filesystem: Details of mount_ref_count in struct mount

[manty kuma <mantykuma@xxxxxxxxx>]

Hi,

I am looking into an issue where unmounting /data is failing.

I receive -EBUSY as the sum off all mnt_count(mnt->mnt_pcp->mnt_count) of all cpu's > 2 (the value in my case is 3).

I am debugging from linux crash dump.
Is there any way that I can know the owners/responsible drivers that have incereased this refcount and left it like that without decrementing?

Kindly share any helpful information. Thank you.

Best Regards,

Manty

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