Re: [PATCH STABLE 5.10 0/2] btrfs: raid56: backports to reduce corruption

[Greg KH <greg@kroah.com>]

On Fri, Aug 19, 2022 at 08:01:08PM +0800, Qu Wenruo wrote:
> This is the backport for v5.10.x stable branch.
> 
> The full explananation can be found here:
> https://lore.kernel.org/linux-btrfs/cover.1660891713.git.wqu@suse.com/
> 
> Difference between v5.10.x and v5.15.x backports:
> 
> - Naming change in btrfs_io_contrl
>   In v5.15, we don't have the btrfs_io_contrl rename, thus only
>   btrfs_bio.
> 
> - Missing btrfs_fs_info::sectorsize_bits
>   Since RAID56 doesn't support anything but PAGE_SIZE == sectorsize
>   (until v5.19+), here we just use PAGE_SHIFT.
> 
> Another thing related to v5.10.x testing is, there are some lockdep
> assert triggered related to uuid_mutex.
> 
> I'm not 100% sure, but at least RAID56 code is not touching that mutex,
> thus I guess it's some other problems.
> 
> Qu Wenruo (2):
>   btrfs: only write the sectors in the vertical stripe which has data
>     stripes
>   btrfs: raid56: don't trust any cached sector in
>     __raid56_parity_recover()
> 
>  fs/btrfs/raid56.c | 74 ++++++++++++++++++++++++++++++++++++-----------
>  1 file changed, 57 insertions(+), 17 deletions(-)
> 
> -- 
> 2.37.1
> 

Now queued up, thanks.

greg k-h