bcache: add more error message in bch_cached_dev_attach() (633bb2ce) · Commits · 戴 / test

This patch adds more error message for attaching cached device, this is helpful to debug code failure during bache device start up. Signed-off-by:

drivers/md/bcache/super.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1169,6 +1169,8 @@ int bch_cached_dev_attach(struct cached_dev dc, struct cache_set c,
		down_write(&dc->writeback_lock);
		if (bch_cached_dev_writeback_start(dc)) {
		up_write(&dc->writeback_lock);
		pr_err("Couldn't start writeback facilities for %s",
		dc->disk.disk->disk_name);
		return -ENOMEM;
		}

		@@ -1182,6 +1184,8 @@ int bch_cached_dev_attach(struct cached_dev dc, struct cache_set c,
		ret = bch_cached_dev_run(dc);
		if (ret && (ret != -EBUSY)) {
		up_write(&dc->writeback_lock);
		pr_err("Couldn't run cached device %s",
		dc->backing_dev_name);
		return ret;
		}