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wrote: > On Tue, Apr 28, 2026 at 11:10:52AM +0000, John Garry wrote: >> libmultipath: a generic multipath lib for block drivers >> >> This series introduces libmultipath. It is essentially a refactoring of >> NVME multipath support, so we can have a common library to also support >> native SCSI multipath. >> >> Much of the code is taken directly from the NVMe multipath code. However, >> NVMe specifics are removed. A template structure is provided so the driver >> may provide callbacks for driver specifics, like ANA support for NVMe. >> >> Important new structures introduced include: >> >> - mpath_head >> These contain much of the multipath-specific functionality from >> nvme_ns_head, including a pointer to the gendisk structure and >> a path SRCU-based array. >> >> - mpath_device >> This is the per-path structure, and contains much the same >> multipath-specific functionality in nvme_ns >> >> libmultipath provides functionality for path management, path selection, >> data path, and failover handling. >> >> Since the NVMe driver has some code in the sysfs and ioctl handling >> which iterate all multipath NSes, functions like mpath_call_for_device() >> are added to do the same per-path iteration. > To get upstream this library needs an in-tree consumer. So at the end > of the series, it'd makes sense to include the NVMe and/or SCSI > changes that uses it. I just sent the SCSI and NVMe series separately. Many devs would find it off putting to review a series with so patches.