From ed614f17fc9f3876b2178db949df42a2605f6895 Mon Sep 17 00:00:00 2001
From: Frantisek Sumsal <frantisek@sumsal.cz>
Date: Wed, 25 Jan 2023 13:21:09 +0100
Subject: partition: fix build with newer linux/btrfs.h uapi header

linux/btrfs.h needs  to be included after sys/mount.h, as since [0]
linux/btrfs.h includes linux/fs.h causing build errors:

```
In file included from /usr/include/linux/fs.h:19,
                 from ../src/basic/linux/btrfs.h:29,
                 from ../src/partition/growfs.c:6:
/usr/include/sys/mount.h:35:3: error: expected identifier before numeric constant
   35 |   MS_RDONLY = 1,                /* Mount read-only.  */
      |   ^~~~~~~~~
[1222/2169] Compiling C object systemd-creds.p/src_creds_creds.c.o
ninja: build stopped: subcommand failed.
```

See: https://github.com/systemd/systemd/issues/8507

[0] https://github.com/torvalds/linux/commit/a28135303a669917002f569aecebd5758263e4aa
---
 src/partition/growfs.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/partition/growfs.c b/src/partition/growfs.c
index 248746f724..62f3ee6744 100644
--- a/src/partition/growfs.c
+++ b/src/partition/growfs.c
@@ -3,12 +3,17 @@
 #include <errno.h>
 #include <fcntl.h>
 #include <getopt.h>
-#include <linux/btrfs.h>
 #include <linux/magic.h>
 #include <sys/ioctl.h>
 #include <sys/mount.h>
 #include <sys/types.h>
 #include <sys/vfs.h>
+/* This needs to be included after sys/mount.h, as since [0] linux/btrfs.h
+ * includes linux/fs.h causing build errors
+ * See: https://github.com/systemd/systemd/issues/8507
+ * [0] https://github.com/torvalds/linux/commit/a28135303a669917002f569aecebd5758263e4aa
+ */
+#include <linux/btrfs.h>
 
 #include "sd-device.h"
 
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