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| author | Coly Li <colyli@suse.de> | 2019-06-28 19:59:39 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2019-06-28 07:39:15 -0600 |
| commit | e0faa3d7f79f7e1abb43de168e88c76061518ea4 (patch) | |
| tree | be0414ddc41dab93b423108558179691cb571e1d /drivers/md | |
| parent | 633bb2ce60b949e2990c15324be162c54788c027 (diff) | |
| download | linux-e0faa3d7f79f7e1abb43de168e88c76061518ea4.tar.gz linux-e0faa3d7f79f7e1abb43de168e88c76061518ea4.tar.bz2 linux-e0faa3d7f79f7e1abb43de168e88c76061518ea4.zip | |
bcache: improve error message in bch_cached_dev_run()
This patch adds more error message in bch_cached_dev_run() to indicate
the exact reason why an error value is returned. Please notice when
printing out the "is running already" message, pr_info() is used here,
because in this case also -EBUSY is returned, the bcache device can
continue to attach to the cache devince and run, so it won't be an
error level message in kernel message.
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/bcache/super.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index a836910ef368..e9e6d653bf70 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -926,13 +926,18 @@ int bch_cached_dev_run(struct cached_dev *dc) NULL, }; - if (dc->io_disable) + if (dc->io_disable) { + pr_err("I/O disabled on cached dev %s", + dc->backing_dev_name); return -EIO; + } if (atomic_xchg(&dc->running, 1)) { kfree(env[1]); kfree(env[2]); kfree(buf); + pr_info("cached dev %s is running already", + dc->backing_dev_name); return -EBUSY; } @@ -961,7 +966,7 @@ int bch_cached_dev_run(struct cached_dev *dc) if (sysfs_create_link(&d->kobj, &disk_to_dev(d->disk)->kobj, "dev") || sysfs_create_link(&disk_to_dev(d->disk)->kobj, &d->kobj, "bcache")) { - pr_debug("error creating sysfs link"); + pr_err("Couldn't create bcache dev <-> disk sysfs symlinks"); return -ENOMEM; } |