bcache: gc does not work when triggering by manual command
authorTang Junhui <tang.junhui@zte.com.cn>
Wed, 6 Sep 2017 06:25:55 +0000 (14:25 +0800)
committerJens Axboe <axboe@kernel.dk>
Wed, 6 Sep 2017 14:17:33 +0000 (08:17 -0600)
commit0b43f49dc4d6d3789e936731dc16af94cb57d568
tree318ac8d254a2560f7ccb1401a3a105308362925f
parent09b3efec81def807fb225359e34a8e72866dd9c4
bcache: gc does not work when triggering by manual command

I try to execute the following command to trigger gc thread:
[root@localhost internal]# echo 1 > trigger_gc
But it does not work, I debug the code in gc_should_run(), It works only
if in invalidating or sectors_to_gc < 0. So set sectors_to_gc to -1 to
meet the condition when we trigger gc by manual command.

(Code comments aded by Coly Li)

Signed-off-by: Tang Junhui <tang.junhui@zte.com.cn>
Reviewed-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
drivers/md/bcache/sysfs.c