody has ever contested

Stop re-designing something just because you want to.


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

 \ /
  Last update: 2005-03-22 12:52    [W:0.116 / U:0.268 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site