diff --git a/checkpoint.cc b/checkpoint.cc
index 76806f3..1c45967 100644
--- a/checkpoint.cc
+++ b/checkpoint.cc
@@ -49,8 +49,8 @@
   return page;
 }
 
-int F2fs::F2fsWriteMetaPage(Page *page, WritebackControl *wbc) {
-  int err;
+zx_status_t F2fs::F2fsWriteMetaPage(Page *page, WritebackControl *wbc) {
+  zx_status_t err;
 
   WaitOnPageWriteback(page);
 
@@ -151,10 +151,10 @@
 // }
 #endif
 
-int F2fs::CheckOrphanSpace() {
+zx_status_t F2fs::CheckOrphanSpace() {
   f2fs_sb_info &sbi = SbInfo();
   uint32_t max_orphans;
-  int err = 0;
+  zx_status_t err = 0;
 
   /*
    * considering 512 blocks in a segment 5 blocks are needed for cp
@@ -165,7 +165,7 @@
   max_orphans = (sbi.blocks_per_seg - 5) * F2FS_ORPHANS_PER_BLOCK;
   mtx_lock(&sbi.orphan_inode_mutex);
   if (sbi.n_orphans >= max_orphans)
-    err = -ENOSPC;
+    err = ZX_ERR_NO_SPACE;
   mtx_unlock(&sbi.orphan_inode_mutex);
   return err;
 }
diff --git a/f2fs.h b/f2fs.h
index 7b6d9da..713cddd 100644
--- a/f2fs.h
+++ b/f2fs.h
@@ -143,7 +143,7 @@
   // checkpoint.cc
   Page *GetMetaPage(pgoff_t index);
   Page *GrabMetaPage(pgoff_t index);
-  int F2fsWriteMetaPage(Page *page, WritebackControl *wbc);
+  zx_status_t F2fsWriteMetaPage(Page *page, WritebackControl *wbc);
 #if 0  // porting needed
   // int F2fsWriteMetaPages(address_space *mapping, WritebackControl *wbc);
 #endif
@@ -151,7 +151,7 @@
 #if 0  // porting needed
   // int F2fsSetMetaPageDirty(Page *page);
 #endif
-  int CheckOrphanSpace();
+  zx_status_t CheckOrphanSpace();
   void AddOrphanInode(nid_t ino);
   void RemoveOrphanInode(nid_t ino);
   void RecoverOrphanInode(nid_t ino);
diff --git a/segment.cc b/segment.cc
index 24c346b..97f4905 100644
--- a/segment.cc
+++ b/segment.cc
@@ -6,6 +6,8 @@
 #include <sys/stat.h>
 
 #include "f2fs.h"
+#include "zircon/errors.h"
+#include "zircon/types.h"
 
 namespace f2fs {
 
@@ -1223,14 +1225,14 @@
   mtx_unlock(&curseg->curseg_mutex);
 }
 
-int SegMgr::WriteMetaPage(Page *page, struct WritebackControl *wbc) {
+zx_status_t SegMgr::WriteMetaPage(Page *page, struct WritebackControl *wbc) {
 #if 0  // porting needed
   // if (wbc && wbc->for_reclaim)
   // 	return kAopWritepageActivate;
 #endif
   SetPageWriteback(page);
   SubmitWritePage(page, page->index, META);
-  return 0;
+  return ZX_OK;
 }
 
 void SegMgr::WriteNodePage(Page *page, unsigned int nid, block_t old_blkaddr,
diff --git a/segment.h b/segment.h
index 39c03bd..a2dbcb5 100644
--- a/segment.h
+++ b/segment.h
@@ -5,6 +5,7 @@
 #ifndef F2FS_SEGMENT_H_
 #define F2FS_SEGMENT_H_
 
+#include "zircon/types.h"
 namespace f2fs {
 
 /* constant macro */
@@ -315,7 +316,7 @@
   int __GetSegmentType(Page *page, enum page_type p_type);
   void DoWritePage(Page *page, block_t old_blkaddr, block_t *new_blkaddr, struct f2fs_summary *sum,
                    enum page_type p_type);
-  int WriteMetaPage(Page *page, struct WritebackControl *wbc);
+  zx_status_t WriteMetaPage(Page *page, struct WritebackControl *wbc);
   void WriteNodePage(Page *page, unsigned int nid, block_t old_blkaddr, block_t *new_blkaddr);
   void WriteDataPage(VnodeF2fs *vnode, Page *page, struct dnode_of_data *dn, block_t old_blkaddr,
                      block_t *new_blkaddr);