Re: [PATCH 2/5] dax: fix cache flush on PMD-mapped pages

2022-01-23 Thread Christoph Hellwig
On Fri, Jan 21, 2022 at 03:55:12PM +0800, Muchun Song wrote: > The flush_cache_page() only remove a PAGE_SIZE sized range from the cache. > However, it does not cover the full pages in a THP except a head page. > Replace it with flush_cache_range() to fix this issue. > > Fixes: f729c8c9b24f

[PATCH 2/5] dax: fix cache flush on PMD-mapped pages

2022-01-20 Thread Muchun Song
The flush_cache_page() only remove a PAGE_SIZE sized range from the cache. However, it does not cover the full pages in a THP except a head page. Replace it with flush_cache_range() to fix this issue. Fixes: f729c8c9b24f ("dax: wrprotect pmd_t in dax_mapping_entry_mkclean") Signed-off-by: Muchun