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[PATCH 4.12 131/196] ubifs: Set double hash cookie also for RENAME_EXCHANGE

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  [PATCH 4.12 131/196] ubifs: Set double hash cookie also for RENAME_EXCHANGE Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-07-25 21:30 +0200

#1696064 — [PATCH 4.12 131/196] ubifs: Set double hash cookie also for RENAME_EXCHANGE

4.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Richard Weinberger <richard@nod.at>

commit a6664433d383eeb71cbdeb9aea2c66eeea76e742 upstream.

We developed RENAME_EXCHANGE and UBIFS_FLG_DOUBLE_HASH more or less in
parallel and this case was forgotten. :-(

Fixes: d63d61c16972 ("ubifs: Implement UBIFS_FLG_DOUBLE_HASH")
Signed-off-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 fs/ubifs/journal.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/ubifs/journal.c
+++ b/fs/ubifs/journal.c
@@ -984,6 +984,7 @@ int ubifs_jnl_xrename(struct ubifs_info
 	dent1->nlen = cpu_to_le16(fname_len(snd_nm));
 	memcpy(dent1->name, fname_name(snd_nm), fname_len(snd_nm));
 	dent1->name[fname_len(snd_nm)] = '\0';
+	set_dent_cookie(c, dent1);
 	zero_dent_node_unused(dent1);
 	ubifs_prep_grp_node(c, dent1, dlen1, 0);
 
@@ -996,6 +997,7 @@ int ubifs_jnl_xrename(struct ubifs_info
 	dent2->nlen = cpu_to_le16(fname_len(fst_nm));
 	memcpy(dent2->name, fname_name(fst_nm), fname_len(fst_nm));
 	dent2->name[fname_len(fst_nm)] = '\0';
+	set_dent_cookie(c, dent2);
 	zero_dent_node_unused(dent2);
 	ubifs_prep_grp_node(c, dent2, dlen2, 0);
 

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