Re: [PATCH 6.16 000/564] 6.16.2-rc2 review

[Dan Carpenter <dan.carpenter@linaro.org>]

On Wed, Aug 20, 2025 at 08:06:01PM +0530, Naresh Kamboju wrote:
> On Tue, 19 Aug 2025 at 18:02, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > This is the start of the stable review cycle for the 6.16.2 release.
> > There are 564 patches in this series, all will be posted as a response
> > to this one.  If anyone has any issues with these being applied, please
> > let me know.
> >
> > Responses should be made by Thu, 21 Aug 2025 12:27:23 +0000.
> > Anything received after that time might be too late.
> >
> > The whole patch series can be found in one patch at:
> >         https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.16.2-rc2.gz
> > or in the git tree and branch at:
> >         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.16.y
> > and the diffstat can be found below.
> >
> > thanks,
> >
> > greg k-h
> 
> As I have reported last week on 6.16.1-rc1 as regression is
> still noticed on 6.16.2-rc2.
> 
> WARNING: CPU: 0 PID: 7012 at fs/jbd2/transaction.c:334 start_this_handle
> 
> Full test log:
> ------------[ cut here ]------------
> [  153.965287] WARNING: CPU: 0 PID: 7012 at fs/jbd2/transaction.c:334
> start_this_handle+0x4df/0x500

The problem is that we only applied the last two patches in:
https://lore.kernel.org/linux-ext4/20250707140814.542883-1-yi.zhang@huaweicloud.com/

Naresh is on vacation until Monday, but he tested the patchset on
linux-next and it fixed the issues.  So we need to cherry-pick the
following commits.

1bfe6354e097 ext4: process folios writeback in bytes
f922c8c2461b ext4: move the calculation of wbc->nr_to_write to mpage_folio_done()
ded2d726a304 ext4: fix stale data if it bail out of the extents mapping loop
2bddafea3d0d ext4: refactor the block allocation process of ext4_page_mkwrite()
e2c4c49dee64 ext4: restart handle if credits are insufficient during allocating blocks
6b132759b0fe ext4: enhance tracepoints during the folios writeback
95ad8ee45cdb ext4: correct the reserved credits for extent conversion
bbbf150f3f85 ext4: reserved credits for one extent during the folio writeback
57661f28756c ext4: replace ext4_writepage_trans_blocks()

They all apply cleanly to 6.16.3-rc1.

regards,
dan carpenter