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OpenCloudOS-Kernel
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bcache: more detailed error message to bcache_device_link() 

This patch adds more accurate error message for specific
ssyfs_create_link() call, to help debugging failure during
bcache device start tup.

Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Coly Li 2019-06-28 19:59:37 +08:00 committed by Jens Axboe
parent 383ff2183a
commit 4b6efb4bdb
1 changed files with 8 additions and 3 deletions
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11
drivers/md/bcache/super.c
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@ -693,6 +693,7 @@ static void bcache_device_link(struct bcache_device *d, struct cache_set *c,
{
unsigned int i;
struct cache *ca;
int ret;
for_each_cache(ca, d->c, i)
bd_link_disk_holder(ca->bdev, d->disk);
@ -700,9 +701,13 @@ static void bcache_device_link(struct bcache_device *d, struct cache_set *c,
snprintf(d->name, BCACHEDEVNAME_SIZE,
"%s%u", name, d->id);
WARN(sysfs_create_link(&d->kobj, &c->kobj, "cache") ||
sysfs_create_link(&c->kobj, &d->kobj, d->name),
"Couldn't create device <-> cache set symlinks");
ret = sysfs_create_link(&d->kobj, &c->kobj, "cache");
if (ret < 0)
pr_err("Couldn't create device -> cache set symlink");
ret = sysfs_create_link(&c->kobj, &d->kobj, d->name);
if (ret < 0)
pr_err("Couldn't create cache set -> device symlink");
clear_bit(BCACHE_DEV_UNLINK_DONE, &d->flags);
}