[PATCH 18/30] ocfs2: abstract the zero extent list count check

[Joseph Qi <joseph.qi@linux.alibaba.com>]

Fold the l_count == 0 test into a predicate, the first of the extent list
group guarded by ocfs2_dinode_has_extents().

No functional change intended.

Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
---
 fs/ocfs2/inode.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index b4ef4077e09c..70fb032ce891 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -250,6 +250,11 @@ static bool ocfs2_dinode_has_refcount_without_loc(struct ocfs2_dinode *di)
 		!di->i_refcount_loc;
 }
 
+static bool ocfs2_dinode_has_zero_extent_count(struct ocfs2_dinode *di)
+{
+	return le16_to_cpu(di->id2.i_list.l_count) == 0;
+}
+
 void ocfs2_set_inode_flags(struct inode *inode)
 {
 	unsigned int flags = OCFS2_I(inode)->ip_attr;
@@ -1897,7 +1902,7 @@ int ocfs2_validate_inode_block(struct super_block *sb,
 		u16 count = le16_to_cpu(el->l_count);
 		u16 next_free = le16_to_cpu(el->l_next_free_rec);
 
-		if (count == 0) {
+		if (ocfs2_dinode_has_zero_extent_count(di)) {
 			rc = ocfs2_error(sb,
 					 "Invalid dinode %llu: extent list l_count is zero\n",
 					 (unsigned long long)bh->b_blocknr);
-- 
2.39.3