Commit 20955e89 authored by Stephen Boyd's avatar Stephen Boyd Committed by Linus Torvalds

libfs: add simple_open()

debugfs and a few other drivers use an open-coded version of
simple_open() to pass a pointer from the file to the read/write file
ops.  Add support for this simple case to libfs so that we can remove
the many duplicate copies of this simple function.
Signed-off-by: default avatarStephen Boyd <>
Cc: Al Viro <>
Cc: Julia Lawall <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 7563ec4c
......@@ -264,6 +264,13 @@ Enomem:
return ERR_PTR(-ENOMEM);
int simple_open(struct inode *inode, struct file *file)
if (inode->i_private)
file->private_data = inode->i_private;
return 0;
int simple_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry)
struct inode *inode = old_dentry->d_inode;
......@@ -984,6 +991,7 @@ EXPORT_SYMBOL(simple_dir_operations);
......@@ -2502,6 +2502,7 @@ extern int dcache_readdir(struct file *, void *, filldir_t);
extern int simple_setattr(struct dentry *, struct iattr *);
extern int simple_getattr(struct vfsmount *, struct dentry *, struct kstat *);
extern int simple_statfs(struct dentry *, struct kstatfs *);
extern int simple_open(struct inode *inode, struct file *file);
extern int simple_link(struct dentry *, struct inode *, struct dentry *);
extern int simple_unlink(struct inode *, struct dentry *);
extern int simple_rmdir(struct inode *, struct dentry *);
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