Re: [PATCH] 2.5: push BKL out of llseek

From: Robert Love (rml@tech9.net)
Date: Wed Jan 30 2002 - 08:39:12 EST


On Wed, 2002-01-30 at 03:00, Trond Myklebust wrote:

>> " " == Alexander Viro <viro@math.psu.edu> writes:
>
> > So I'd prefer to do it in two stages - shift BKL into
> > ->llseek() and then see where it can be dropped/replaced with
> > ->i_sem.
>
> Seconded. There are several filesystems out there for which i_sem does
> nothing to protect inode->i_size.

Then the first patch is the way to go. We know generic_file_llseek is
safe and perhaps a few other of the llseek methods. The remaining can
explicitly grab the bkl on their own, as Al suggested.

        Robert Love

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