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authorShaohua Li <shli@fb.com>2017-07-12 21:49:50 +0300
committerJens Axboe <axboe@kernel.dk>2017-07-29 18:00:03 +0300
commitc53cd490b1a491ebf1d8e30da97e7231459a4208 (patch)
tree09edea3836ea440490dcc2993c802b65b93c1e6b /include/linux/kernfs.h
parent319ba91d352a74acb47678788109a14b9b4dd4c2 (diff)
downloadlinux-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/kernfs.h')
-rw-r--r--include/linux/kernfs.h12
1 files changed, 10 insertions, 2 deletions
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;
};
/*