Re: [Regression 6.1.y] From "cifs: Fix flushing, invalidation and file size with copy_file_range()"

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Hi,

On Sat, Jan 06, 2024 at 11:40:58AM +0100, Linux regression tracking (Thorsten Leemhuis) wrote:
> Hi, Thorsten here, the Linux kernel's regression tracker. Top-posting
> for once, to make this easily accessible to everyone.
> 
> Thank's for CCIng the regression list and telling regzbot about the
> issue. There is one important thing that afaics[1] is missing and would
> be really good to know[2]:
> 
> Does this problem also happen in mainline, e.g. with 6.7-rc8?
> 
> Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
>
> [1] I hope I didn't miss this
> [2] as explained here:
> https://docs.kernel.org/admin-guide/reporting-issues.html
> https://linux-regtracking.leemhuis.info/post/frequent-reasons-why-linux-kernel-bug-reports-are-ignored/#you-reported-a-regression-in-a-stable-or-longterm-series-without-checking-if-mainline-is-affected-as-well

Thanks a lot for replying back. So far I can tell, the regression is
in 6.1.y only and might indicate that some prerequisite changes (maybe
in the folio refactoring?) is missing. The commit identified by Suraj,
7b2404a886f8 ("cifs: Fix flushing, invalidation and file size with
copy_file_range()") from 6.7-rc5 was backported to two of the stable
series, 6.1.68 and 6.6.7.

I did not test mainline specifically (would need to first build) but
did test 6.6.9 based version and the problem is not reproduible there
(and neither with 6.6.10-rc1 which I have build for the RC series
review posting).

For this reason I added to regzbot only "regzbot ^introduced
18b02e4343e8f5be6a2f44c7ad9899b385a92730" which is the commit in
v6.1.68.

Regards,
Salvatore




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