diff options
| author | Shaohua Li <shli@fb.com> | 2017-07-12 21:49:50 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2017-07-29 18:00:03 +0300 |
| commit | c53cd490b1a491ebf1d8e30da97e7231459a4208 (patch) | |
| tree | 09edea3836ea440490dcc2993c802b65b93c1e6b /include/linux | |
| parent | 319ba91d352a74acb47678788109a14b9b4dd4c2 (diff) | |
| download | linux-c53cd490b1a491ebf1d8e30da97e7231459a4208.tar.xz | |
kernfs: introduce kernfs_node_id
inode number and generation can identify a kernfs node. We are going to
export the identification by exportfs operations, so put ino and
generation into a separate structure. It's convenient when later patches
use the identification.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/cgroup.h | 2 | ||||
| -rw-r--r-- | include/linux/kernfs.h | 12 |
2 files changed, 11 insertions, 3 deletions
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index 710a005c6b7a..30c68773fd1e 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -543,7 +543,7 @@ static inline bool cgroup_is_populated(struct cgroup *cgrp) /* returns ino associated with a cgroup */ static inline ino_t cgroup_ino(struct cgroup *cgrp) { - return cgrp->kn->ino; + return cgrp->kn->id.ino; } /* cft/css accessors for cftype->write() operation */ diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index 8c00d28f468a..06a0c5913e1d 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -95,6 +95,15 @@ struct kernfs_elem_attr { struct kernfs_node *notify_next; /* for kernfs_notify() */ }; +/* represent a kernfs node */ +union kernfs_node_id { + struct { + u32 ino; + u32 generation; + }; + u64 id; +}; + /* * kernfs_node - the building block of kernfs hierarchy. Each and every * kernfs node is represented by single kernfs_node. Most fields are @@ -131,11 +140,10 @@ struct kernfs_node { void *priv; + union kernfs_node_id id; unsigned short flags; umode_t mode; - unsigned int ino; struct kernfs_iattrs *iattr; - u32 generation; }; /* |