Re: [PATCH v13 4/7] fsdax: Introduce dax_lock_mapping_entry()

2022-04-20 Thread Darrick J. Wong
On Tue, Apr 19, 2022 at 12:50:42PM +0800, Shiyang Ruan 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 corresponding to this file's mapping,index. > And output

[PATCH v13 4/7] fsdax: Introduce dax_lock_mapping_entry()

2022-04-18 Thread Shiyang Ruan
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 corresponding to this file's mapping,index. And output the page corresponding to the specific dax entry for caller use.