From: Trond Myklebust <trondmy@gmail.com>
Date: Sun, 26 Jan 2020 22:31:15 +0000 (-0500)
Subject: NFS: nfs_find_open_context() should use cred_fscmp()
X-Git-Tag: v5.6-rc1~29^2~15
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=65f5160376212094b477c7309ba9867e69ec69d5;p=thirdparty%2Flinux.git

NFS: nfs_find_open_context() should use cred_fscmp()

We want to find open contexts that match our filesystem access
properties. They don't have to exactly match the cred.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---

diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 71dfc9d2fc3d3..1309e6f47f3d6 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1061,7 +1061,7 @@ struct nfs_open_context *nfs_find_open_context(struct inode *inode, const struct
 
 	rcu_read_lock();
 	list_for_each_entry_rcu(pos, &nfsi->open_files, list) {
-		if (cred != NULL && pos->cred != cred)
+		if (cred != NULL && cred_fscmp(pos->cred, cred) != 0)
 			continue;
 		if ((pos->mode & (FMODE_READ|FMODE_WRITE)) != mode)
 			continue;