ocfs2: make room for unwritten extents flag

Due to the size of our group bitmaps, we'll never have a leaf node extent
record with more than 16 bits worth of clusters. Split e_clusters up so that
leaf nodes can get a flags field where we can mark unwritten extents.
Interior nodes whose length references all the child nodes beneath it can't
split their e_clusters field, so we use a union to preserve sizing there.

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index f516619a3744..36176018b4b4 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1127,7 +1127,6 @@ static int ocfs2_check_range_for_holes(struct inode *inode, loff_t pos,
                                        size_t count)
 {
         int ret = 0;
-        unsigned int extent_flags;
         u32 cpos, clusters, extent_len, phys_cpos;
         struct super_block *sb = inode->i_sb;
 
@@ -1135,14 +1134,13 @@ static int ocfs2_check_range_for_holes(struct inode *inode, loff_t pos,
         clusters = ocfs2_clusters_for_bytes(sb, pos + count) - cpos;
 
         while (clusters) {
-                ret = ocfs2_get_clusters(inode, cpos, &phys_cpos, &extent_len,
-                                         &extent_flags);
+                ret = ocfs2_get_clusters(inode, cpos, &phys_cpos, &extent_len);
                 if (ret < 0) {
                         mlog_errno(ret);
                         goto out;
                 }
 
-                if (phys_cpos == 0 || (extent_flags & OCFS2_EXT_UNWRITTEN)) {
+                if (phys_cpos == 0) {
                         ret = 1;
                         break;
                 }