search for: insert_page

On Fri, Nov 06, 2020 at 01:26:50PM -0800, Ralph Campbell wrote: > > On 11/6/20 12:03 AM, Christoph Hellwig wrote: >> I hate the extra pin count magic here. IMHO we really need to finish >> off the series to get rid of the extra references on the ZONE_DEVICE >> pages first. > > First, thanks for the review comments. > > I don't like the extra refcount

...x_probe() and represent non-volatile memory. The device can be mmap()'ed which calls dax_mmap() which sets vma->vm_flags | VM_HUGEPAGE. A CPU page fault will result in a PTE, PMD, or PUD sized page (but not compound) to be inserted by vmf_insert_mixed() which will call either insert_pfn() or insert_page(). Neither insert_pfn() nor insert_page() increments the page reference count. Invalidations don't callback into the device driver so I don't see how page reference counts can be tracked without adding a mmu_interval_notifier. I think just leaving the page reference count at one is better...

...t4_map_blocks() ext4_set_iomap() dax_iomap_pfn() dax_insert_entry() vmf_insert_mixed(pfn) __vm_insert_mixed() if (!IS_ENABLED(CONFIG_ARCH_HAS_PTE_SPECIAL) && !pfn_t_devmap(pfn) && pfn_t_valid(pfn)) insert_page() get_page(page) // XXX would trigger VM_BUG_ON_PAGE() page_add_file_rmap() set_pte_at() else insert_pfn() pte_mkdevmap() set_pte_at() Should pmem set the page reference count to one before in...

...agebitmap +* "AuiNotebook#get_page_count":#AuiNotebook_getpagecount +* "AuiNotebook#get_page_index":#AuiNotebook_getpageindex +* "AuiNotebook#get_page_text":#AuiNotebook_getpagetext +* "AuiNotebook#get_selection":#AuiNotebook_getselection +* "AuiNotebook#insert_page":#AuiNotebook_insertpage +* "AuiNotebook#remove_page":#AuiNotebook_removepage +* "AuiNotebook#set_art_provider":#AuiNotebook_setartprovider +* "AuiNotebook#set_page_bitmap":#AuiNotebook_setpagebitmap +* "AuiNotebook#set_page_text":#AuiNotebook_setpagetex...

I''m sure everyone has seen the drop of VMI patches for Linux at this point, but just in case, the link is included below. I''ve read this version of the VMI spec and have made my way through most of the patches. While I wasn''t really that impressed with the first spec wrt Xen, the second version seems to be much more palatable. Specifically, the code inlining and

Following up to the discussion in: https://lore.kernel.org/r/20200914204209.256266093 at linutronix.de and the second version of this: https://lore.kernel.org/r/20201029221806.189523375 at linutronix.de this series provides a preemptible variant of kmap_atomic & related interfaces. This is achieved by: - Removing the RT dependency from migrate_disable/enable() - Consolidating all

Following up to the discussion in: https://lore.kernel.org/r/20200914204209.256266093 at linutronix.de and the second version of this: https://lore.kernel.org/r/20201029221806.189523375 at linutronix.de this series provides a preemptible variant of kmap_atomic & related interfaces. This is achieved by: - Removing the RT dependency from migrate_disable/enable() - Consolidating all

Following up to the discussion in: https://lore.kernel.org/r/20200914204209.256266093 at linutronix.de and the second version of this: https://lore.kernel.org/r/20201029221806.189523375 at linutronix.de this series provides a preemptible variant of kmap_atomic & related interfaces. This is achieved by: - Removing the RT dependency from migrate_disable/enable() - Consolidating all