From: "J. Bruce Fields" <bfields@xxxxxxxxxx>
I believe this can only happen in the case of a corrupted filesystem.
So -EIO looks like the appropriate error.
Signed-off-by: J. Bruce Fields <bfields@xxxxxxxxxx>
---
fs/dcache.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/dcache.c b/fs/dcache.c
index 960a2e7..f6ab71b 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2643,6 +2643,11 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
dput(new);
return ERR_PTR(-EIO);
}
+ if (d_ancestor(new, dentry)) {
+ spin_unlock(&inode->i_lock);
+ dput(new);
+ return ERR_PTR(-EIO);
+ }
write_seqlock(&rename_lock);
__d_materialise_dentry(dentry, new);
write_sequnlock(&rename_lock);
--
1.7.9.5
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