From: Al Viro <viro@zeniv.linux.org.uk>
Date: Wed, 24 Jun 2009 21:02:42 +0000 (-0400)
Subject: another race fix in jfs_check_acl()
X-Git-Tag: firefly_0821_release~13593^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d5bb68adda7cc179e8efadeaa3a283cb470f13a6;p=firefly-linux-kernel-4.4.55.git

another race fix in jfs_check_acl()

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

diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
index f272bf032e1e..91fa3ad6e8c2 100644
--- a/fs/jfs/acl.c
+++ b/fs/jfs/acl.c
@@ -118,15 +118,16 @@ out:
 
 static int jfs_check_acl(struct inode *inode, int mask)
 {
-	if (inode->i_acl == ACL_NOT_CACHED) {
-		struct posix_acl *acl = jfs_get_acl(inode, ACL_TYPE_ACCESS);
-		if (IS_ERR(acl))
-			return PTR_ERR(acl);
+	struct posix_acl *acl = jfs_get_acl(inode, ACL_TYPE_ACCESS);
+
+	if (IS_ERR(acl))
+		return PTR_ERR(acl);
+	if (acl) {
+		int error = posix_acl_permission(inode, acl, mask);
 		posix_acl_release(acl);
+		return error;
 	}
 
-	if (inode->i_acl)
-		return posix_acl_permission(inode, inode->i_acl, mask);
 	return -EAGAIN;
 }