Re: [PATCH v10 5/9] fsdax: Introduce dax_load_page()

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在 2022/2/16 9:34, Dan Williams 写道:
On Thu, Jan 27, 2022 at 4:41 AM Shiyang Ruan <ruansy.fnst@xxxxxxxxxxx> wrote:

The current dax_lock_page() locks dax entry by obtaining mapping and
index in page.  To support 1-to-N RMAP in NVDIMM, we need a new function
to lock a specific dax entry

I do not see a call to dax_lock_entry() in this function, what keeps
this lookup valid after xas_unlock_irq()?

I am not sure if I understood your advice correctly: You said dax_lock_entry() is not necessary in v9[1]. So, I deleted it.

[1]: https://lore.kernel.org/linux-xfs/CAPcyv4jVDfpHb1DCW+NLXH2YBgLghCVy8o6wrc02CXx4g-Bv7Q@xxxxxxxxxxxxxx/


--
Thanks,
Ruan.





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