ovl: enable RCU'd ->get_acl()

[linux-2.6-microblaze.git] / fs / overlayfs / inode.c

diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index 7d52e5e..832b175 100644 (file)
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -13,6 +13,7 @@
 #include <linux/fiemap.h>
 #include <linux/fileattr.h>
 #include <linux/security.h>
+#include <linux/namei.h>
 #include "overlayfs.h"
 
 
@@ -446,7 +447,7 @@ ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size)
        return res;
 }
 
-struct posix_acl *ovl_get_acl(struct inode *inode, int type)
+struct posix_acl *ovl_get_acl(struct inode *inode, int type, bool rcu)
 {
        struct inode *realinode = ovl_inode_real(inode);
        const struct cred *old_cred;
@@ -455,6 +456,9 @@ struct posix_acl *ovl_get_acl(struct inode *inode, int type)
        if (!IS_ENABLED(CONFIG_FS_POSIX_ACL) || !IS_POSIXACL(realinode))
                return NULL;
 
+       if (rcu)
+               return get_cached_acl_rcu(realinode, type);
+
        old_cred = ovl_override_creds(inode->i_sb);
        acl = get_acl(realinode, type);
        revert_creds(old_cred);