[PATCH RESEND] fs/nsfs.c: include linux/proc_fs.h for open_related_ns()

[Eric Biggers <ebiggers@kernel.org>]

From: Eric Biggers <ebiggers@google.com>

open_related_ns() is defined in fs/nsfs.c and declared in
linux/proc_fs.h, but the declaration isn't included at the point of the
definition.  Include the header to enforce that the definition matches
the declaration.

This addresses a gcc warning when -Wmissing-prototypes is enabled.

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 fs/nsfs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/nsfs.c b/fs/nsfs.c
index 60702d677bd4e..a7ff518400a10 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -2,6 +2,7 @@
 #include <linux/mount.h>
 #include <linux/file.h>
 #include <linux/fs.h>
+#include <linux/proc_fs.h>
 #include <linux/proc_ns.h>
 #include <linux/magic.h>
 #include <linux/ktime.h>
-- 
2.20.1.97.g81188d93c3-goog