From: Coly Li Date: Tue, 27 Feb 2018 17:49:29 +0000 (-0800) Subject: bcache: correct flash only vols (check all uuids) X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=02aa8a8b2b84531fa78b9a486d9b2a0700f7bc08;p=linux.git bcache: correct flash only vols (check all uuids) Commit 2831231d4c3f ("bcache: reduce cache_set devices iteration by devices_max_used") adds c->devices_max_used to reduce iteration of c->uuids elements, this value is updated in bcache_device_attach(). But for flash only volume, when calling flash_devs_run(), the function bcache_device_attach() is not called yet and c->devices_max_used is not updated. The unexpected result is, the flash only volume won't be run by flash_devs_run(). This patch fixes the issue by iterate all c->uuids elements in flash_devs_run(). c->devices_max_used will be updated properly when bcache_device_attach() gets called. [mlyle: commit subject edited for character limit] Fixes: 2831231d4c3f ("bcache: reduce cache_set devices iteration by devices_max_used") Reported-by: Tang Junhui Signed-off-by: Coly Li Reviewed-by: Michael Lyle Signed-off-by: Jens Axboe --- diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 3128957880367..4d1d8dfb2d2a4 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1274,7 +1274,7 @@ static int flash_devs_run(struct cache_set *c) struct uuid_entry *u; for (u = c->uuids; - u < c->uuids + c->devices_max_used && !ret; + u < c->uuids + c->nr_uuids && !ret; u++) if (UUID_FLASH_ONLY(u)) ret = flash_dev_run(c, u);