nfsd: remove /proc/fs/nfs when create /proc/fs/nfs/exports error

when create /proc/fs/nfs/exports error, we should remove /proc/fs/nfs,
if don't do it, it maybe cause Memory leak.

 Signed-off-by: fanchaoting <fanchaoting@cn.fujitsu.com>
 Reviewed-by: chendt.fnst <chendt.fnst@cn.fujitsu.com>

Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index a830f33df3ef..68a4d320cd14 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1111,8 +1111,10 @@ static int create_proc_exports_entry(void)
                 return -ENOMEM;
         entry = proc_create("exports", 0, entry,
                                  &exports_proc_operations);
-        if (!entry)
+        if (!entry) {
+                remove_proc_entry("fs/nfs", NULL);
                 return -ENOMEM;
+        }
         return 0;
 }
 #else /* CONFIG_PROC_FS */