Solving linux partition /run out of inode space

The inode (index node) is a data structure in a Unix-style file system that describes a file-system object such as a file or a directory. Each inode stores the attributes and disk block locations of the object's data. What will happen if you inode full ?

root@darkstar:/run/test# df -hi
Filesystem     Inodes IUsed IFree IUse% Mounted on
/dev/root        448K  237K  212K   53% /
devtmpfs         178K   577  177K    1% /dev
tmpfs            179K  179K     0  100% /run
tmpfs            179K     1  179K    1% /dev/shm
cgroup_root      179K    14  179K    1% /sys/fs/cgroup
none             179K     1  179K    1% /run/user/1000


mount -o remount,nr_inodes=<bignum> /run




Check with :
df -i



execute this : 
mount -o remount,nr_inodes=400000 /run/


Then check again :
df -i