ocfs2: always read both high and low parts of dinode link count

When filesystem is using indexed-dirs feature, maximum link count values
can spill over to i_links_count_hi, up to OCFS2_DX_LINK_MAX links. 
ocfs2_read_links_count() checks for OCFS2_INDEXED_DIR_FL flag in dinode,
but this flag is only valid for directories so for files the check causes
high part of the link count not being read back from file dinodes
resulting in wrong link count value when file has >65535 links.

As ocfs2_set_links_count() always writes both high and low parts of link
count, the flag check on reading may be removed.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Alexey Asemov <[email protected]>
Reviewed-by: Joseph Qi <[email protected]>
Cc: Mark Fasheh <[email protected]>
Cc: Joel Becker <[email protected]>
Cc: Junxiao Bi <[email protected]>
Cc: Changwei Ge <[email protected]>
Cc: Gang He <[email protected]>
Cc: Jun Piao <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

fs/ocfs2/ocfs2.h

@@ -560,8 +560,7 @@ static inline unsigned int ocfs2_read_links_count(struct ocfs2_dinode *di)
 	u32 nlink = le16_to_cpu(di->i_links_count);
 	u32 hi = le16_to_cpu(di->i_links_count_hi);
 
-	if (di->i_dyn_features & cpu_to_le16(OCFS2_INDEXED_DIR_FL))
-		nlink |= (hi << OCFS2_LINKS_HI_SHIFT);
+	nlink |= (hi << OCFS2_LINKS_HI_SHIFT);
 
 	return nlink;
 }