Thank you Jeff!
št 30. 9. 2021 o 18:30 Jeff Layton <jlayton@xxxxxxxxxx> napísal(a):
On Thu, 2021-09-30 at 14:08 +0200, Milan Kováčik wrote:
> Hi guys,
>
> what are the conditions for a client_dentry_callback_t to be triggered?
> Also, what's the use case for this callback?
>
It gets triggered when a dentry should be invalidated, typically when
trimming caps or leased dentries.
so for the callback to fire I have to hold a reference (a pointer) to a directory entry, whose caps or lease state have been changed by another Cephfs client?
Also is the struct ceph_client_callback_args callbacks semantics documented somewhere else besides the cephfs/ceph_ll_ceph.h file?
Thanks!
milan
> FWIW I've not been able to trigger my client_dentry_callback_t callback. On
> the other hand, my client_ino_callback_t callback gets triggered every now
> and then in my test setup (a single node, VM 16.2.5 deployment with a linux
> kernel client mount competing with a custom user-space client mount).
>
> Thanks a lot!
> milan
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Jeff Layton <jlayton@xxxxxxxxxx>
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