linux-kernel - Re: [GIT PULL] bcachefs fixes for 6.7.y

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Message-ID: <tjgrhcqgfc5oghnli63pftb3bieecm27mokd5veilhpalpp6cy@ralxgoy3yyqg>
Date: Sun, 10 Mar 2024 15:52:10 -0400
From: Kent Overstreet <kent.overstreet@...ux.dev>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-bcachefs@...r.kernel.org, stable@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [GIT PULL] bcachefs fixes for 6.7.y

On Sun, Mar 10, 2024 at 03:43:38PM -0400, Kent Overstreet wrote:
> The following changes since commit 2e7cdd29fc42c410eab52fffe5710bf656619222:
> 
>   Linux 6.7.9 (2024-03-06 14:54:01 +0000)
> 
> are available in the Git repository at:
> 
>   https://evilpiepirate.org/git/bcachefs.git tags/bcachefs-for-v6.7-stable-20240310
> 
> for you to fetch changes up to 560ceb6a4d9e3bea57c29f5f3a7a1d671dfc7983:
> 
>   bcachefs: Fix BTREE_ITER_FILTER_SNAPSHOTS on inodes btree (2024-03-10 14:36:57 -0400)
> 
> ----------------------------------------------------------------
> bcachefs fixes for 6.7 stable
> 
> "bcachefs: fix simulateously upgrading & downgrading" is the important
> one here. This fixes a really nasty bug where in a rare situation we
> wouldn't downgrade; we'd write a superblock where the version number is
> higher than the currently supported version.
> 
> This caused total failure to mount multi device filesystems with the
> splitbrain checking in 6.8, since now we wouldn't be updating the member
> sequence numbers used for splitbrain checking, but the version number
> said we would be - and newer versions would attempt to kick every device
> out of the fs.
> 
> ----------------------------------------------------------------
> Helge Deller (1):
>       bcachefs: Fix build on parisc by avoiding __multi3()
> 
> Kent Overstreet (3):
>       bcachefs: check for failure to downgrade
>       bcachefs: fix simulateously upgrading & downgrading
>       bcachefs: Fix BTREE_ITER_FILTER_SNAPSHOTS on inodes btree
> 
> Mathias Krause (1):
>       bcachefs: install fd later to avoid race with close
> 
>  fs/bcachefs/btree_iter.c        |  4 +++-
>  fs/bcachefs/chardev.c           |  3 +--
>  fs/bcachefs/errcode.h           |  1 +
>  fs/bcachefs/mean_and_variance.h |  2 +-
>  fs/bcachefs/super-io.c          | 27 ++++++++++++++++++++++++---
>  5 files changed, 30 insertions(+), 7 deletions(-)