[PATCH v4 06/15] ovl: pass the stack index on ovl_lookup_data

[Amir Goldstein <amir73il@xxxxxxxxx>]

This is needed for looking up copy up origin.

Signed-off-by: Amir Goldstein <amir73il@xxxxxxxxx>
---
 fs/overlayfs/namei.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/overlayfs/namei.c b/fs/overlayfs/namei.c
index 7c2b038..6fabbc1 100644
--- a/fs/overlayfs/namei.c
+++ b/fs/overlayfs/namei.c
@@ -21,6 +21,7 @@ struct ovl_lookup_data {
 	bool opaque;
 	bool stop;
 	bool last;
+	int idx;
 	char *redirect;
 };
 
@@ -258,6 +259,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
 		.opaque = false,
 		.stop = false,
 		.last = !poe->numlower,
+		.idx = 0,
 		.redirect = NULL,
 	};
 
@@ -299,6 +301,7 @@ struct dentry *ovl_lookup(struct inode *dir, struct dentry *dentry,
 		struct path lowerpath = poe->lowerstack[i];
 
 		d.last = i == poe->numlower - 1;
+		d.idx = i + 1;
 		err = ovl_lookup_layer(lowerpath.dentry, &d, &this);
 		if (err)
 			goto out_put;
-- 
2.7.4