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bcache: add more error message in bch_cached_dev_attach() 

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: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
alistair/sunxi64-5.4-dsi
Coly Li 2019-06-28 19:59:38 +08:00 committed by Jens Axboe
parent 4b6efb4bdb
commit 633bb2ce60
1 changed files with 4 additions and 0 deletions
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4
drivers/md/bcache/super.c
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@ -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;
}