diff --git a/fs/btrfs/btrfs.c b/fs/btrfs/btrfs.c
index aec91a57ec..7eb01c4ff9 100644
--- a/fs/btrfs/btrfs.c
+++ b/fs/btrfs/btrfs.c
@@ -277,7 +277,7 @@ int btrfs_read(const char *file, void *buf, loff_t offset, loff_t len,
 	if (len > inode.size - offset)
 		len = inode.size - offset;
 
-	rd = btrfs_file_read(&root, inr, offset, len, buf);
+	rd = __btrfs_file_read(&root, inr, offset, len, buf);
 	if (rd == -1ULL) {
 		printf("An error occured while reading file %s\n", file);
 		return -1;
diff --git a/fs/btrfs/btrfs.h b/fs/btrfs/btrfs.h
index e36bd89827..32ea2fc53a 100644
--- a/fs/btrfs/btrfs.h
+++ b/fs/btrfs/btrfs.h
@@ -58,16 +58,16 @@ int __btrfs_readlink(const struct __btrfs_root *, u64, char *);
 int btrfs_readlink(struct btrfs_root *root, u64 ino, char *target);
 u64 __btrfs_lookup_path(struct __btrfs_root *, u64, const char *, u8 *,
 		       struct btrfs_inode_item *, int);
-u64 btrfs_file_read(const struct __btrfs_root *, u64, u64, u64, char *);
+u64 __btrfs_file_read(const struct __btrfs_root *, u64, u64, u64, char *);
 
 /* subvolume.c */
 u64 btrfs_get_default_subvol_objectid(void);
 
 /* extent-io.c */
-u64 btrfs_read_extent_inline(struct __btrfs_path *,
+u64 __btrfs_read_extent_inline(struct __btrfs_path *,
 			      struct btrfs_file_extent_item *, u64, u64,
 			      char *);
-u64 btrfs_read_extent_reg(struct __btrfs_path *, struct btrfs_file_extent_item *,
+u64 __btrfs_read_extent_reg(struct __btrfs_path *, struct btrfs_file_extent_item *,
 			   u64, u64, char *);
 
 #endif /* !__BTRFS_BTRFS_H__ */
diff --git a/fs/btrfs/extent-io.c b/fs/btrfs/extent-io.c
index a524145a66..ccf4da3177 100644
--- a/fs/btrfs/extent-io.c
+++ b/fs/btrfs/extent-io.c
@@ -14,7 +14,7 @@
 #include "extent-io.h"
 #include "disk-io.h"
 
-u64 btrfs_read_extent_inline(struct __btrfs_path *path,
+u64 __btrfs_read_extent_inline(struct __btrfs_path *path,
 			     struct btrfs_file_extent_item *extent, u64 offset,
 			     u64 size, char *out)
 {
@@ -66,7 +66,7 @@ err:
 	return -1ULL;
 }
 
-u64 btrfs_read_extent_reg(struct __btrfs_path *path,
+u64 __btrfs_read_extent_reg(struct __btrfs_path *path,
 			  struct btrfs_file_extent_item *extent, u64 offset,
 			  u64 size, char *out)
 {
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 2e3fcad5a8..83d21467d9 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -598,7 +598,7 @@ u64 __btrfs_lookup_path(struct __btrfs_root *root, u64 inr, const char *path,
 	return inr;
 }
 
-u64 btrfs_file_read(const struct __btrfs_root *root, u64 inr, u64 offset,
+u64 __btrfs_file_read(const struct __btrfs_root *root, u64 inr, u64 offset,
 		    u64 size, char *buf)
 {
 	struct __btrfs_path path;
@@ -633,11 +633,11 @@ u64 btrfs_file_read(const struct __btrfs_root *root, u64 inr, u64 offset,
 
 		if (extent->type == BTRFS_FILE_EXTENT_INLINE) {
 			btrfs_file_extent_item_to_cpu_inl(extent);
-			rd = btrfs_read_extent_inline(&path, extent, offset,
+			rd = __btrfs_read_extent_inline(&path, extent, offset,
 						      size, buf);
 		} else {
 			btrfs_file_extent_item_to_cpu(extent);
-			rd = btrfs_read_extent_reg(&path, extent, offset, size,
+			rd = __btrfs_read_extent_reg(&path, extent, offset, size,
 						   buf);
 		}