From 0615ab3a2372cbc5c6a684b4a1e749b0c9224f41 Mon Sep 17 00:00:00 2001
From: Thomas Schoebel-Theuer <tst@1und1.de>
Date: Mon, 21 Feb 2022 14:07:06 +0100
Subject: [PATCH] copy: fix enum type checking

block/mars/kernel/mars_copy.c:466:2: warning: case label value is less than minimum value for type [-Wswitch-outside-range]
---
 kernel/mars_copy.c | 4 ++--
 kernel/mars_copy.h | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/mars_copy.c b/kernel/mars_copy.c
index 5ff1feaa..30006cad 100644
--- a/kernel/mars_copy.c
+++ b/kernel/mars_copy.c
@@ -434,8 +434,8 @@ int _next_state(struct copy_brick *brick, unsigned index, loff_t pos)
 	struct mref_object *mref0;
 	struct mref_object *mref1;
 	struct copy_state *st;
-	char state;
-	char next_state;
+	enum _copy_state state;
+	enum _copy_state next_state;
 	bool do_restart = false;
 	int progress = 0;
 	int status;
diff --git a/kernel/mars_copy.h b/kernel/mars_copy.h
index b62d7df1..a704f34c 100644
--- a/kernel/mars_copy.h
+++ b/kernel/mars_copy.h
@@ -41,7 +41,7 @@ extern int mars_copy_write_max_fly;
 extern atomic_t global_copy_read_flight;
 extern atomic_t global_copy_write_flight;
 
-enum {
+enum _copy_state {
 	COPY_STATE_RESET    = -1,
 	COPY_STATE_START    = 0, // don't change this, it _must_ be zero
 	COPY_STATE_START2,
@@ -52,12 +52,12 @@ enum {
 	COPY_STATE_WRITTEN,
 	COPY_STATE_CLEANUP,
 	COPY_STATE_FINISHED,
-};
+} __packed;
 
 struct copy_state {
 	struct mref_object *table[2];
 	bool active[2];
-	char state;
+	enum _copy_state state;
 	bool writeout;
 	short prev;
 	unsigned short len;