prepend_path() needs to reinitialize dentry/vfsmount/mnt on restarts
... and equivalent is needed in 3.12; it's broken there as well
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/dcache.c b/fs/dcache.c
index eacc853..a9dd384 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -2912,9 +2912,9 @@
const struct path *root,
char **buffer, int *buflen)
{
- struct dentry *dentry = path->dentry;
- struct vfsmount *vfsmnt = path->mnt;
- struct mount *mnt = real_mount(vfsmnt);
+ struct dentry *dentry;
+ struct vfsmount *vfsmnt;
+ struct mount *mnt;
int error = 0;
unsigned seq, m_seq = 0;
char *bptr;
@@ -2929,6 +2929,9 @@
bptr = *buffer;
blen = *buflen;
error = 0;
+ dentry = path->dentry;
+ vfsmnt = path->mnt;
+ mnt = real_mount(vfsmnt);
read_seqbegin_or_lock(&rename_lock, &seq);
while (dentry != root->dentry || vfsmnt != root->mnt) {
struct dentry * parent;