fat: Opencode sync_page_range_nolock()
fat_cont_expand() is the only user of sync_page_range_nolock(). It's also the
only user of generic_osync_inode() which does not have a file open. So
opencode needed actions for FAT so that we can convert generic_osync_inode() to
a standard syncing path.
Update a comment about generic_osync_inode().
CC: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Jan Kara <jack@suse.cz>
diff --git a/fs/fat/file.c b/fs/fat/file.c
index f042b96..e8c159d 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -176,8 +176,26 @@
inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;
mark_inode_dirty(inode);
- if (IS_SYNC(inode))
- err = sync_page_range_nolock(inode, mapping, start, count);
+ if (IS_SYNC(inode)) {
+ int err2;
+
+ /*
+ * Opencode syncing since we don't have a file open to use
+ * standard fsync path.
+ */
+ err = filemap_fdatawrite_range(mapping, start,
+ start + count - 1);
+ err2 = sync_mapping_buffers(mapping);
+ if (!err)
+ err = err2;
+ err2 = write_inode_now(inode, 1);
+ if (!err)
+ err = err2;
+ if (!err) {
+ err = filemap_fdatawait_range(mapping, start,
+ start + count - 1);
+ }
+ }
out:
return err;
}