diff options
| author | Tejun Heo <tj@kernel.org> | 2019-11-04 15:54:30 -0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2019-11-12 08:18:03 -0800 |
| commit | 67c0496e87d193b8356d2af49ab95e8a1b954b3c (patch) | |
| tree | 6932e986bdd7786fa8f18d4e7f832ef259d5c219 /kernel/cgroup | |
| parent | 880df131617393252f1fff701ed5b7b6d14c52c4 (diff) | |
kernfs: convert kernfs_node->id from union kernfs_node_id to u64
kernfs_node->id is currently a union kernfs_node_id which represents
either a 32bit (ino, gen) pair or u64 value. I can't see much value
in the usage of the union - all that's needed is a 64bit ID which the
current code is already limited to. Using a union makes the code
unnecessarily complicated and prevents using 64bit ino without adding
practical benefits.
This patch drops union kernfs_node_id and makes kernfs_node->id a u64.
ino is stored in the lower 32bits and gen upper. Accessors -
kernfs[_id]_ino() and kernfs[_id]_gen() - are added to retrieve the
ino and gen. This simplifies ID handling less cumbersome and will
allow using 64bit inos on supported archs.
This patch doesn't make any functional changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'kernel/cgroup')
| -rw-r--r-- | kernel/cgroup/cgroup.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index cf32c0c7a45d..c6bd1a5a1977 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -5786,8 +5786,7 @@ static int __init cgroup_wq_init(void) } core_initcall(cgroup_wq_init); -void cgroup_path_from_kernfs_id(const union kernfs_node_id *id, - char *buf, size_t buflen) +void cgroup_path_from_kernfs_id(u64 id, char *buf, size_t buflen) { struct kernfs_node *kn; |