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authorChris Mason <chris.mason@oracle.com>2008-02-20 16:02:51 -0500
committerChris Mason <chris.mason@oracle.com>2008-09-25 11:04:00 -0400
commit55d474148982785dd8995dc690febad3a16a2c46 (patch)
tree28cf1f279f1842773db63516fae107a3bc5b9eab
parent2e1a992e3103624af48f1501aaad4e4d8317f88c (diff)
Btrfs: Disable sysfs files on older kernels
Signed-off-by: Chris Mason <chris.mason@oracle.com>
-rw-r--r--fs/btrfs/sysfs.c34
1 files changed, 34 insertions, 0 deletions
diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
index 973d56e0569..1cf4f4f8d2c 100644
--- a/fs/btrfs/sysfs.c
+++ b/fs/btrfs/sysfs.c
@@ -28,6 +28,7 @@
#include "disk-io.h"
#include "transaction.h"
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25)
static ssize_t root_blocks_used_show(struct btrfs_root *root, char *buf)
{
return snprintf(buf, PAGE_SIZE, "%llu\n",
@@ -265,3 +266,36 @@ void btrfs_exit_sysfs()
{
kset_unregister(btrfs_kset);
}
+
+#else
+
+int btrfs_sysfs_add_super(struct btrfs_fs_info *fs)
+{
+ return 0;
+}
+
+int btrfs_sysfs_add_root(struct btrfs_root *root)
+{
+ return 0;
+}
+
+void btrfs_sysfs_del_root(struct btrfs_root *root)
+{
+ return;
+}
+
+void btrfs_sysfs_del_super(struct btrfs_fs_info *fs)
+{
+ return;
+}
+
+int btrfs_init_sysfs()
+{
+ return 0;
+}
+
+void btrfs_exit_sysfs()
+{
+ return;
+}
+#endif