linux-kernel - [PATCH 1/1] bcachefs: Move BCACHEFS_STATFS

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Message-ID: <20240507111124.118520-1-pvorel@suse.cz>
Date: Tue,  7 May 2024 13:11:24 +0200
From: Petr Vorel <pvorel@...e.cz>
To: linux-bcachefs@...r.kernel.org
Cc: Petr Vorel <pvorel@...e.cz>,
	Kent Overstreet <kent.overstreet@...ux.dev>,
	Su Yue <l@...enly.org>,
	Brian Foster <bfoster@...hat.com>,
	Coly Li <colyli@...e.de>,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] bcachefs: Move BCACHEFS_STATFS_MAGIC to UAPI magic.h

There are other bcachefs magic definitions: BCACHE_MAGIC, BCHFS_MAGIC,
which use UUID_INIT() and are used only in libbcachefs. Therefore move
to <linux/magic.h> only BCACHEFS_STATFS_MAGIC, which can be used outside
of libbcachefs for f_type field in struct statfs in statfs() or fstatfs().

Keeping non-standard name BCACHEFS_STATFS_MAGIC instead of renaming it
to more generic BCACHEFS_MAGIC to not confuse with the other bcachefs
definitions.

Suggested-by: Su Yue <l@...enly.org>
Signed-off-by: Petr Vorel <pvorel@...e.cz>
---
 fs/bcachefs/bcachefs_format.h | 2 --
 fs/bcachefs/fs.c              | 1 +
 include/uapi/linux/magic.h    | 2 ++
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/bcachefs/bcachefs_format.h b/fs/bcachefs/bcachefs_format.h
index f7fbfccd2b1e..52e03f13b780 100644
--- a/fs/bcachefs/bcachefs_format.h
+++ b/fs/bcachefs/bcachefs_format.h
@@ -1275,8 +1275,6 @@ enum bch_compression_opts {
 	UUID_INIT(0xc68573f6, 0x66ce, 0x90a9,				\
 		  0xd9, 0x6a, 0x60, 0xcf, 0x80, 0x3d, 0xf7, 0xef)
 
-#define BCACHEFS_STATFS_MAGIC		0xca451a4e
-
 #define JSET_MAGIC		__cpu_to_le64(0x245235c1a3625032ULL)
 #define BSET_MAGIC		__cpu_to_le64(0x90135c78b99e07f5ULL)
 
diff --git a/fs/bcachefs/fs.c b/fs/bcachefs/fs.c
index fce690007edf..1c856ae2b0e2 100644
--- a/fs/bcachefs/fs.c
+++ b/fs/bcachefs/fs.c
@@ -27,6 +27,7 @@
 #include "super.h"
 #include "xattr.h"
 
+#include <uapi/linux/magic.h>
 #include <linux/aio.h>
 #include <linux/backing-dev.h>
 #include <linux/exportfs.h>
diff --git a/include/uapi/linux/magic.h b/include/uapi/linux/magic.h
index 1b40a968ba91..45c8f4916167 100644
--- a/include/uapi/linux/magic.h
+++ b/include/uapi/linux/magic.h
@@ -103,4 +103,6 @@
 #define SECRETMEM_MAGIC		0x5345434d	/* "SECM" */
 #define PID_FS_MAGIC		0x50494446	/* "PIDF" */
 
+#define BCACHEFS_STATFS_MAGIC		0xca451a4e
+
 #endif /* __LINUX_MAGIC_H__ */
-- 
2.43.0