Re: [Announce] BKL shifting into drivers and filesystems - beware

From: Chris Mason (mason@suse.com)
Date: Thu Jul 13 2000 - 17:00:12 EST


On Fri, 14 Jul 2000, Hans Reiser wrote:

> Alexander Viro wrote:
>
> > * Probably inode methods for directories are going to be called without
> > BKL. Again, I'll do the work for in-kernel filesystems, but 3rd-party ones
> > will have to be fixed by their maintainers.
>
> I encourage you to do this one, it really affects performance significantly for
> squid. Reiserfs would put everything in one directory for squid and gain 10-24%
> if not for this lock. Whether it should be done pre or post 2.4 I leave to
> others..... except to say that we will be happy to scramble a bit to adapt to
> your fix of this.
>

No, this is the big kernel lock, and is not the directory semaphore that
serializes creates/deletes to a single dir.

-chris

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