From 73598611ade7c85f0c3d52ba5130103f6709c6d3 Mon Sep 17 00:00:00 2001 From: Nick Piggin Date: Fri, 7 Jan 2011 17:50:00 +1100 Subject: ext2,3,4: provide simple rcu-walk ACL implementation This simple implementation just checks for no ACLs on the inode, and if so, then the rcu-walk may proceed, otherwise fail it. Signed-off-by: Nick Piggin --- fs/ext4/acl.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'fs/ext4/acl.c') diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c index 373dcaeedba..e0270d1f8d8 100644 --- a/fs/ext4/acl.c +++ b/fs/ext4/acl.c @@ -242,8 +242,11 @@ ext4_check_acl(struct inode *inode, int mask, unsigned int flags) { struct posix_acl *acl; - if (flags & IPERM_FLAG_RCU) - return -ECHILD; + if (flags & IPERM_FLAG_RCU) { + if (!negative_cached_acl(inode, ACL_TYPE_ACCESS)) + return -ECHILD; + return -EAGAIN; + } acl = ext4_get_acl(inode, ACL_TYPE_ACCESS); if (IS_ERR(acl)) -- cgit v1.2.3