X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=include%2Flinux%2Fposix_acl.h;h=d68283a898bb8df089a5f04e29160eaea1c315b3;hb=e691d24e9c5007486bef59c589c2a2d784e0c30b;hp=67608161df6b574eb5e382678d58e9683e30a6a6;hpb=84abd88a70090cf00f9e45c3a81680874f17626e;p=mv-sheeva.git

diff --git a/include/linux/posix_acl.h b/include/linux/posix_acl.h
index 67608161df6..d68283a898b 100644
--- a/include/linux/posix_acl.h
+++ b/include/linux/posix_acl.h
@@ -108,6 +108,25 @@ static inline struct posix_acl *get_cached_acl(struct inode *inode, int type)
 	return acl;
 }
 
+static inline int negative_cached_acl(struct inode *inode, int type)
+{
+	struct posix_acl **p, *acl;
+	switch (type) {
+	case ACL_TYPE_ACCESS:
+		p = &inode->i_acl;
+		break;
+	case ACL_TYPE_DEFAULT:
+		p = &inode->i_default_acl;
+		break;
+	default:
+		BUG();
+	}
+	acl = ACCESS_ONCE(*p);
+	if (acl)
+		return 0;
+	return 1;
+}
+
 static inline void set_cached_acl(struct inode *inode,
 				  int type,
 				  struct posix_acl *acl)