1 files changed, 8 insertions, 4 deletions

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index c58e33075719..7d8b96275092 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -659,16 +659,19 @@ static int expand_inode_data(struct inode *inode, loff_t offset,
         off_start = offset & (PAGE_CACHE_SIZE - 1);
         off_end = (offset + len) & (PAGE_CACHE_SIZE - 1);
 
+        f2fs_lock_op(sbi);
+
         for (index = pg_start; index <= pg_end; index++) {
                 struct dnode_of_data dn;
 
-                f2fs_lock_op(sbi);
+                if (index == pg_end && !off_end)
+                        goto noalloc;
+
                 set_new_dnode(&dn, inode, NULL, NULL, 0);
                 ret = f2fs_reserve_block(&dn, index);
-                f2fs_unlock_op(sbi);
                 if (ret)
                         break;
-
+noalloc:
                 if (pg_start == pg_end)
                         new_size = offset + len;
                 else if (index == pg_start && off_start)
@@ -683,8 +686,9 @@ static int expand_inode_data(struct inode *inode, loff_t offset,
                 i_size_read(inode) < new_size) {
                 i_size_write(inode, new_size);
                 mark_inode_dirty(inode);
-                f2fs_write_inode(inode, NULL);
+                update_inode_page(inode);
         }
+        f2fs_unlock_op(sbi);
 
         return ret;
 }