linux-kernel - Re: [GIT PULL] bcachefs changes for 6.12-rc1

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Message-ID: <5wupeqpme5syfqwleeckmvdv5vtsg7m3fsvc7sr6br45mx4mr4@5y3ylpgdnd46>
Date: Mon, 23 Sep 2024 15:58:21 -0400
From: Kent Overstreet <kent.overstreet@...ux.dev>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-bcachefs@...r.kernel.org, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [GIT PULL] bcachefs changes for 6.12-rc1

On Mon, Sep 23, 2024 at 12:07:24PM GMT, Linus Torvalds wrote:
> On Mon, 23 Sept 2024 at 10:18, Linus Torvalds
> <torvalds@...ux-foundation.org> wrote:
> >
> > On Sat, 21 Sept 2024 at 12:28, Kent Overstreet
> > <kent.overstreet@...ux.dev> wrote:
> > >
> > > We're now using an rhashtable instead of the system inode hash table;
> > > this is another significant performance improvement on multithreaded
> > > metadata workloads, eliminating more lock contention.
> >
> > So I've pulled this, but I reacted to this issue - what is the load
> > where the inode hash table is actually causing issues?
> 
> Oh, and I also only now noticed that a third of the commits are fairly
> recent and from after the merge window even started.
> 
> Maybe there's a good reason for that, but it sure wasn't explained in
> the pull request. Grr.

I rebased to drop a patch that conflicts with Andrew's tree (the
PF_MEMALLOC_NORECLAIM stuff, which I would still like to chat with him
about since I missed him at Plumbers...)