1 files changed, 12 insertions, 4 deletions

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 7f9ea9271ebe..3191b52aafb0 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -96,8 +96,9 @@ out:
 }
 
 static const struct vm_operations_struct f2fs_file_vm_ops = {
-        .fault        = filemap_fault,
-        .page_mkwrite = f2fs_vm_page_mkwrite,
+        .fault          = filemap_fault,
+        .page_mkwrite   = f2fs_vm_page_mkwrite,
+        .remap_pages    = generic_file_remap_pages,
 };
 
 static int need_to_sync_dir(struct f2fs_sb_info *sbi, struct inode *inode)
@@ -137,6 +138,9 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
         if (ret)
                 return ret;
 
+        /* guarantee free sections for fsync */
+        f2fs_balance_fs(sbi);
+
         mutex_lock(&inode->i_mutex);
 
         if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
@@ -407,6 +411,8 @@ int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
                 struct dnode_of_data dn;
                 struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
 
+                f2fs_balance_fs(sbi);
+
                 mutex_lock_op(sbi, DATA_TRUNC);
                 set_new_dnode(&dn, inode, NULL, NULL, 0);
                 err = get_dnode_of_data(&dn, index, RDONLY_NODE);
@@ -534,7 +540,6 @@ static long f2fs_fallocate(struct file *file, int mode,
                                 loff_t offset, loff_t len)
 {
         struct inode *inode = file->f_path.dentry->d_inode;
-        struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
         long ret;
 
         if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
@@ -545,7 +550,10 @@ static long f2fs_fallocate(struct file *file, int mode,
         else
                 ret = expand_inode_data(inode, offset, len, mode);
 
-        f2fs_balance_fs(sbi);
+        if (!ret) {
+                inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+                mark_inode_dirty(inode);
+        }
         return ret;
 }