diff options
| author |   Christoph Hellwig <hch@lst.de> | 2020-05-04 14:47:54 +0200 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2020-05-07 08:45:47 -0600 |
| commit | eb7ae5e06bb6e6ac6bb86872d27c43ebab92f6b2 (patch) | |
| tree | d2726b692caa1e25c4339794e71e1cb132462b53 /mm | |
| parent | vboxsf: don't use the source name in the bdi name (diff) | |
| download | wireguard-linux-eb7ae5e06bb6e6ac6bb86872d27c43ebab92f6b2.tar.xz wireguard-linux-eb7ae5e06bb6e6ac6bb86872d27c43ebab92f6b2.zip | |
bdi: move bdi_dev_name out of line
bdi_dev_name is not a fast path function, move it out of line. This
prepares for using it from modular callers without having to export
an implementation detail like bdi_unknown_name.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/backing-dev.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index c81b4f3a7268..c2c44c89ee5d 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 @@ -1043,6 +1043,14 @@ 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 dev_name(bdi->dev); +} +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]) |