1 files changed, 5 insertions, 8 deletions

diff --git a/fs/sync.c b/fs/sync.c
index d104591b066b..36752a683481 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -295,10 +295,11 @@ SYSCALL_DEFINE1(fdatasync, unsigned int, fd)
  */
 int generic_write_sync(struct file *file, loff_t pos, loff_t count)
 {
-        if (!(file->f_flags & O_SYNC) && !IS_SYNC(file->f_mapping->host))
+        if (!(file->f_flags & O_DSYNC) && !IS_SYNC(file->f_mapping->host))
                 return 0;
         return vfs_fsync_range(file, file->f_path.dentry, pos,
-                               pos + count - 1, 1);
+                               pos + count - 1,
+                               (file->f_flags & __O_SYNC) ? 0 : 1);
 }
 EXPORT_SYMBOL(generic_write_sync);
 
@@ -452,9 +453,7 @@ int do_sync_mapping_range(struct address_space *mapping, loff_t offset,
 
         ret = 0;
         if (flags & SYNC_FILE_RANGE_WAIT_BEFORE) {
-                ret = wait_on_page_writeback_range(mapping,
-                                        offset >> PAGE_CACHE_SHIFT,
-                                        endbyte >> PAGE_CACHE_SHIFT);
+                ret = filemap_fdatawait_range(mapping, offset, endbyte);
                 if (ret < 0)
                         goto out;
         }
@@ -467,9 +466,7 @@ int do_sync_mapping_range(struct address_space *mapping, loff_t offset,
         }
 
         if (flags & SYNC_FILE_RANGE_WAIT_AFTER) {
-                ret = wait_on_page_writeback_range(mapping,
-                                        offset >> PAGE_CACHE_SHIFT,
-                                        endbyte >> PAGE_CACHE_SHIFT);
+                ret = filemap_fdatawait_range(mapping, offset, endbyte);
         }
 out:
         return ret;