summaryrefslogtreecommitdiff
path: root/fs/kernfs/inode.c
diff options
context:
space:
mode:
authorShaohua Li <shli@fb.com>2017-07-12 21:49:49 +0300
committerJens Axboe <axboe@kernel.dk>2017-07-29 18:00:03 +0300
commit319ba91d352a74acb47678788109a14b9b4dd4c2 (patch)
tree5c3de7ff9d1614ce546043115f46c762e2ffacbd /fs/kernfs/inode.c
parentba16b2846a8c6965d0d35be3968bc10f6277812d (diff)
downloadlinux-319ba91d352a74acb47678788109a14b9b4dd4c2.tar.xz
kernfs: don't set dentry->d_fsdata
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>
Diffstat (limited to 'fs/kernfs/inode.c')
-rw-r--r--fs/kernfs/inode.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/kernfs/inode.c b/fs/kernfs/inode.c
index 79cdae4758fb..4c8b51085a86 100644
--- a/fs/kernfs/inode.c
+++ b/fs/kernfs/inode.c
@@ -112,7 +112,7 @@ int kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
int kernfs_iop_setattr(struct dentry *dentry, struct iattr *iattr)
{
struct inode *inode = d_inode(dentry);
- struct kernfs_node *kn = dentry->d_fsdata;
+ struct kernfs_node *kn = inode->i_private;
int error;
if (!kn)
@@ -154,7 +154,7 @@ static int kernfs_node_setsecdata(struct kernfs_iattrs *attrs, void **secdata,
ssize_t kernfs_iop_listxattr(struct dentry *dentry, char *buf, size_t size)
{
- struct kernfs_node *kn = dentry->d_fsdata;
+ struct kernfs_node *kn = kernfs_dentry_node(dentry);
struct kernfs_iattrs *attrs;
attrs = kernfs_iattrs(kn);
@@ -203,8 +203,8 @@ static void kernfs_refresh_inode(struct kernfs_node *kn, struct inode *inode)
int kernfs_iop_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int query_flags)
{
- struct kernfs_node *kn = path->dentry->d_fsdata;
struct inode *inode = d_inode(path->dentry);
+ struct kernfs_node *kn = inode->i_private;
mutex_lock(&kernfs_mutex);
kernfs_refresh_inode(kn, inode);