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simple_recursive_removal(): kernel-side rm -rf for ramfs-style filesystems

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two requirements: no file creations in IS_DEADDIR and no cross-directory
renames whatsoever.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2019-11-18 09:43:10 -05:00
parent e42617b825
commit a3d1e7eb5a
9 changed files with 104 additions and 218 deletions
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include/linux/fs.h
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@@ -3303,6 +3303,8 @@ extern int simple_unlink(struct inode *, struct dentry *);
extern int simple_rmdir(struct inode *, struct dentry *);
extern int simple_rename(struct inode *, struct dentry *,
struct inode *, struct dentry *, unsigned int);
extern void simple_recursive_removal(struct dentry *,
void (*callback)(struct dentry *));
extern int noop_fsync(struct file *, loff_t, loff_t, int);
extern int noop_set_page_dirty(struct page *page);
extern void noop_invalidatepage(struct page *page, unsigned int offset,