From: Bryan Schumaker <bjschuma@netapp.com>
Date: Fri, 27 Apr 2012 17:27:39 +0000 (-0400)
Subject: NFS: Handle exceptions coming out of nfs4_proc_fs_locations()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=db0a9593d52f935c80085d8993bdcead1ad30b0c;p=linux-beck.git

NFS: Handle exceptions coming out of nfs4_proc_fs_locations()

We don't want to return -NFS4ERR_WRONGSEC to the VFS because it could
cause the kernel to oops.

Signed-off-by: Bryan Schumaker <bjschuma@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
---

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 2ce069880d6b..ff7571f12bb8 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -4921,7 +4921,7 @@ static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr)
 	fattr->nlink = 2;
 }
 
-int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
+static int _nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
 		struct nfs4_fs_locations *fs_locations, struct page *page)
 {
 	struct nfs_server *server = NFS_SERVER(dir);
@@ -4961,6 +4961,19 @@ int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
 	return status;
 }
 
+int nfs4_proc_fs_locations(struct inode *dir, const struct qstr *name,
+		struct nfs4_fs_locations *fs_locations, struct page *page)
+{
+	struct nfs4_exception exception = { };
+	int err;
+	do {
+		err = nfs4_handle_exception(NFS_SERVER(dir),
+				_nfs4_proc_fs_locations(dir, name, fs_locations, page),
+				&exception);
+	} while (exception.retry);
+	return err;
+}
+
 static int _nfs4_proc_secinfo(struct inode *dir, const struct qstr *name, struct nfs4_secinfo_flavors *flavors)
 {
 	int status;