[PATCH RESEND] fs/buffer.c: include fs/internal.h for missing prototypes

[Eric Biggers <ebiggers@kernel.org>]

From: Eric Biggers <ebiggers@google.com>

Include fs/internal.h to address the following 'sparse' warnings:

    fs/buffer.c:1930:5: warning: symbol '__block_write_begin_int' was not declared. Should it be static?
    fs/buffer.c:2089:6: warning: symbol '__generic_write_end' was not declared. Should it be static?
    fs/buffer.c:2998:6: warning: symbol 'guard_bio_eod' was not declared. Should it be static?

Signed-off-by: Eric Biggers <ebiggers@google.com>
---
 fs/buffer.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/buffer.c b/fs/buffer.c
index 0faa41fb4c88..95d08807863b 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -47,6 +47,8 @@
 #include <linux/sched/mm.h>
 #include <trace/events/block.h>
 
+#include "internal.h"
+
 static int fsync_buffers_list(spinlock_t *lock, struct list_head *list);
 static int submit_bh_wbc(int op, int op_flags, struct buffer_head *bh,
 			 enum rw_hint hint, struct writeback_control *wbc);
-- 
2.22.1