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| author | Tony Lindgren <tony@atomide.com> | 2020-06-08 10:14:49 -0700 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2020-06-08 10:14:49 -0700 |
| commit | 4263eb6880df8383fff0efb872278a99eb6142c8 (patch) | |
| tree | 67ab9bf228e4f5f341f9408e055180932b39fe06 /mm/backing-dev.c | |
| parent | 636338d7968e47c7f2e0b772a2a825ad932883fb (diff) | |
| parent | 8e326a8bdef3fb42b92bf2742e8405d9b9209367 (diff) | |
| download | linux-4263eb6880df8383fff0efb872278a99eb6142c8.tar.bz2 | |
Merge branch 'fixes-v5.7' into fixes
Diffstat (limited to 'mm/backing-dev.c')
| -rw-r--r-- | mm/backing-dev.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index c81b4f3a7268..efc5b83acd2d 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -21,7 +21,7 @@ struct backing_dev_info noop_backing_dev_info = { EXPORT_SYMBOL_GPL(noop_backing_dev_info); static struct class *bdi_class; -const char *bdi_unknown_name = "(unknown)"; +static const char *bdi_unknown_name = "(unknown)"; /* * bdi_lock protects bdi_tree and updates to bdi_list. bdi_list has RCU @@ -938,7 +938,8 @@ int bdi_register_va(struct backing_dev_info *bdi, const char *fmt, va_list args) if (bdi->dev) /* The driver needs to use separate queues per device */ return 0; - dev = device_create_vargs(bdi_class, NULL, MKDEV(0, 0), bdi, fmt, args); + vsnprintf(bdi->dev_name, sizeof(bdi->dev_name), fmt, args); + dev = device_create(bdi_class, NULL, MKDEV(0, 0), bdi, bdi->dev_name); if (IS_ERR(dev)) return PTR_ERR(dev); @@ -1043,6 +1044,14 @@ void bdi_put(struct backing_dev_info *bdi) } EXPORT_SYMBOL(bdi_put); +const char *bdi_dev_name(struct backing_dev_info *bdi) +{ + if (!bdi || !bdi->dev) + return bdi_unknown_name; + return bdi->dev_name; +} +EXPORT_SYMBOL_GPL(bdi_dev_name); + static wait_queue_head_t congestion_wqh[2] = { __WAIT_QUEUE_HEAD_INITIALIZER(congestion_wqh[0]), __WAIT_QUEUE_HEAD_INITIALIZER(congestion_wqh[1]) |