On Tue, 14 Jul 2015 18:37:34 +0300 Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx> wrote: > This patchset makes pagemap useable again in the safe way (after row hammer > bug it was made CAP_SYS_ADMIN-only). This patchset restores access for > non-privileged users but hides PFNs from them. Documentation/vm/pagemap.txt hasn't been updated to describe these privilege issues? > Also it adds bit 'map-exlusive' which is set if page is mapped only here: > it helps in estimation of working set without exposing pfns and allows to > distinguish CoWed and non-CoWed private anonymous pages. > > Second patch removes page-shift bits and completes migration to the new > pagemap format: flags soft-dirty and mmap-exlusive are available only > in the new format. I'm not really seeing a description of the new format in these changelogs. Precisely what got removed, what got added and which capabilities change the output in what manner? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>