[PATCH v3 08/31] ocfs2: abstract the dinode orphaned slot check

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

Fold the OCFS2_ORPHANED_FL guarded i_orphaned_slot range test into a
predicate.  The flag test stays inside it: i_orphaned_slot is only
meaningful when the inode is actually orphaned, so a bare range test
would reject valid inodes whose orphaned slot field is stale.

No functional change intended.

Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
---
 fs/ocfs2/inode.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 3be98328925d..fd9613a95802 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -117,6 +117,13 @@ static bool ocfs2_dinode_has_bad_suballoc_bit(struct super_block *sb,
 	return le16_to_cpu(di->i_suballoc_bit) >= ocfs2_suballoc_bits_per_block(sb);
 }
 
+static bool ocfs2_dinode_has_bad_orphaned_slot(struct super_block *sb,
+					       struct ocfs2_dinode *di)
+{
+	return (le32_to_cpu(di->i_flags) & OCFS2_ORPHANED_FL) &&
+		le16_to_cpu(di->i_orphaned_slot) >= OCFS2_SB(sb)->max_slots;
+}
+
 static bool ocfs2_valid_inode_mode(umode_t mode)
 {
 	return fs_umode_to_ftype(mode) != FT_UNKNOWN;
@@ -1614,8 +1621,7 @@ int ocfs2_validate_inode_block(struct super_block *sb,
 		goto bail;
 	}
 
-	if ((le32_to_cpu(di->i_flags) & OCFS2_ORPHANED_FL) &&
-	    le16_to_cpu(di->i_orphaned_slot) >= OCFS2_SB(sb)->max_slots) {
+	if (ocfs2_dinode_has_bad_orphaned_slot(sb, di)) {
 		rc = ocfs2_error(sb, "Invalid dinode %llu: orphaned slot %u\n",
 				 (unsigned long long)bh->b_blocknr,
 				 le16_to_cpu(di->i_orphaned_slot));
-- 
2.39.3