btrfs: show compiled-in config features at module load time

We want to know if there are debugging features compiled in, this may
affect performance. The message is printed before the sanity checks.
Also kill version.h file that serves no purpose, we don't use any
version tag for kernel module.

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 107c6e23cbc07231315b9095cc2389e91971fda7..0805dd3b856ec8ef70a8a22404d3f5db7c27f339 100644 (file)
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -51,7 +51,6 @@
 #include "print-tree.h"
 #include "xattr.h"
 #include "volumes.h"
-#include "version.h"
 #include "export.h"
 #include "compression.h"
 #include "rcu-string.h"
@@ -1685,6 +1684,18 @@ static void btrfs_interface_exit(void)
                printk(KERN_INFO "btrfs: misc_deregister failed for control device\n");
 }
 
+static void btrfs_print_info(void)
+{
+       printk(KERN_INFO "Btrfs loaded"
+#ifdef CONFIG_BTRFS_DEBUG
+                       ", debug=on"
+#endif
+#ifdef CONFIG_BTRFS_FS_CHECK_INTEGRITY
+                       ", integrity-checker=on"
+#endif
+                       "\n");
+}
+
 static int __init init_btrfs_fs(void)
 {
        int err;
@@ -1733,9 +1744,9 @@ static int __init init_btrfs_fs(void)
 
        btrfs_init_lockdep();
 
+       btrfs_print_info();
        btrfs_test_free_space_cache();
 
-       printk(KERN_INFO "%s loaded\n", BTRFS_BUILD_VERSION);
        return 0;
 
 unregister_ioctl:

diff --git a/fs/btrfs/version.h b/fs/btrfs/version.h
deleted file mode 100644 (file)
index 9bf3946..0000000
--- a/fs/btrfs/version.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#ifndef __BTRFS_VERSION_H
-#define __BTRFS_VERSION_H
-#define BTRFS_BUILD_VERSION "Btrfs"
-#endif