[PATCH 1/2] fs: ubifs: zero initialize allocated inode

[Sascha Hauer <s.hauer@pengutronix.de>]

UBIFS uses kmem_cache_alloc() to allocate an ubifs_inode. The memory
returned from kmem_cache_alloc() is not zeroed. ubifs_alloc_inode()
zeroes all fields in the ubifs_inode except the embedded struct inode.
In Linux this is done in the kmem_cache constructor function which calls
inode_init_once(). In barebox we have the constructor function as well,
but we don't have an equivalent of inode_init_once(), so the constructor
is empty.  zero the inode in the constructor instead so that barebox
gets a zeroed inode.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 fs/ubifs/super.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 45037b42ea..8eb8e574a8 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1128,6 +1128,9 @@ static void kill_ubifs_super(struct super_block *s)
  */
 static void inode_slab_ctor(void *obj)
 {
+	struct ubifs_inode *ui = obj;
+
+	memset(&ui->vfs_inode, 0, sizeof(ui->vfs_inode));
 }
 
 static int __init ubifs_init(void)
-- 
2.47.3