Re: disk revalidation updates and OOM

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On 3/11/20 11:54 PM, Christoph Hellwig wrote:
> On Wed, Mar 11, 2020 at 12:03:43PM +0800, He Zhe wrote:
>>>> 979c690d block: move clearing bd_invalidated into check_disk_size_change
>>>> f0b870d block: remove (__)blkdev_reread_part as an exported API
>>>> 142fe8f block: fix bdev_disk_changed for non-partitioned devices
>>>> a1548b6 block: move rescan_partitions to fs/block_dev.c
>>> Just to make sure we are on the same page:  if you revert all four it
>>> works, if you rever all but
>>>
>>> a1548b6 block: move rescan_partitions to fs/block_dev.c
>>>
>>> it doesn't?
>> After reverting 142fe8f, rescan_partitions would be called in block/ioctl.c
>> and cause a build failure. So I need to also revert a1548b6 to provide
>> rescan_partitions.
>>
>> OR if I manually add the following diff instead of reverting a1548b6, then yes,
>> it works too.
> Ok, so 142fe8f is good except for the build failure.
>
> Do 142fe8f and 979c690d work with the build fix applied? (f0b870d
> shouldn't be interesting for this case).

Sorry for slow reply.

With my build fix applied, the issue is triggered since 142fe8f.
And I can see the endless loop of invalidate and revalidate...

Zhe



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