linux-kernel - Re: disk revalidation updates and OOM

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Date:   Tue, 10 Mar 2020 17:26:47 +0100
From:   Christoph Hellwig <hch@....de>
To:     He Zhe <zhe.he@...driver.com>
Cc:     Christoph Hellwig <hch@....de>, jack@...e.cz,
        Jens Axboe <axboe@...nel.dk>, viro@...iv.linux.org.uk,
        bvanassche@....org, keith.busch@...el.com, tglx@...utronix.de,
        mwilck@...e.com, yuyufen@...wei.com, linux-block@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: disk revalidation updates and OOM

On Tue, Mar 10, 2020 at 11:30:27PM +0800, He Zhe wrote:
> > So this is the exact requirement of commits to be reverted from a bisect
> > or just a first guess?
> 
> Many commits failed to build or boot during bisection.
> 
> At least the following four have to be reverted to make it work.
> 
> 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?