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-rw-r--r--fs/btrfs/compat.h24
1 files changed, 24 insertions, 0 deletions
diff --git a/fs/btrfs/compat.h b/fs/btrfs/compat.h
new file mode 100644
index 000000000000..cd6598b169df
--- /dev/null
+++ b/fs/btrfs/compat.h
@@ -0,0 +1,24 @@
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#define btrfs_drop_nlink(inode) drop_nlink(inode)
+#define btrfs_inc_nlink(inode) inc_nlink(inode)
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,27)
+static inline struct dentry *d_obtain_alias(struct inode *inode)
+{
+ struct dentry *d;
+
+ if (!inode)
+ return NULL;
+ if (IS_ERR(inode))
+ return ERR_CAST(inode);
+
+ d = d_alloc_anon(inode);
+ if (!d)
+ iput(inode);
+ return d;
+}
+#endif
+
+#endif /* _COMPAT_H_ */