[PATCH 02/39] new helper: simple_done_creating()
From: Al Viro <viro@zeniv.linux.org.uk>
Date: 2025-09-20 07:48:02
Also in:
linux-efi, linux-fsdevel, linux-mm, linux-usb, ocfs2-devel
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
should be paired with simple_start_creating() - unlocks parent and drops dentry reference. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> --- fs/libfs.c | 8 ++++++++ include/linux/fs.h | 1 + 2 files changed, 9 insertions(+)
diff --git a/fs/libfs.c b/fs/libfs.c
index d029aff41f66..a033f35493d0 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c@@ -2326,3 +2326,11 @@ struct dentry *simple_start_creating(struct dentry *parent, const char *name) return dentry; } EXPORT_SYMBOL(simple_start_creating); + +/* parent must have been held exclusive since simple_start_creating() */ +void simple_done_creating(struct dentry *child) +{ + inode_unlock(child->d_parent->d_inode); + dput(child); +} +EXPORT_SYMBOL(simple_done_creating);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 3a33c68249e2..e3000302c3b9 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h@@ -3659,6 +3659,7 @@ extern int simple_fill_super(struct super_block *, unsigned long, extern int simple_pin_fs(struct file_system_type *, struct vfsmount **mount, int *count); extern void simple_release_fs(struct vfsmount **mount, int *count); struct dentry *simple_start_creating(struct dentry *, const char *); +void simple_done_creating(struct dentry *); extern ssize_t simple_read_from_buffer(void __user *to, size_t count, loff_t *ppos, const void *from, size_t available);
--
2.47.3