kernfs: Convert to u64 id
The kernfs_id was an union type sharing a 64bit id with 32bit ino +
gen. But it resulted in using 32bit inode even on 64bit systems.
Also dealing with an union is annoying especially if you just want to
use a single id.
Thus let's get rid of the kernfs_node_id type and use u64 directly.
The upper 32bit is used for gen and lower is for ino on 32bit systems.
The kernfs_id_ino() and kernfs_id_gen() helpers will take care of the
bit handling depends on the system word size.
Signed-off-by: Tejun Heo <tj@kernel.org>
[namhyung: fix build error in bpf_get_current_cgroup_id()]
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
13 files changed
