Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> writes:
> On Mon, Oct 21, 2024 at 05:43:54PM +0200, Mahmoud Adam wrote:
>>
>> Hello,
>>
>> In the latest 5.10.227 we see LTP preadv03 failing on EXT3/4, when
>> bisected it was found that the commit dde4c1e1663b6 ("ext4: properly
>> sync file size update after O_SYNC direct IO") is causing it
>>
>> This seems similar to what occurred before[1] and if I understand
>> correctly it was because of missing dependency backport 936e114a245b6
>> ("iomap: update ki_pos a little later in iomap_dio_complete") which was
>> then backported to 5.15 & 6.1 but not to 5.10.
>>
>> *This is not failing on 5.15 nor 6.1, and it does fail consistently in x86-64 & ARM
>>
>> [1]: https://lore.kernel.org/all/20231205122122.dfhhoaswsfscuhc3@quack3/
>>
>
>
> What do you suggest be done?
>
I think as an urgent fix I would suggest reverting the mentioned commit
and commits that depend on it from 5.10.y..
4911610c7a1fe ("ext4: fix warning in ext4_dio_write_end_io()")
f8a7c342326f6 ("ext4: dax: fix overflowing extents beyond inode size when partially writing")
dde4c1e1663b6 ("ext4: properly sync file size update after O_SYNC direct
IO")
maybe someone from the ext4 side confirm that as well?
thanks,
MNAdam
