From: Kent Overstreet <kent.overstreet@linux.dev>
Date: Sat, 3 Dec 2022 20:44:54 +0000 (-0500)
Subject: bcachefs: Fix compat path for old inode formats
X-Git-Tag: io_uring-6.7-2023-11-10~119^2~598
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=e9a1da97377f89f09e6b0b484554fe7a0e2dbe3e;p=linux-block.git

bcachefs: Fix compat path for old inode formats

Old inode formats don't have all the fields of the current inode format:
when unpacking inodes in the current format we can thus skip zeroing out
the destination buffer, but that doesn't work on for the old formats.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
---

diff --git a/fs/bcachefs/inode.c b/fs/bcachefs/inode.c
index 141cf21e2951..6e7ba2e6fe33 100644
--- a/fs/bcachefs/inode.c
+++ b/fs/bcachefs/inode.c
@@ -213,6 +213,8 @@ static int bch2_inode_unpack_v2(struct bch_inode_unpacked *unpacked,
 int bch2_inode_unpack(struct bkey_s_c k,
 		      struct bch_inode_unpacked *unpacked)
 {
+	memset(unpacked, 0, sizeof(*unpacked));
+
 	switch (k.k->type) {
 	case KEY_TYPE_inode: {
 		struct bkey_s_c_inode inode = bkey_s_c_to_inode(k);