GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-06-28 01:21:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

kernfs: don't set dentry->d_fsdata

Browse source 
When working on adding exportfs operations in kernfs, I found it's hard
to initialize dentry->d_fsdata in the exportfs operations. Looks there
is no way to do it without race condition. Look at the kernfs code
closely, there is no point to set dentry->d_fsdata. inode->i_private
already points to kernfs_node, and we can get inode from a dentry. So
this patch just delete the d_fsdata usage.

Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Shaohua Li 2017-07-12 11:49:49 -07:00 • committed by Jens Axboe
parent ba16b2846a
commit 319ba91d35
6 changed files with 27 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

7
fs/kernfs/kernfs-internal.h
View file

@ -70,6 +70,13 @@ struct kernfs_super_info {
};
#define kernfs_info(SB) ((struct kernfs_super_info *)(SB->s_fs_info))
static inline struct kernfs_node *kernfs_dentry_node(struct dentry *dentry)
{
if (d_really_is_negative(dentry))
return NULL;
return d_inode(dentry)->i_private;
}
extern const struct super_operations kernfs_sops;
extern struct kmem_cache *kernfs_node_cache;