On 3/10/20 3:40 PM, Christoph Hellwig wrote: > On Mon, Mar 02, 2020 at 11:55:44AM +0800, He Zhe wrote: >> Hi, >> >> Since the following commit >> https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-5.5/disk-revalidate&id=6917d0689993f46d97d40dd66c601d0fd5b1dbdd >> until now(v5.6-rc4), >> >> If we start udisksd service of systemd(v244), systemd-udevd will scan /dev/hdc >> (the cdrom device created by default in qemu(v4.2.0)). systemd-udevd will >> endlessly run and cause OOM. >> >> >> >> It works well by reverting the following series of commits. >> >> 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 >> 6917d06 block: merge invalidate_partitions into rescan_partitions > 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 Regards, Zhe
