Reg:dentry->d_mounts value

[SATHISH.J]

Hi,

Sorry to disturb you all.

In the d_alloc() function in the vfs layer of the filesystem(2.2.14
kernel) we can see the following: 

        dentry->d_mounts = dentry;
        dentry->d_covers = dentry;
        
Why should both the above be assigned the values of dentry. Wher elase is
this used. Please help me with this information. 

Thanks in advance,
Regards,
sathish.j

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