From: Al Viro <viro@zeniv.linux.org.uk>
Date: Tue, 1 Mar 2016 20:35:06 +0000 (-0500)
Subject: kill dentry_unhash()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9d95afd5971918b1aa8db1960ba24532c2d6ec89;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

kill dentry_unhash()

the last user is gone

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---

diff --git a/fs/namei.c b/fs/namei.c
index dbb8ec1a2006..794f81dce766 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3685,31 +3685,6 @@ SYSCALL_DEFINE2(mkdir, const char __user *, pathname, umode_t, mode)
 	return sys_mkdirat(AT_FDCWD, pathname, mode);
 }
 
-/*
- * The dentry_unhash() helper will try to drop the dentry early: we
- * should have a usage count of 1 if we're the only user of this
- * dentry, and if that is true (possibly after pruning the dcache),
- * then we drop the dentry now.
- *
- * A low-level filesystem can, if it choses, legally
- * do a
- *
- *	if (!d_unhashed(dentry))
- *		return -EBUSY;
- *
- * if it cannot handle the case of removing a directory
- * that is still in use by something else..
- */
-void dentry_unhash(struct dentry *dentry)
-{
-	shrink_dcache_parent(dentry);
-	spin_lock(&dentry->d_lock);
-	if (dentry->d_lockref.count == 1)
-		__d_drop(dentry);
-	spin_unlock(&dentry->d_lock);
-}
-EXPORT_SYMBOL(dentry_unhash);
-
 int vfs_rmdir(struct inode *dir, struct dentry *dentry)
 {
 	int error = may_delete(dir, dentry, 1);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index ae681002100a..c577923cd400 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1539,11 +1539,6 @@ extern int vfs_unlink(struct inode *, struct dentry *, struct inode **);
 extern int vfs_rename(struct inode *, struct dentry *, struct inode *, struct dentry *, struct inode **, unsigned int);
 extern int vfs_whiteout(struct inode *, struct dentry *);
 
-/*
- * VFS dentry helper functions.
- */
-extern void dentry_unhash(struct dentry *dentry);
-
 /*
  * VFS file helper functions.
  */