user/sven/linux.git/include/uapi/linux/pr.h, branch v4.9.109Linux Kernel
https://git.stealer.net/cgit.cgi/user/sven/linux.git/atom?h=v4.9.1092015-10-21T20:46:56Zblock: add an API for Persistent Reservations2015-10-21T20:46:56ZChristoph Hellwighch@lst.de2015-10-15T12:10:48Zurn:sha1:bbd3e064362e5057cc4799ba2e4d68c7593e490b
This commits adds a driver API and ioctls for controlling Persistent
Reservations s/genericly/generically/ at the block layer. Persistent
Reservations are supported by SCSI and NVMe and allow controlling who gets
access to a device in a shared storage setup.
Note that we add a pr_ops structure to struct block_device_operations
instead of adding the members directly to avoid bloating all instances
of devices that will never support Persistent Reservations.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>