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anon_inode_getfile(): switch to alloc_file_pseudo()

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Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2018-06-09 09:58:23 -04:00
parent e68375c850
commit 52c91f8b3b
1 changed files with 6 additions and 23 deletions
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29
fs/anon_inodes.c
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@ -71,8 +71,6 @@ struct file *anon_inode_getfile(const char *name,
const struct file_operations *fops,
void *priv, int flags)
{
struct qstr this;
struct path path;
struct file *file;
if (IS_ERR(anon_inode_inode))
@ -81,39 +79,24 @@ struct file *anon_inode_getfile(const char *name,
if (fops->owner && !try_module_get(fops->owner))
return ERR_PTR(-ENOENT);
/*
* Link the inode to a directory entry by creating a unique name
* using the inode sequence number.
*/
file = ERR_PTR(-ENOMEM);
this.name = name;
this.len = strlen(name);
this.hash = 0;
path.dentry = d_alloc_pseudo(anon_inode_mnt->mnt_sb, &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 ihold() is safe.
*/
ihold(anon_inode_inode);
d_instantiate(path.dentry, anon_inode_inode);
file = alloc_file(&path, flags & (O_ACCMODE | O_NONBLOCK), fops);
file = alloc_file_pseudo(anon_inode_inode, anon_inode_mnt, name,
flags & (O_ACCMODE | O_NONBLOCK), fops);
if (IS_ERR(file))
goto err_dput;
goto err;
file->f_mapping = anon_inode_inode->i_mapping;
file->private_data = priv;
return file;
err_dput:
path_put(&path);
err_module:
err:
iput(anon_inode_inode);
module_put(fops->owner);
return file;
}