fs: provide rcu-walk aware permission i_ops

[linux-2.6-microblaze.git] / fs / btrfs / acl.c

diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 2222d16..cb518a4 100644 (file)
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -185,13 +185,15 @@ static int btrfs_xattr_acl_set(struct dentry *dentry, const char *name,
        return ret;
 }
 
-int btrfs_check_acl(struct inode *inode, int mask)
+int btrfs_check_acl(struct inode *inode, int mask, unsigned int flags)
 {
        struct posix_acl *acl;
        int error = -EAGAIN;
 
-       acl = btrfs_get_acl(inode, ACL_TYPE_ACCESS);
+       if (flags & IPERM_FLAG_RCU)
+               return -ECHILD;
 
+       acl = btrfs_get_acl(inode, ACL_TYPE_ACCESS);
        if (IS_ERR(acl))
                return PTR_ERR(acl);
        if (acl) {