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From 8cde9f259c7d91d05b12cc68993a9643d6b4e45f Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@lst.de>
Date: Tue, 7 Jan 2020 15:25:38 -0800
Subject: [PATCH] xfs: also remove cached ACLs when removing the underlying
 attr
Git-commit: 8cde9f259c7d91d05b12cc68993a9643d6b4e45f
Patch-mainline: v5.6-rc1
References: bsc#1165873

We should not just invalidate the ACL when setting the underlying
attribute, but also when removing it.  The ioctl interface gets that
right, but the normal xattr inteface skipped the xfs_forget_acl due
to an early return.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Acked-by: Anthony Iliopoulos <ailiopoulos@suse.com>

---
 fs/xfs/xfs_xattr.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
index 383f0203d103..2288f20ae282 100644
--- a/fs/xfs/xfs_xattr.c
+++ b/fs/xfs/xfs_xattr.c
@@ -74,10 +74,11 @@ xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
 	if (flags & XATTR_REPLACE)
 		xflags |= ATTR_REPLACE;
 
-	if (!value)
-		return xfs_attr_remove(ip, (unsigned char *)name, xflags);
-	error = xfs_attr_set(ip, (unsigned char *)name,
+	if (value)
+		error = xfs_attr_set(ip, (unsigned char *)name,
 				(void *)value, size, xflags);
+	else
+		error = xfs_attr_remove(ip, (unsigned char *)name, xflags);
 	if (!error)
 		xfs_forget_acl(inode, name, xflags);
 
-- 
2.16.4