On Wed, Feb 03, 2016 at 02:40:19PM -0800, Andrew Morton wrote: > On Wed, 3 Feb 2016 18:14:16 +0300 "Kirill A. Shutemov" > <[email protected]> wrote: > > > rmap_walk_locked() is the same as rmap_walk(), but caller takes care > > about relevant rmap lock. It only supports anonymous pages for now. > > > > It's preparation to switch THP splitting from custom rmap walk in > > freeze_page()/unfreeze_page() to generic one. > > > > ... > > > > +/* Like rmap_walk, but caller holds relevant rmap lock */ > > +int rmap_walk_locked(struct page *page, struct rmap_walk_control *rwc) > > +{ > > + /* only for anon pages for now */ > > + VM_BUG_ON_PAGE(!PageAnon(page) || PageKsm(page), page); > > + return rmap_walk_anon(page, rwc, true); > > +} > > Should be rmap_walk_anon_locked()?
I leave interface open for further extension for file mappings, once it will be needed. Interface is mirroring plain rmap_walk() If you prefer to rename the function, I can do it too. -- Kirill A. Shutemov
