lightnvm: pblk: gc all lines in the pipeline before exit
authorHans Holmberg <hans.holmberg@cnexlabs.com>
Fri, 13 Oct 2017 12:46:41 +0000 (14:46 +0200)
committerJens Axboe <axboe@kernel.dk>
Fri, 13 Oct 2017 14:34:57 +0000 (08:34 -0600)
commitd6b992f7ab6279884238d4e2babf100c0879b3d6
tree6f1dd1ed74a8f33191961cf22bbec2aa5cc1b1e5
parentc55861926a78bf129e06bd3372b34225f4968757
lightnvm: pblk: gc all lines in the pipeline before exit

Finish garbage collect of the lines that are in the gc pipeline
before exiting. Ensure that all lines already in in the pipeline
goes through, from read to write.

Do this by keeping track of how many lines are in the pipeline
and waiting for that number to reach zero before exiting the gc
reader task.

Since we're adding a new gc line counter, change the name of
inflight_gc to read_inflight_gc to make the distinction clear.

Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/lightnvm/pblk-core.c
drivers/lightnvm/pblk-gc.c
drivers/lightnvm/pblk-sysfs.c
drivers/lightnvm/pblk.h