Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 17 Jan 2002 14:22:53 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 17 Jan 2002 14:22:44 -0500 Received: from garrincha.netbank.com.br ([200.203.199.88]:48398 "HELO netbank.com.br") by vger.kernel.org with SMTP id ; Thu, 17 Jan 2002 14:22:30 -0500 Date: Thu, 17 Jan 2002 17:22:10 -0200 (BRST) From: Rik van Riel X-X-Sender: To: Cc: Subject: [PATCH *] rmap VM 11c Message-ID: X-spambait: aardvark@kernelnewbies.org X-spammeplease: aardvark@nl.linux.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org For this release, IO tests are very much welcome ... The third maintenance release of the 11th version of the reverse mapping based VM is now available. This is an attempt at making a more robust and flexible VM subsystem, while cleaning up a lot of code at the same time. The patch is available from: http://surriel.com/patches/2.4/2.4.17-rmap-11c and http://linuxvm.bkbits.net/ My big TODO items for a next release are: - fix page_launder() so it doesn't submit the whole inactive_dirty list for writeout in one go ... no longer needed due to fixed elevator ??? - auto-tuning readahead, readahead per VMA rmap 11c: - oom_kill race locking fix (Andres Salomon) - elevator improvement (Andrew Morton) - dirty buffer writeout speedup (hopefully ;)) (me) - small documentation updates (me) - page_launder() never does synchronous IO, kswapd and the processes calling it sleep on higher level (me) - deadlock fix in touch_page() (me) rmap 11b: - added low latency reschedule points in vmscan.c (me) - make i810_dma.c include mm_inline.h too (William Lee Irwin) - wake up kswapd sleeper tasks on OOM kill so the killed task can continue on its way out (me) - tune page allocation sleep point a little (me) rmap 11a: - don't let refill_inactive() progress count for OOM (me) - after an OOM kill, wait 5 seconds for the next kill (me) - agpgart_be fix for hashed waitqueues (William Lee Irwin) rmap 11: - fix stupid logic inversion bug in wakeup_kswapd() (Andrew Morton) - fix it again in the morning (me) - add #ifdef BROKEN_PPC_PTE_ALLOC_ONE to rmap.h, it seems PPC calls pte_alloc() before mem_map[] init (me) - disable the debugging code in rmap.c ... the code is working and people are running benchmarks (me) - let the slab cache shrink functions return a value to help prevent early OOM killing (Ed Tomlinson) - also, don't call the OOM code if we have enough free pages (me) - move the call to lru_cache_del into __free_pages_ok (Ben LaHaise) - replace the per-page waitqueue with a hashed waitqueue, reduces size of struct page from 64 bytes to 52 bytes (48 bytes on non-highmem machines) (William Lee Irwin) rmap 10: - fix the livelock for real (yeah right), turned out to be a stupid bug in page_launder_zone() (me) - to make sure the VM subsystem doesn't monopolise the CPU, let kswapd and some apps sleep a bit under heavy stress situations (me) - let __GFP_HIGH allocations dig a little bit deeper into the free page pool, the SCSI layer seems fragile (me) rmap 9: - improve comments all over the place (Michael Cohen) - don't panic if page_remove_rmap() cannot find the rmap in question, it's possible that the memory was PG_reserved and belonging to a driver, but the driver exited and cleared the PG_reserved bit (me) - fix the VM livelock by replacing > by >= in a few critical places in the pageout code (me) - treat the reclaiming of an inactive_clean page like allocating a new page, calling try_to_free_pages() and/or fixup_freespace() if required (me) - when low on memory, don't make things worse by doing swapin_readahead (me) rmap 8: - add ANY_ZONE to the balancing functions to improve kswapd's balancing a bit (me) - regularize some of the maximum loop bounds in vmscan.c for cosmetic purposes (William Lee Irwin) - move page_address() to architecture-independent code, now the removal of page->virtual is portable (William Lee Irwin) - speed up free_area_init_core() by doing a single pass over the pages and not using atomic ops (William Lee Irwin) - documented the buddy allocator in page_alloc.c (William Lee Irwin) rmap 7: - clean up and document vmscan.c (me) - reduce size of page struct, part one (William Lee Irwin) - add rmap.h for other archs (untested, not for ARM) (me) rmap 6: - make the active and inactive_dirty list per zone, this is finally possible because we can free pages based on their physical address (William Lee Irwin) - cleaned up William's code a bit (me) - turn some defines into inlines and move those to mm_inline.h (the includes are a mess ...) (me) - improve the VM balancing a bit (me) - add back inactive_target to /proc/meminfo (me) rmap 5: - fixed recursive buglet, introduced by directly editing the patch for making rmap 4 ;))) (me) rmap 4: - look at the referenced bits in page tables (me) rmap 3: - forgot one FASTCALL definition (me) rmap 2: - teach try_to_unmap_one() about mremap() (me) - don't assign swap space to pages with buffers (me) - make the rmap.c functions FASTCALL / inline (me) rmap 1: - fix the swap leak in rmap 0 (Dave McCracken) rmap 0: - port of reverse mapping VM to 2.4.16 (me) Rik -- "Linux holds advantages over the single-vendor commercial OS" -- Microsoft's "Competing with Linux" document http://www.surriel.com/ http://distro.conectiva.com/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/