switch alloc_file() to passing struct path
... and have the caller grab both mnt and dentry; kill
leak in infiniband, while we are at it.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/anon_inodes.c b/fs/anon_inodes.c
index 2ca7a7c..94f5110 100644
--- a/fs/anon_inodes.c
+++ b/fs/anon_inodes.c
@@ -88,7 +88,7 @@
void *priv, int flags)
{
struct qstr this;
- struct dentry *dentry;
+ struct path path;
struct file *file;
int error;
@@ -106,10 +106,11 @@
this.name = name;
this.len = strlen(name);
this.hash = 0;
- dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
- if (!dentry)
+ path.dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
+ if (!path.dentry)
goto err_module;
+ path.mnt = mntget(anon_inode_mnt);
/*
* We know the anon_inode inode count is always greater than zero,
* so we can avoid doing an igrab() and we can use an open-coded
@@ -117,14 +118,13 @@
*/
atomic_inc(&anon_inode_inode->i_count);
- dentry->d_op = &anon_inodefs_dentry_operations;
+ path.dentry->d_op = &anon_inodefs_dentry_operations;
/* Do not publish this dentry inside the global dentry hash table */
- dentry->d_flags &= ~DCACHE_UNHASHED;
- d_instantiate(dentry, anon_inode_inode);
+ path.dentry->d_flags &= ~DCACHE_UNHASHED;
+ d_instantiate(path.dentry, anon_inode_inode);
error = -ENFILE;
- file = alloc_file(anon_inode_mnt, dentry,
- FMODE_READ | FMODE_WRITE, fops);
+ file = alloc_file(&path, FMODE_READ | FMODE_WRITE, fops);
if (!file)
goto err_dput;
file->f_mapping = anon_inode_inode->i_mapping;
@@ -137,7 +137,7 @@
return file;
err_dput:
- dput(dentry);
+ path_put(&path);
err_module:
module_put(fops->owner);
return ERR_PTR(error);