Hi Jens, this series fixes how we update i_size for the block device inodes (and thus the block device). Different helpers use two different locks (bd_mutex and i_rwsem) to protect the update, and it appears device mapper uses yet another internal lock. A lot of the drivers do the update handcrafted in often crufty ways. And in addition to that mess it turns out that the "main" lock, bd_mutex is pretty dead lock prone vs other spots in the block layer that acquire it during revalidation operations, as reported by Xianting.
Fix all that by adding a dedicated spinlock just for the size updates. Changes since v1: - don't call __invalidate_device under the new spinlock - don't call into the file system code from the nvme removal code -- dm-devel mailing list dm-devel@redhat.com https://www.redhat.com/mailman/listinfo/dm-devel
