That can be usefull for restarting qemu process while allowing backward merging to run asyncronously in kernel.
v2: rebase on top of vz9.80.19, make completion event consistent, fix deadlock when cancel after start and before work run v3: weaken locking in progress printing a bit to decrease possible lock contention v4: signal that we are at completion waiting on change of eventfd https://virtuozzo.atlassian.net/browse/VSTOR-100466 Signed-off-by: Pavel Tikhomirov <ptikhomi...@virtuozzo.com> Pavel Tikhomirov (5): dm-qcow2: fix warning about wrong printk format for size_t dm-qcow2: cleanup error handling in qcow2_merge_backward dm-qcow2: make merge_backward command asyncronous dm-qcow2: add merge_backward set_eventfd command dm-qcow2: add merge_backward progress command drivers/md/dm-qcow2-cmd.c | 281 ++++++++++++++++++++++++++++++++--- drivers/md/dm-qcow2-map.c | 4 +- drivers/md/dm-qcow2-target.c | 6 + drivers/md/dm-qcow2.h | 35 +++++ 4 files changed, 300 insertions(+), 26 deletions(-) -- 2.48.1 _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
