Kostya, ms is not affected, RedHat bz ticket: https://bugzilla.redhat.com/show_bug.cgi?id=1361682

On 07/29/2016 08:15 AM, Konstantin Khorenko wrote:
Maxim, will you send the patch to mainstream as well?

--
Best regards,

Konstantin Khorenko,
Virtuozzo Linux Kernel Team

On 07/26/2016 12:01 AM, Maxim Patlasov wrote:
ext4_iget() sets this bit for directories. Let's do the same in ext4_mkdir(). Otherwise, the behaviour of vfs_rename (on top of ext4) varies depending on
how the in-core inode was born: via lookup or mkdir.

The key place in vfs_rename sensible to the change is:

    if (flags && !rename2)
        return -EINVAL;

Signed-off-by: Maxim Patlasov <[email protected]>
---
 fs/ext4/namei.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 0adc6df..bebe698 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2413,6 +2413,7 @@ retry:

     inode->i_op = &ext4_dir_inode_operations.ops;
     inode->i_fop = &ext4_dir_operations;
+    inode->i_flags |= S_IOPS_WRAPPER;
     err = ext4_init_new_dir(handle, dir, inode);
     if (err)
         goto out_clear_inode;

.


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