)]}' { "log": [ { "commit": "9195481d2f869a2707a272057f3f8664fd277534", "tree": "995f43619af48009b616bf5a7ce4a6bffd75de79", "parents": [ "96177299416dbccb73b54e6b344260154a445375" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sat Feb 10 01:43:04 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:18 2007 -0800" }, "message": "[PATCH] Drop nr_free_pages_pgdat()\n\nFunction is unnecessary now. We can use the summing features of the ZVCs to\nget the values we need.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "96177299416dbccb73b54e6b344260154a445375", "tree": "586454851d0fbbb365d6b12c852d5a7dd6b004f4", "parents": [ "51ed4491271be8c56bdb2a03481ed34ea4984bc2" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sat Feb 10 01:43:03 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Sun Feb 11 10:51:18 2007 -0800" }, "message": "[PATCH] Drop free_pages()\n\nnr_free_pages is now a simple access to a global variable. Make it a macro\ninstead of a function.\n\nThe nr_free_pages now requires vmstat.h to be included. There is one\noccurrence in power management where we need to add the include. Directly\nrefrer to global_page_state() there to clarify why the #include was added.\n\n[akpm@osdl.org: arm build fix]\n[akpm@osdl.org: sparc64 build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7bf236874292fd073c6bdd27f89c3d9e81a79cbc", "tree": "27e4196e4b720c113010d544567f76f181c11428", "parents": [ "3223ea8cca5936b8e78450dd5b8ba88372e9c0a8" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Fri Jan 05 16:36:28 2007 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Fri Jan 05 23:55:22 2007 -0800" }, "message": "[PATCH] swsusp: Do not fail if resume device is not set\n\nIn the kernels later than 2.6.19 there is a regression that makes swsusp\nfail if the resume device is not explicitly specified.\n\nIt can be fixed by adding an additional parameter to\nmm/swapfile.c:swap_type_of() allowing us to pass the (struct block_device\n*) corresponding to the first available swap back to the caller.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3aef83e0ef1ffb8ea3bea97be46821a45c952173", "tree": "f73878eb2ecce804c9eea6fbb13603907b3674b4", "parents": [ "3fc6b34f4803b959c1e30c15247e2180cd529115" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed Dec 06 20:34:10 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:27 2006 -0800" }, "message": "[PATCH] swsusp: use block device offsets to identify swap locations\n\nMake swsusp use block device offsets instead of swap offsets to identify swap\nlocations and make it use the same code paths for writing as well as for\nreading data.\n\nThis allows us to use the same code for handling swap files and swap\npartitions and to simplify the code, eg. by dropping rw_swap_page_sync().\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "915bae9ebe41e52d71ad8b06d50e4ab26189f964", "tree": "daf0c9a370d3a551c1bb5beea69a3a0cfecd9885", "parents": [ "3592695c363c3f3119621bdcf5ed852d6b9d1a5c" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Wed Dec 06 20:34:07 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:27 2006 -0800" }, "message": "[PATCH] swsusp: use partition device and offset to identify swap areas\n\nThe Linux kernel handles swap files almost in the same way as it handles swap\npartitions and there are only two differences between these two types of swap\nareas:\n\n(1) swap files need not be contiguous,\n\n(2) the header of a swap file is not in the first block of the partition\n that holds it. From the swsusp\u0027s point of view (1) is not a problem,\n because it is already taken care of by the swap-handling code, but (2) has\n to be taken into consideration.\n\nIn principle the location of a swap file\u0027s header may be determined with the\nhelp of appropriate filesystem driver. Unfortunately, however, it requires\nthe filesystem holding the swap file to be mounted, and if this filesystem is\njournaled, it cannot be mounted during a resume from disk. For this reason we\nneed some other means by which swap areas can be identified.\n\nFor example, to identify a swap area we can use the partition that holds the\narea and the offset from the beginning of this partition at which the swap\nheader is located.\n\nThe following patch allows swsusp to identify swap areas this way. It changes\nswap_type_of() so that it takes an additional argument representing an offset\nof the swap header within the partition represented by its first argument.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7602bdf2fd14a40dd9b104e516fdc05e1bd17952", "tree": "5ca703b0a95f6f2e6d977c816532b9085f453974", "parents": [ "098fe651f7e9d759d1117c78c1a642b9b3945922" ], "author": { "name": "Ashwin Chaugule", "email": "ashwin.chaugule@celunite.com", "time": "Wed Dec 06 20:31:57 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.osdl.org", "time": "Thu Dec 07 08:39:21 2006 -0800" }, "message": "[PATCH] new scheme to preempt swap token\n\nThe new swap token patches replace the current token traversal algo. The old\nalgo had a crude timeout parameter that was used to handover the token from\none task to another. This algo, transfers the token to the tasks that are in\nneed of the token. The urgency for the token is based on the number of times\na task is required to swap-in pages. Accordingly, the priority of a task is\nincremented if it has been badly affected due to swap-outs. To ensure that\nthe token doesnt bounce around rapidly, the token holders are given a priority\nboost. The priority of tasks is also decremented, if their rate of swap-in\u0027s\nkeeps reducing. This way, the condition to check whether to pre-empt the swap\ntoken, is a matter of comparing two task\u0027s priority fields.\n\n[akpm@osdl.org: cleanups]\nSigned-off-by: Ashwin Chaugule \u003cashwin.chaugule@celunite.com\u003e\nCc: Rik van Riel \u003criel@redhat.com\u003e\nCc: Peter Zijlstra \u003ca.p.zijlstra@chello.nl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "546e0d271941dd1ff6961e2a1f7eac75f1fc277e", "tree": "60c74a9598f7cb4622c1b6acd25df5df67284353", "parents": [ "8c002494b55119a3fd1dddee83b4fb75cfda47e5" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Mon Sep 25 23:32:44 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:58 2006 -0700" }, "message": "[PATCH] swsusp: read speedup\n\nImplement async reads for swsusp resuming.\n\nCrufty old PIII testbox:\n\t15.7 MB/s -\u003e 20.3 MB/s\n\nSony Vaio:\n\t14.6 MB/s -\u003e 33.3 MB/s\n\nI didn\u0027t implement the post-resume bio_set_pages_dirty(). I don\u0027t really\nunderstand why resume needs to run set_page_dirty() against these pages.\n\nIt might be a worry that this code modifies PG_Uptodate, PG_Error and\nPG_Locked against the image pages. Can this possibly affect the resumed-into\nkernel? Hopefully not, if we\u0027re atomically restoring its mem_map?\n\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nCc: Jens Axboe \u003caxboe@suse.de\u003e\nCc: Laurent Riffard \u003claurent.riffard@free.fr\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "ab954160350c91c77ae03740ef90458c3ad5412c", "tree": "28f99d765c2c6d497a1f5543b1867875cd6102a5", "parents": [ "3a4f7577c9ef393ca80c783f02ffbc125de771c7" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Mon Sep 25 23:32:42 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:58 2006 -0700" }, "message": "[PATCH] swsusp: write speedup\n\nSwitch the swsusp writeout code from 4k-at-a-time to 4MB-at-a-time.\n\nCrufty old PIII testbox:\n\t12.9 MB/s -\u003e 20.9 MB/s\n\nSony Vaio:\n\t14.7 MB/s -\u003e 26.5 MB/s\n\nThe implementation is crude. A better one would use larger BIOs, but wouldn\u0027t\ngain any performance.\n\nThe memcpys will be mostly pipelined with the IO and basically come for free.\n\nThe ENOMEM path has not been tested. It should be.\n\nCc: Pavel Machek \u003cpavel@ucw.cz\u003e\nCc: \"Rafael J. Wysocki\" \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0ff38490c836dc379ff7ec45b10a15a662f4e5f6", "tree": "cb42d5d3cace3c8d12f0b304879039c503807981", "parents": [ "972d1a7b140569084439a81265a0f15b74e924e0" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:52 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:51 2006 -0700" }, "message": "[PATCH] zone_reclaim: dynamic slab reclaim\n\nCurrently one can enable slab reclaim by setting an explicit option in\n/proc/sys/vm/zone_reclaim_mode. Slab reclaim is then used as a final\noption if the freeing of unmapped file backed pages is not enough to free\nenough pages to allow a local allocation.\n\nHowever, that means that the slab can grow excessively and that most memory\nof a node may be used by slabs. We have had a case where a machine with\n46GB of memory was using 40-42GB for slab. Zone reclaim was effective in\ndealing with pagecache pages. However, slab reclaim was only done during\nglobal reclaim (which is a bit rare on NUMA systems).\n\nThis patch implements slab reclaim during zone reclaim. Zone reclaim\noccurs if there is a danger of an off node allocation. At that point we\n\n1. Shrink the per node page cache if the number of pagecache\n pages is more than min_unmapped_ratio percent of pages in a zone.\n\n2. Shrink the slab cache if the number of the nodes reclaimable slab pages\n (patch depends on earlier one that implements that counter)\n are more than min_slab_ratio (a new /proc/sys/vm tunable).\n\nThe shrinking of the slab cache is a bit problematic since it is not node\nspecific. So we simply calculate what point in the slab we want to reach\n(current per node slab use minus the number of pages that neeed to be\nallocated) and then repeately run the global reclaim until that is\nunsuccessful or we have reached the limit. I hope we will have zone based\nslab reclaim at some point which will make that easier.\n\nThe default for the min_slab_ratio is 5%\n\nAlso remove the slab option from /proc/sys/vm/zone_reclaim_mode.\n\n[akpm@osdl.org: cleanups]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8bc719d3cab8414938f9ea6e33b58d8810d18068", "tree": "1afd4ce7865466bf9578ca746c63c1d351f07cdc", "parents": [ "19655d3487001d7df0e10e9cbfc27c758b77c2b5" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Mon Sep 25 23:31:20 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:47 2006 -0700" }, "message": "[PATCH] out of memory notifier\n\nAdd a notifer chain to the out of memory killer. If one of the registered\ncallbacks could release some memory, do not kill the process but return and\nretry the allocation that forced the oom killer to run.\n\nThe purpose of the notifier is to add a safety net in the presence of\nmemory ballooners. If the resource manager inflated the balloon to a size\nwhere memory allocations can not be satisfied anymore, it is better to\ndeflate the balloon a bit instead of killing processes.\n\nThe implementation for the s390 ballooner is included.\n\n[akpm@osdl.org: cleanups]\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "c1f60a5a419cc60aff27daffb150f5a3a3a79ef4", "tree": "8ae176462d6f220cd744ae6c3454113eebda02a8", "parents": [ "182e8e237349e7b6354f45aee4780b6423fd6a50" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Sep 25 23:31:11 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Sep 26 08:48:46 2006 -0700" }, "message": "[PATCH] reduce MAX_NR_ZONES: move HIGHMEM counters into highmem.c/.h\n\nMove totalhigh_pages and nr_free_highpages() into highmem.c/.h\n\nMove the totalhigh_pages definition into highmem.c/.h. Move the\nnr_free_highpages function into highmem.c\n\n[yoichi_yuasa@tripeaks.co.jp: build fix]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Yoichi Yuasa \u003cyoichi_yuasa@tripeaks.co.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9614634fe6a138fd8ae044950700d2af8d203f97", "tree": "9b020c1d36d8625f4048c057058efb2e17c81973", "parents": [ "cb6358eb69d9854f65f2979c0ce9280eee041828" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Mon Jul 03 00:24:13 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Jul 03 15:26:59 2006 -0700" }, "message": "[PATCH] ZVC/zone_reclaim: Leave 1% of unmapped pagecache pages for file I/O\n\nIt turns out that it is advantageous to leave a small portion of unmapped file\nbacked pages if all of a zone\u0027s pages (or almost all pages) are allocated and\nso the page allocator has to go off-node.\n\nThis allows recently used file I/O buffers to stay on the node and\nreduces the times that zone reclaim is invoked if file I/O occurs\nwhen we run out of memory in a zone.\n\nThe problem is that zone reclaim runs too frequently when the page cache is\nused for file I/O (read write and therefore unmapped pages!) alone and we have\nalmost all pages of the zone allocated. Zone reclaim may remove 32 unmapped\npages. File I/O will use these pages for the next read/write requests and the\nunmapped pages increase. After the zone has filled up again zone reclaim will\nremove it again after only 32 pages. This cycle is too inefficient and there\nare potentially too many zone reclaim cycles.\n\nWith the 1% boundary we may still remove all unmapped pages for file I/O in\nzone reclaim pass. However. it will take a large number of read and writes\nto get back to 1% again where we trigger zone reclaim again.\n\nThe zone reclaim 2.6.16/17 does not show this behavior because we have a 30\nsecond timeout.\n\n[akpm@osdl.org: rename the /proc file and the variable]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "34aa1330f9b3c5783d269851d467326525207422", "tree": "a47db4fa53527ea937dee9e763267ab21865ce11", "parents": [ "f3dbd34460ff54962d3e3244b6bcb7f5295356e6" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 30 01:55:37 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 30 11:25:35 2006 -0700" }, "message": "[PATCH] zoned vm counters: zone_reclaim: remove /proc/sys/vm/zone_reclaim_interval\n\nThe zone_reclaim_interval was necessary because we were not able to determine\nhow many unmapped pages exist in a zone. Therefore we had to scan in\nintervals to figure out if any pages were unmapped.\n\nWith the zoned counters and NR_ANON_PAGES we now know the number of pagecache\npages and the number of mapped pages in a zone. So we can simply skip the\nreclaim if there is an insufficient number of unmapped pages. We use\nSWAP_CLUSTER_MAX as the boundary.\n\nDrop all support for /proc/sys/vm/zone_reclaim_interval.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3218ae14b1e3ee2ab81df30ed690c8e864d23316", "tree": "91933138cb7c32dad2246ed39baa8ea4e6f98cd8", "parents": [ "10ad400b49aca15ecf83b0fde7e35e4064b15c85" ], "author": { "name": "Yasunori Goto", "email": "y-goto@jp.fujitsu.com", "time": "Tue Jun 27 02:53:33 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jun 27 17:32:36 2006 -0700" }, "message": "[PATCH] pgdat allocation for new node add (export kswapd start func)\n\nWhen node is hot-added, kswapd for the node should start. This export kswapd\nstart function as kswapd_run() to use at add_memory().\n\n[akpm@osdl.org: daemonize() isn\u0027t needed when using the kthread API]\nSigned-off-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nCc: \"Brown, Len\" \u003clen.brown@intel.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "bd1e22b8e0a90f9a91e4c27db14ca15773659bf7", "tree": "8d32bdc39977af9dd3ba577b1fa34c0106b7f18e", "parents": [ "e0a42726794f71336ff4b26084d453dd597471ce" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Fri Jun 23 02:03:47 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:52 2006 -0700" }, "message": "[PATCH] initialise total_memory() earlier\n\nInitialise total_memory earlier in boot. Because if for some reason we run\npage reclaim early in boot, we don\u0027t want total_memory to be zero when we use\nit as a divisor.\n\nAnd rename total_memory to vm_total_pages to avoid naming clashes with\narchitectures.\n\nCc: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Martin Bligh \u003cmbligh@google.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "bd96b9eb7cfd6ab24ba244360a09980a720874d2", "tree": "9231d56e83f4ef43a6f664c2b416734318b92084", "parents": [ "30c253e6da655d73eb8bfe2adca9b8f4d82fb81e" ], "author": { "name": "Con Kolivas", "email": "kernel@kolivas.org", "time": "Fri Jun 23 02:03:42 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:51 2006 -0700" }, "message": "[PATCH] mm: fix swap unused warning\n\nIf CONFIG_SWAP is not defined we get:\n\nmm/vmscan.c: In function ‘remove_mapping’:\nmm/vmscan.c:387: warning: unused variable ‘swap’\n\nConvert defines in swap.h into blank inline functions to fix this warning\nand be consistent.\n\nSigned-off-by: Con Kolivas \u003ckernel@kolivas.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "04e62a29bf157ce1edd168f2b71b533c80d13628", "tree": "7f0d5a58eeef2c2e08da86dc7141a1ccd050a37d", "parents": [ "442c9137de8d769053e81d325709dca72f0b5e44" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 23 02:03:38 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:51 2006 -0700" }, "message": "[PATCH] More page migration: use migration entries for file pages\n\nThis implements the use of migration entries to preserve ptes of file backed\npages during migration. Processes can therefore be migrated back and forth\nwithout loosing their connection to pagecache pages.\n\nNote that we implement the migration entries only for linear mappings.\nNonlinear mappings still require the unmapping of the ptes for migration.\n\nAnd another writepage() ugliness shows up. writepage() can drop the page\nlock. Therefore we have to remove migration ptes before calling writepages()\nin order to avoid having migration entries point to unlocked pages.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "0697212a411c1dae03c27845f2de2f3adb32c331", "tree": "4bedcdb27522f4a42c422e0a8af155501f43a69c", "parents": [ "8351a6e4785218a2b03c142be92926baff95ba5c" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Fri Jun 23 02:03:35 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:50 2006 -0700" }, "message": "[PATCH] Swapless page migration: add R/W migration entries\n\nImplement read/write migration ptes\n\nWe take the upper two swapfiles for the two types of migration ptes and define\na series of macros in swapops.h.\n\nThe VM is modified to handle the migration entries. migration entries can\nonly be encountered when the page they are pointing to is locked. This limits\nthe number of places one has to fix. We also check in copy_pte_range and in\nmprotect_pte_range() for migration ptes.\n\nWe check for migration ptes in do_swap_cache and call a function that will\nthen wait on the page lock. This allows us to effectively stop all accesses\nto apge.\n\nMigration entries are created by try_to_unmap if called for migration and\nremoved by local functions in migrate.c\n\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\n\n Several times while testing swapless page migration (I\u0027ve no NUMA, just\n hacking it up to migrate recklessly while running load), I\u0027ve hit the\n BUG_ON(!PageLocked(p)) in migration_entry_to_page.\n\n This comes from an orphaned migration entry, unrelated to the current\n correctly locked migration, but hit by remove_anon_migration_ptes as it\n checks an address in each vma of the anon_vma list.\n\n Such an orphan may be left behind if an earlier migration raced with fork:\n copy_one_pte can duplicate a migration entry from parent to child, after\n remove_anon_migration_ptes has checked the child vma, but before it has\n removed it from the parent vma. (If the process were later to fault on this\n orphaned entry, it would hit the same BUG from migration_entry_wait.)\n\n This could be fixed by locking anon_vma in copy_one_pte, but we\u0027d rather\n not. There\u0027s no such problem with file pages, because vma_prio_tree_add\n adds child vma after parent vma, and the page table locking at each end is\n enough to serialize. Follow that example with anon_vma: add new vmas to the\n tail instead of the head.\n\n (There\u0027s no corresponding problem when inserting migration entries,\n because a missed pte will leave the page count and mapcount high, which is\n allowed for. And there\u0027s no corresponding problem when migrating via swap,\n because a leftover swap entry will be correctly faulted. But the swapless\n method has no refcounting of its entries.)\n\nFrom: Ingo Molnar \u003cmingo@elte.hu\u003e\n\n pte_unmap_unlock() takes the pte pointer as an argument.\n\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\n\n Several times while testing swapless page migration, gcc has tried to exec\n a pointer instead of a string: smells like COW mappings are not being\n properly write-protected on fork.\n\n The protection in copy_one_pte looks very convincing, until at last you\n realize that the second arg to make_migration_entry is a boolean \"write\",\n and SWP_MIGRATION_READ is 30.\n\n Anyway, it\u0027s better done like in change_pte_range, using\n is_write_migration_entry and make_migration_entry_read.\n\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\n\n Remove unnecessary obfuscation from sys_swapon\u0027s range check on swap type,\n which blew up causing memory corruption once swapless migration made\n MAX_SWAPFILES no longer 2 ^ MAX_SWAPFILES_SHIFT.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e8f03d02080b25f53cd6bba8dc3a297803f18c01", "tree": "64d2731203aa3e90273322620c3b964bba7abed9", "parents": [ "6937a25cff818d32d0f9ff58a518c9ab96760aeb" ], "author": { "name": "Andreas Dilger", "email": "adilger@shaw.ca", "time": "Fri Jun 23 02:03:14 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jun 23 07:42:47 2006 -0700" }, "message": "[PATCH] reserve space for swap label\n\nReserve space in the swap disk header for a LABEL and UUID to be specified.\n This has been possible with util-linux-2.12b (via e2fsprogs 1.36\nlibblkid), and is used by at least FC3 and later. The kernel doesn\u0027t\nreally care about this, but the space shouldn\u0027t accidentally be used by\nsomething else either.\n\nAlso make the on-disk structures be fixed-size types, instead of \"int\",\nthough I don\u0027t know of any architecture in use where an \"int\" isn\u0027t the\nsame size as a \"__u32\" (all current kernel arches have it as \"unsigned\nint\").\n\nSigned-off-by: Andreas Dilger \u003cadilger@shaw.ca\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "66643de455c27973ac31ad6de9f859d399916842", "tree": "7ebed7f051879007d4b11d6aaa9e65a1bcb0b08f", "parents": [ "2c23d62abb820e19c54012520f08a198c2233a85", "387e2b0439026aa738a9edca15a57e5c0bcb4dfc" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed May 24 09:22:21 2006 +0100" }, "committer": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed May 24 09:22:21 2006 +0100" }, "message": "Merge branch \u0027master\u0027 of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6\n\nConflicts:\n\n\tinclude/asm-powerpc/unistd.h\n\tinclude/asm-sparc/unistd.h\n\tinclude/asm-sparc64/unistd.h\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\n" }, { "commit": "e6333fd4ddf7a583480017f535b9ea53c116ab81", "tree": "df1aeae28ce51103a0c9eda8f7d40e463297b2ef", "parents": [ "41e5a6ac80c600e1f8bda0a4871f0b797e097d78" ], "author": { "name": "Hua Zhong", "email": "hzhong@gmail.com", "time": "Mon May 15 09:44:22 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon May 15 11:20:56 2006 -0700" }, "message": "[PATCH] fix can_share_swap_page() when !CONFIG_SWAP\n\ncan_share_swap_page() is used to check if the page has the last reference.\nThis avoids allocating a new page for COW if it\u0027s the last page.\n\nHowever, if CONFIG_SWAP is not set, can_share_swap_page() is defined as 0,\nthus always causes a copy for the last COW page. The below simple patch\nfixes it.\n\nSigned-off-by: Hua Zhong \u003chzhong@gmail.com\u003e\nCc: David Howells \u003cdhowells@redhat.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "62c4f0a2d5a188f73a94f2cb8ea0dba3e7cf0a7f", "tree": "e85ca2d0dd43f90dccf758338764c3caa55f333f", "parents": [ "089f26d5e31b7bf42a9a8fefec08b30cd27f4b0e" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Apr 26 12:56:16 2006 +0100" }, "committer": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Apr 26 12:56:16 2006 +0100" }, "message": "Don\u0027t include linux/config.h from anywhere else in include/\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\n" }, { "commit": "cb45b0e966cbe747b6189c15b108901cc7d6c97c", "tree": "0402d4809ec175e80b083f7a713ec32c0109baad", "parents": [ "e23ca00bf1b1c6c0f04702cb4d29e275ab8dc330" ], "author": { "name": "Hideo AOKI", "email": "haoki@redhat.com", "time": "Mon Apr 10 22:52:59 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Apr 11 06:18:32 2006 -0700" }, "message": "[PATCH] overcommit: add calculate_totalreserve_pages()\n\nThese patches are an enhancement of OVERCOMMIT_GUESS algorithm in\n__vm_enough_memory().\n\n- why the kernel needed patching\n\n When the kernel can\u0027t allocate anonymous pages in practice, currnet\n OVERCOMMIT_GUESS could return success. This implementation might be\n the cause of oom kill in memory pressure situation.\n\n If the Linux runs with page reservation features like\n /proc/sys/vm/lowmem_reserve_ratio and without swap region, I think\n the oom kill occurs easily.\n\n- the overall design approach in the patch\n\n When the OVERCOMMET_GUESS algorithm calculates number of free pages,\n the reserved free pages are regarded as non-free pages.\n\n This change helps to avoid the pitfall that the number of free pages\n become less than the number which the kernel tries to keep free.\n\n- testing results\n\n I tested the patches using my test kernel module.\n\n If the patches aren\u0027t applied to the kernel, __vm_enough_memory()\n returns success in the situation but autual page allocation is\n failed.\n\n On the other hand, if the patches are applied to the kernel, memory\n allocation failure is avoided since __vm_enough_memory() returns\n failure in the situation.\n\n I checked that on i386 SMP 16GB memory machine. I haven\u0027t tested on\n nommu environment currently.\n\nThis patch adds totalreserve_pages for __vm_enough_memory().\n\nCalculate_totalreserve_pages() checks maximum lowmem_reserve pages and\npages_high in each zone. Finally, the function stores the sum of each\nzone to totalreserve_pages.\n\nThe totalreserve_pages is calculated when the VM is initilized.\nAnd the variable is updated when /proc/sys/vm/lowmem_reserve_raito\nor /proc/sys/vm/min_free_kbytes are changed.\n\nSigned-off-by: Hideo Aoki \u003chaoki@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f577eb30afdc68233f25d4d82b04102129262365", "tree": "25d3c2fa8dfbf42fd0d4776a36166736fcc1446a", "parents": [ "2b322ce210aec74ae0d02938d3a01e29fe079469" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Thu Mar 23 02:59:59 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Mar 23 07:38:07 2006 -0800" }, "message": "[PATCH] swsusp: low level interface\n\nIntroduce the low level interface that can be used for handling the\nsnapshot of the system memory by the in-kernel swap-writing/reading code of\nswsusp and the userland interface code (to be introduced shortly).\n\nAlso change the way in which swsusp records the allocated swap pages and,\nconsequently, simplifies the in-kernel swap-writing/reading code (this is\nnecessary for the userland interface too). To this end, it introduces two\nhelper functions in mm/swapfile.c, so that the swsusp code does not refer\ndirectly to the swap internals.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "b20a35035f983f4ac7e29c4a68f30e43510007e0", "tree": "fdf090ddddbcc275349f62f71adc98649e2c683b", "parents": [ "442295c94bf650221af3ef20fc68fa3e93876818" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Mar 22 00:09:12 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:06 2006 -0800" }, "message": "[PATCH] page migration reorg\n\nCentralize the page migration functions in anticipation of additional\ntinkering. Creates a new file mm/migrate.c\n\n1. Extract buffer_migrate_page() from fs/buffer.c\n\n2. Extract central migration code from vmscan.c\n\n3. Extract some components from mempolicy.c\n\n4. Export pageout() and remove_from_swap() from vmscan.c\n\n5. Make it possible to configure NUMA systems without page migration\n and non-NUMA systems with page migration.\n\nI had to so some #ifdeffing in mempolicy.c that may need a cleanup.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "69e05944af39fc6c97b09380c8721e38433bd828", "tree": "165e594ed5cd34c3a2b2ec236f75ac5b192ade7a", "parents": [ "179e96395b1f01e95ebe1ff5ef306b810dbbd147" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Wed Mar 22 00:08:19 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Mar 22 07:54:00 2006 -0800" }, "message": "[PATCH] vmscan: use unsigned longs\n\nTurn basically everything in vmscan.c into `unsigned long\u0027. This is to avoid\nthe possibility that some piece of code in there might decide to operate upon\nmore than 4G (or even 2G) of pages in one hit.\n\nThis might be silly, but we\u0027ll need it one day.\n\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9b0f8b040acd8dfd23860754c0d09ff4f44e2cbc", "tree": "33c69908705c88b86f14d9e835b6dee6a9c3a31b", "parents": [ "9827b781f20828e5ceb911b879f268f78fe90815" ], "author": { "name": "Christoph Lameter", "email": "clameter@engr.sgi.com", "time": "Mon Feb 20 18:27:52 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Feb 20 20:00:09 2006 -0800" }, "message": "[PATCH] Terminate process that fails on a constrained allocation\n\nSome allocations are restricted to a limited set of nodes (due to memory\npolicies or cpuset constraints). If the page allocator is not able to find\nenough memory then that does not mean that overall system memory is low.\n\nIn particular going postal and more or less randomly shooting at processes\nis not likely going to help the situation but may just lead to suicide (the\nwhole system coming down).\n\nIt is better to signal to the process that no memory exists given the\nconstraints that the process (or the configuration of the process) has\nplaced on the allocation behavior. The process may be killed but then the\nsysadmin or developer can investigate the situation. The solution is\nsimilar to what we do when running out of hugepages.\n\nThis patch adds a check before we kill processes. At that point\nperformance considerations do not matter much so we just scan the zonelist\nand reconstruct a list of nodes. If the list of nodes does not contain all\nonline nodes then this is a constrained allocation and we should kill the\ncurrent process.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "e965f9630c651fa4249039fd4b80c9392d07a856", "tree": "1353dd536d0ee549c30e462086624c21788ee9d2", "parents": [ "7e2ab150d1b3b286a4c864c60a549b2601777b63" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Feb 01 03:05:41 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Feb 01 08:53:17 2006 -0800" }, "message": "[PATCH] Direct Migration V9: Avoid writeback / page_migrate() method\n\nMigrate a page with buffers without requiring writeback\n\nThis introduces a new address space operation migratepage() that may be used\nby a filesystem to implement its own version of page migration.\n\nA version is provided that migrates buffers attached to pages. Some\nfilesystems (ext2, ext3, xfs) are modified to utilize this feature.\n\nThe swapper address space operation are modified so that a regular\nmigrate_page() will occur for anonymous pages without writeback (migrate_pages\nforces every anonymous page to have a swap entry).\n\nSigned-off-by: Mike Kravetz \u003ckravetz@us.ibm.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a3351e525e4768c29aa5d22ef59b5b38e0361e53", "tree": "457ab54f402b471c5158e8b361d059e88ab8cd62", "parents": [ "a48d07afdf18212de22b959715b16793c5a6e57a" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Feb 01 03:05:39 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Feb 01 08:53:16 2006 -0800" }, "message": "[PATCH] Direct Migration V9: remove_from_swap() to remove swap ptes\n\nAdd remove_from_swap\n\nremove_from_swap() allows the restoration of the pte entries that existed\nbefore page migration occurred for anonymous pages by walking the reverse\nmaps. This reduces swap use and establishes regular pte\u0027s without the need\nfor page faults.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a48d07afdf18212de22b959715b16793c5a6e57a", "tree": "36d5963c29ceb5c2f6df53036cef5c0d30383dbf", "parents": [ "b16664e44c54525be89dc07ad15a13b4eeec5634" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Feb 01 03:05:38 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Feb 01 08:53:16 2006 -0800" }, "message": "[PATCH] Direct Migration V9: migrate_pages() extension\n\nAdd direct migration support with fall back to swap.\n\nDirect migration support on top of the swap based page migration facility.\n\nThis allows the direct migration of anonymous pages and the migration of file\nbacked pages by dropping the associated buffers (requires writeout).\n\nFall back to swap out if necessary.\n\nThe patch is based on lots of patches from the hotplug project but the code\nwas restructured, documented and simplified as much as possible.\n\nNote that an additional patch that defines the migrate_page() method for\nfilesystems is necessary in order to avoid writeback for anonymous and file\nbacked pages.\n\nSigned-off-by: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nSigned-off-by: Mike Kravetz \u003ckravetz@us.ibm.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "2a11ff06d7d12be5d1bbcf592fff649b45ac2388", "tree": "cef86d3f60b6ae5b3dab277a554a92a8e08d903b", "parents": [ "a92f71263af9d0ab77c260f709c0c079656221aa" ], "author": { "name": "Christoph Lameter", "email": "clameter@engr.sgi.com", "time": "Wed Feb 01 03:05:33 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Feb 01 08:53:16 2006 -0800" }, "message": "[PATCH] zone_reclaim: configurable off node allocation period.\n\nCurrently the zone_reclaim code has a fixed window of 30 seconds of off node\nallocations should a local zone have no unused pagecache pages left. Reclaim\nwill be attempted again after this timeout period to avoid repeated useless\nscans for memory. This is also useful to established sufficiently large off\nnode allocation chunks to relieve the local node.\n\nIt may be beneficial to adjust that time period for some special situations.\nFor example if memory use was exceeding node capacity one may want to give up\nfor longer periods of time. If memory spikes intermittendly then one may want\nto shorten the time period to reduce the number of off node allocations.\n\nThis patch allows just that....\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9eeff2395e3cfd05c9b2e6074ff943a34b0c5c21", "tree": "20160098ec6ed8738cfecfc5f81181ad22b44e60", "parents": [ "f1fd1067ece574ab56e4a70878b9a5a1ed4c3c42" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Wed Jan 18 17:42:31 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 18 19:20:17 2006 -0800" }, "message": "[PATCH] Zone reclaim: Reclaim logic\n\nSome bits for zone reclaim exists in 2.6.15 but they are not usable. This\npatch fixes them up, removes unused code and makes zone reclaim usable.\n\nZone reclaim allows the reclaiming of pages from a zone if the number of\nfree pages falls below the watermarks even if other zones still have enough\npages available. Zone reclaim is of particular importance for NUMA\nmachines. It can be more beneficial to reclaim a page than taking the\nperformance penalties that come with allocating a page on a remote zone.\n\nZone reclaim is enabled if the maximum distance to another node is higher\nthan RECLAIM_DISTANCE, which may be defined by an arch. By default\nRECLAIM_DISTANCE is 20. 20 is the distance to another node in the same\ncomponent (enclosure or motherboard) on IA64. The meaning of the NUMA\ndistance information seems to vary by arch.\n\nIf zone reclaim is not successful then no further reclaim attempts will\noccur for a certain time period (ZONE_RECLAIM_INTERVAL).\n\nThis patch was discussed before. See\n\nhttp://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d113519961504207\u0026w\u003d2\nhttp://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d113408418232531\u0026w\u003d2\nhttp://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d113389027420032\u0026w\u003d2\nhttp://marc.theaimsgroup.com/?l\u003dlinux-kernel\u0026m\u003d113380938612205\u0026w\u003d2\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "053837fce7aa79025ed57656855df09f80175527", "tree": "05d7615894131a368fc4943f641b11acdd2ae694", "parents": [ "e236a166b2bc437769a9b8b5d19186a3761bde48" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Jan 18 17:42:27 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Jan 18 19:20:17 2006 -0800" }, "message": "[PATCH] mm: migration page refcounting fix\n\nMigration code currently does not take a reference to target page\nproperly, so between unlocking the pte and trying to take a new\nreference to the page with isolate_lru_page, anything could happen to\nit.\n\nFix this by holding the pte lock until we get a chance to elevate the\nrefcount.\n\nOther small cleanups while we\u0027re here.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "852cf918dcf2ae46468b425e679fbcbf0ea8fdbb", "tree": "7605fd255442fc6301c9e96b8aa7a01bc2dcc0e2", "parents": [ "eed6565f70ce3fc958e5a3483c48fc4a8e111bdc" ], "author": { "name": "Christoph Lameter", "email": "clameter@engr.sgi.com", "time": "Sat Jan 14 13:20:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Jan 14 18:27:07 2006 -0800" }, "message": "[PATCH] Fix for CONFIG_NUMA without CONFIG_SWAP\n\nSome people apparently run CONFIG_NUMA without CONFIG_SWAP. The migration\ncode currently depends on swap. This patch provides a set of inline\nfallback functions so that the kernel properly compiles. However, calls to\nmigration functions will fail.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "d498471133ff1f9586a06820beaeebc575fe2814", "tree": "c7cde93441692e3b32d83dfbf85858ab2d85e481", "parents": [ "ee27497df36823f2793212cad0997c044eb0e1eb" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jan 08 01:00:55 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:42 2006 -0800" }, "message": "[PATCH] SwapMig: Extend parameters for migrate_pages()\n\nExtend the parameters of migrate_pages() to allow the caller control over the\nfate of successfully migrated or impossible to migrate pages.\n\nSwap migration and direct migration will have the same interface after this\npatch so that patches can be independently applied to the policy layer and the\ncore migration code.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1480a540c98525640174a7eadd712378fcd6fd63", "tree": "28f2cc0aa819ff0aed30dd85bb16177d4a73002b", "parents": [ "8419c3181086c86664e8246bc997afc2e4ffba4f" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jan 08 01:00:53 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:42 2006 -0800" }, "message": "[PATCH] SwapMig: add_to_swap() avoid atomic allocations\n\nAdd gfp_mask to add_to_swap\n\nadd_to_swap does allocations with GFP_ATOMIC in order not to interfere with\nswapping. During migration we may have use add_to_swap extensively which may\nlead to out of memory errors.\n\nThis patch makes add_to_swap take a parameter that specifies the gfp mask.\nThe page migration code can then make add_to_swap use GFP_KERNEL.\n\nSigned-off-by: Hirokazu Takahashi \u003ctaka@valinux.co.jp\u003e\nSigned-off-by: Dave Hansen \u003chaveblue@us.ibm.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "8419c3181086c86664e8246bc997afc2e4ffba4f", "tree": "25938e6f99bdaaffe8f6d357582eca56692b091c", "parents": [ "39743889aaf76725152f16aa90ca3c45f6d52da3" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jan 08 01:00:52 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:42 2006 -0800" }, "message": "[PATCH] SwapMig: CONFIG_MIGRATION fixes\n\nMove move_to_lru, putback_lru_pages and isolate_lru in section surrounded by\nCONFIG_MIGRATION saving some codesize for single processor kernels.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7cbe34cf86c673503b177ff47cfa2c7030dabb50", "tree": "9b39d7e8f11fed68242d1cb1f0c85dfcf96e3250", "parents": [ "49d2e9cc4544369635cd6f4ef6d5bb0f757079a7" ], "author": { "name": "Christoph Lameter", "email": "clameter@engr.sgi.com", "time": "Sun Jan 08 01:00:49 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:41 2006 -0800" }, "message": "[PATCH] Swap Migration V5: Add CONFIG_MIGRATION for page migration support\n\nInclude page migration if the system is NUMA or having a memory model that\nallows distinct areas of memory (SPARSEMEM, DISCONTIGMEM).\n\nAnd:\n- Only include lru_add_drain_per_cpu if building for an SMP system.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "49d2e9cc4544369635cd6f4ef6d5bb0f757079a7", "tree": "d8c76c5224b05b812f96424a18b1e9205d90feae", "parents": [ "930d915252edda7042c944ed3c30194a2f9fe163" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jan 08 01:00:48 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:41 2006 -0800" }, "message": "[PATCH] Swap Migration V5: migrate_pages() function\n\nThis adds the basic page migration function with a minimal implementation that\nonly allows the eviction of pages to swap space.\n\nPage eviction and migration may be useful to migrate pages, to suspend\nprograms or for remapping single pages (useful for faulty pages or pages with\nsoft ECC failures)\n\nThe process is as follows:\n\nThe function wanting to migrate pages must first build a list of pages to be\nmigrated or evicted and take them off the lru lists via isolate_lru_page().\nisolate_lru_page determines that a page is freeable based on the LRU bit set.\n\nThen the actual migration or swapout can happen by calling migrate_pages().\n\nmigrate_pages does its best to migrate or swapout the pages and does multiple\npasses over the list. Some pages may only be swappable if they are not dirty.\n migrate_pages may start writing out dirty pages in the initial passes over\nthe pages. However, migrate_pages may not be able to migrate or evict all\npages for a variety of reasons.\n\nThe remaining pages may be returned to the LRU lists using putback_lru_pages().\n\nChangelog V4-\u003eV5:\n- Use the lru caches to return pages to the LRU\n\nChangelog V3-\u003eV4:\n- Restructure code so that applying patches to support full migration does\n require minimal changes. Rename swapout_pages() to migrate_pages().\n\nChangelog V2-\u003eV3:\n- Extract common code from shrink_list() and swapout_pages()\n\nSigned-off-by: Mike Kravetz \u003ckravetz@us.ibm.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: \"Michael Kerrisk\" \u003cmtk-manpages@gmx.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "21eac81f252fe31c3cf64b805a1e8652192f3a3b", "tree": "255662bda67f54ffde484046fd9ab9b0900ab409", "parents": [ "15316ba81aee6775d6079fb46c66c801989e7d10" ], "author": { "name": "Christoph Lameter", "email": "clameter@sgi.com", "time": "Sun Jan 08 01:00:45 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Jan 08 20:12:41 2006 -0800" }, "message": "[PATCH] Swap Migration V5: LRU operations\n\nThis is the start of the `swap migration\u0027 patch series.\n\nSwap migration allows the moving of the physical location of pages between\nnodes in a numa system while the process is running. This means that the\nvirtual addresses that the process sees do not change. However, the system\nrearranges the physical location of those pages.\n\nThe main intent of page migration patches here is to reduce the latency of\nmemory access by moving pages near to the processor where the process\naccessing that memory is running.\n\nThe patchset allows a process to manually relocate the node on which its\npages are located through the MF_MOVE and MF_MOVE_ALL options while\nsetting a new memory policy.\n\nThe pages of process can also be relocated from another process using the\nsys_migrate_pages() function call. Requires CAP_SYS_ADMIN. The migrate_pages\nfunction call takes two sets of nodes and moves pages of a process that are\nlocated on the from nodes to the destination nodes.\n\nManual migration is very useful if for example the scheduler has relocated a\nprocess to a processor on a distant node. A batch scheduler or an\nadministrator can detect the situation and move the pages of the process\nnearer to the new processor.\n\nsys_migrate_pages() could be used on non-numa machines as well, to force all\nof a particualr process\u0027s pages out to swap, if someone thinks that\u0027s useful.\n\nLarger installations usually partition the system using cpusets into sections\nof nodes. Paul has equipped cpusets with the ability to move pages when a\ntask is moved to another cpuset. This allows automatic control over locality\nof a process. If a task is moved to a new cpuset then also all its pages are\nmoved with it so that the performance of the process does not sink\ndramatically (as is the case today).\n\nSwap migration works by simply evicting the page. The pages must be faulted\nback in. The pages are then typically reallocated by the system near the node\nwhere the process is executing.\n\nFor swap migration the destination of the move is controlled by the allocation\npolicy. Cpusets set the allocation policy before calling sys_migrate_pages()\nin order to move the pages as intended.\n\nNo allocation policy changes are performed for sys_migrate_pages(). This\nmeans that the pages may not faulted in to the specified nodes if no\nallocation policy was set by other means. The pages will just end up near the\nnode where the fault occurred.\n\nThere\u0027s another patch series in the pipeline which implements \"direct\nmigration\".\n\nThe direct migration patchset extends the migration functionality to avoid\ngoing through swap. The destination node of the relation is controllable\nduring the actual moving of pages. The crutch of using the allocation policy\nto relocate is not necessary and the pages are moved directly to the target.\nIts also faster since swap is not used.\n\nAnd sys_migrate_pages() can then move pages directly to the specified node.\nImplement functions to isolate pages from the LRU and put them back later.\n\nThis patch:\n\nAn earlier implementation was provided by Hirokazu Takahashi\n\u003ctaka@valinux.co.jp\u003e and IWAMOTO Toshihiro \u003ciwamoto@valinux.co.jp\u003e for the\nmemory hotplug project.\n\nFrom: Magnus\n\nThis breaks out isolate_lru_page() and putpack_lru_page(). Needed for swap\nmigration.\n\nSigned-off-by: Magnus Damm \u003cmagnus.damm@gmail.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "3a291a20bd6fcfafb2109031f0760a0d3e92ecd7", "tree": "6c034471da9b2aac77b9810af640bb7a515cb299", "parents": [ "ca0aec0f7a94bf9f07fefa8bfd23282d4e8ceb8a" ], "author": { "name": "Rafael J. Wysocki", "email": "rjw@sisk.pl", "time": "Fri Jan 06 00:16:37 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jan 06 08:33:43 2006 -0800" }, "message": "[PATCH] mm: add a new function (needed for swap suspend)\n\nThis adds the function get_swap_page_of_type() allowing us to specify an index\nin swap_info[] and select a swap_info_struct structure to be used for\nallocating a swap page.\n\nThis function (or another one of similar functionality) will be necessary for\nimplementing the image-writing part of swsusp in the user space.  It can also\nbe used for simplifying the current in-kernel implementation of the\nimage-writing part of swsusp.\n\nSigned-off-by: Rafael J. Wysocki \u003crjw@sisk.pl\u003e\nAcked-by: Pavel Machek \u003cpavel@ucw.cz\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "7756b9e4e321c3c83c7aa5b9532d3e7fd7ddeb4a", "tree": "fe59fcd970e97e3878a743a5b476420501f99f00", "parents": [ "bbfbb7cec9dd7266534b2b4b9c8be2fa425bbfc9" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Fri Jan 06 00:11:09 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Jan 06 08:33:26 2006 -0800" }, "message": "[PATCH] kill last zone_reclaim() bits\n\nRemove the last bits of Martin\u0027s ill-fated sys_set_zone_reclaim().\n\nCc: Martin Hicks \u003cmort@wildopensource.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "f7b7fd8f3ebbb2810d6893295aa984acd0fd30db", "tree": "01afc1edafc50a3c65ec8576c05c60da53d8d242", "parents": [ "a93a117eaa0bec426d4671a49bfa96a6fdcd2ac9" ], "author": { "name": "Rik van Riel", "email": "riel@redhat.com", "time": "Mon Nov 28 13:44:07 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 28 14:42:25 2005 -0800" }, "message": "[PATCH] temporarily disable swap token on memory pressure\n\nSome users (hi Zwane) have seen a problem when running a workload that\neats nearly all of physical memory - th system does an OOM kill, even\nwhen there is still a lot of swap free.\n\nThe problem appears to be a very big task that is holding the swap\ntoken, and the VM has a very hard time finding any other page in the\nsystem that is swappable.\n\nInstead of ignoring the swap token when sc-\u003epriority reaches 0, we could\nsimply take the swap token away from the memory hog and make sure we\ndon\u0027t give it back to the memory hog for a few seconds.\n\nThis patch resolves the problem Zwane ran into.\n\nSigned-off-by: Rik van Riel \u003criel@redhat.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6daa0e28627abf362138244a620a821a9027d816", "tree": "5ca9cbc421cc1adf228cdd30cd627bca8be6242c", "parents": [ "af4ca457eaf2d6682059c18463eb106e2ce58198" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Fri Oct 21 03:18:50 2005 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Oct 28 08:16:47 2005 -0700" }, "message": "[PATCH] gfp_t: mm/* (easy parts)\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "dd0fc66fb33cd610bc1a5db8a5e232d34879b4d7", "tree": "51f96a9db96293b352e358f66032e1f4ff79fafb", "parents": [ "3b0e77bd144203a507eb191f7117d2c5004ea1de" ], "author": { "name": "Al Viro", "email": "viro@ftp.linux.org.uk", "time": "Fri Oct 07 07:46:04 2005 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Oct 08 15:00:57 2005 -0700" }, "message": "[PATCH] gfp flags annotations - part 1\n\n - added typedef unsigned int __nocast gfp_t;\n\n - replaced __nocast uses for gfp flags with gfp_t - it gives exactly\n the same warnings as far as sparse is concerned, doesn\u0027t change\n generated code (from gcc point of view we replaced unsigned int with\n typedef) and documents what\u0027s going on far better.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "5d337b9194b1ce3b6fd5f3cb2799455ed2f9a3d1", "tree": "91ed9ef6f4cb5f6a1832f2baaaabd53fcd83513e", "parents": [ "048c27fd72816b44e096997d1c6901c3abbfd45b" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:41 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:42 2005 -0700" }, "message": "[PATCH] swap: swap_lock replace list+device\n\nThe idea of a swap_device_lock per device, and a swap_list_lock over them all,\nis appealing; but in practice almost every holder of swap_device_lock must\nalready hold swap_list_lock, which defeats the purpose of the split.\n\nThe only exceptions have been swap_duplicate, valid_swaphandles and an\nuntrodden path in try_to_unuse (plus a few places added in this series).\nvalid_swaphandles doesn\u0027t show up high in profiles, but swap_duplicate does\ndemand attention. However, with the hold time in get_swap_pages so much\nreduced, I\u0027ve not yet found a load and set of swap device priorities to show\neven swap_duplicate benefitting from the split. Certainly the split is mere\noverhead in the common case of a single swap device.\n\nSo, replace swap_list_lock and swap_device_lock by spinlock_t swap_lock\n(generally we seem to prefer an _ in the name, and not hide in a macro).\n\nIf someone can show a regression in swap_duplicate, then probably we should\nadd a hashlock for the swap_map entries alone (shorts being anatomic), so as\nto help the case of the single swap device too.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "52b7efdbe5f5696fc80338560a3fc51e0b0a993c", "tree": "30162de9fc8fe3dddb6462f8ff82f1594067cadd", "parents": [ "7dfad4183bf9cd92f977caa3c12cc74f0eefc0e6" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:39 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:41 2005 -0700" }, "message": "[PATCH] swap: scan_swap_map drop swap_device_lock\n\nget_swap_page has often shown up on latency traces, doing lengthy scans while\nholding two spinlocks. swap_list_lock is already dropped, now scan_swap_map\ndrop swap_device_lock before scanning the swap_map.\n\nWhile scanning for an empty cluster, don\u0027t worry that racing tasks may\nallocate what was free and free what was allocated; but when allocating an\nentry, check it\u0027s still free after retaking the lock. Avoid dropping the lock\nin the expected common path. No barriers beyond the locks, just let the\ncookie crumble; highest_bit limit is volatile, but benign.\n\nGuard against swapoff: must check SWP_WRITEOK before allocating, must raise\nSWP_SCANNING reference count while in scan_swap_map, swapoff wait for that to\nfall - just use schedule_timeout, we don\u0027t want to burden scan_swap_map\nitself, and it\u0027s very unlikely that anyone can really still be in\nscan_swap_map once swapoff gets this far.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "6eb396dc4a9781c5e7951143ab56ce5710687ab3", "tree": "48b165c8934a0f3852344725fee060740dcdfa48", "parents": [ "53092a7402f227151a681b0c92ec8598c5618b1a" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:35 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:41 2005 -0700" }, "message": "[PATCH] swap: swap unsigned int consistency\n\nThe swap header\u0027s unsigned int last_page determines the range of swap pages,\nbut swap_info has been using int or unsigned long in some cases: use unsigned\nint throughout (except, in several places a local unsigned long is useful to\navoid overflows when adding).\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Jens Axboe \u003caxboe@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "53092a7402f227151a681b0c92ec8598c5618b1a", "tree": "ea482a18567c8b3b1778331ee3c4864e2f4dae6f", "parents": [ "11d31886dbcb61039ed3789e583d21c6e70960fd" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:34 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:40 2005 -0700" }, "message": "[PATCH] swap: show span of swap extents\n\nThe \"Adding %dk swap\" message shows the number of swap extents, as a guide to\nhow fragmented the swapfile may be. But a useful further guide is what total\nextent they span across (sometimes scarily large).\n\nAnd there\u0027s no need to keep nr_extents in swap_info: it\u0027s unused after the\ninitial message, so save a little space by keeping it on stack.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "11d31886dbcb61039ed3789e583d21c6e70960fd", "tree": "ddaebfd35080a530a30c56587707c2c5ef452591", "parents": [ "4cd3bb10ff0b21b77b5a4cd13b4bd36694e054c4" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Sat Sep 03 15:54:34 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@evo.osdl.org", "time": "Mon Sep 05 00:05:40 2005 -0700" }, "message": "[PATCH] swap: swap extent list is ordered\n\nThere are several comments that swap\u0027s extent_list.prev points to the lowest\nextent: that\u0027s not so, it\u0027s extent_list.next which points to it, as you\u0027d\nexpect. And a couple of loops in add_swap_extent which go all the way through\nthe list, when they should just add to the other end.\n\nFix those up, and let map_swap_page search the list forwards: profiles shows\nit to be twice as quick that way - because prefetch works better on how the\nstructs are typically kmalloc\u0027ed? or because usually more is written to than\nread from swap, and swap is allocated ascendingly?\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "9ae5b3c703cce89a7d8ccf25fe16955ec6f016c0", "tree": "ae3b77d4b7bb287c6fb6b4baa321e2901bfae45b", "parents": [ "46bdac99382dd36e2d8c36cfb35d879b5c136965" ], "author": { "name": "Olaf Hering", "email": "olh@suse.de", "time": "Sun Aug 07 09:42:24 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sun Aug 07 10:00:38 2005 -0700" }, "message": "[PATCH] remove linux/pagemap.h from linux/swap.h\n\nsparc can not include linux/pagemap.h because of the following circular\ndependency:\n\nasm-sparc/pgtable include linux/swap.h\nlinux/swap.h include now linux/pagemap.h\nlinux/pagemap.h include linux/mm.h\nlinux/mm.h include asm/pgtable.h\n\nIt needs to have the swp_entry_t type fully visible in pgtable.h,\nwe can\u0027t work around this using macros.\n\nSigned-off-by: Olaf Hering \u003colh@suse.de\u003e\nCc: William Lee Irwin III \u003cwli@holomorphy.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "542d1c88bd7f73e2e59d41b12e4a9041deea89e4", "tree": "0968cf5c0695e74a0fa7357b6aa5083e10d9205d", "parents": [ "7da6844cf7bc44dcda548a0a0aebf85f3a1c1485" ], "author": { "name": "Andrew Morton", "email": "akpm@osdl.org", "time": "Tue Jul 12 13:58:31 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jul 12 16:01:02 2005 -0700" }, "message": "[PATCH] tlb.h warning fix\n\nfree_pages_and_swap_cache() and free_page_and_swap_cache() use release_pages()\nand page_cache_release() respectively, so make sure that we have the\ndeclarations in scope.\n\nCc: Olaf Hering \u003colh@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "79b9ce311e192e9a31fd9f3cf1ee4a4edf9e2650", "tree": "210896405b2b70aded7582750e20967df8c8e7bf", "parents": [ "cb2c0233755429037462e16ea0d5497a0092738c" ], "author": { "name": "Marcelo Tosatti", "email": "marcelo.tosatti@cyclades.com", "time": "Thu Jul 07 17:56:04 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Thu Jul 07 18:23:35 2005 -0700" }, "message": "[PATCH] print order information when OOM killing\n\nDump the current allocation order when OOM killing.\n\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1ad539b2bd89bf2e129123eb24d5bcc4484a35de", "tree": "e416e208cdbd5d9890d39e39384e4ec913c26ef6", "parents": [ "cbe37d093707762fc0abb280781e6a82a9d8d568" ], "author": { "name": "Darren Hart", "email": "dvhltc@us.ibm.com", "time": "Tue Jun 21 17:14:53 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:17 2005 -0700" }, "message": "[PATCH] vm: try_to_free_pages unused argument\n\ntry_to_free_pages accepts a third argument, order, but hasn\u0027t used it since\nbefore 2.6.0. The following patch removes the argument and updates all the\ncalls to try_to_free_pages.\n\nSigned-off-by: Darren Hart \u003cdvhltc@us.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "753ee728964e5afb80c17659cc6c3a6fd0a42fe0", "tree": "41c9a7700d0858c1f77c5bdaba97e5b636f69b06", "parents": [ "bfbb38fb808ac23ef44472d05d9bb36edfb49ed0" ], "author": { "name": "Martin Hicks", "email": "mort@sgi.com", "time": "Tue Jun 21 17:14:41 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:14 2005 -0700" }, "message": "[PATCH] VM: early zone reclaim\n\nThis is the core of the (much simplified) early reclaim. The goal of this\npatch is to reclaim some easily-freed pages from a zone before falling back\nonto another zone.\n\nOne of the major uses of this is NUMA machines. With the default allocator\nbehavior the allocator would look for memory in another zone, which might be\noff-node, before trying to reclaim from the current zone.\n\nThis adds a zone tuneable to enable early zone reclaim. It is selected on a\nper-zone basis and is turned on/off via syscall.\n\nAdding some extra throttling on the reclaim was also required (patch\n4/4). Without the machine would grind to a crawl when doing a \"make -j\"\nkernel build. Even with this patch the System Time is higher on\naverage, but it seems tolerable. Here are some numbers for kernbench\nruns on a 2-node, 4cpu, 8Gig RAM Altix in the \"make -j\" run:\n\n\t\t\twall user sys %cpu ctx sw. sleeps\n\t\t\t---- ---- --- ---- ------ ------\nNo patch\t\t1009 1384 847 258 298170 504402\nw/patch, no reclaim 880 1376 667 288 254064 396745\nw/patch \u0026 reclaim 1079 1385 926 252 291625 548873\n\nThese numbers are the average of 2 runs of 3 \"make -j\" runs done right\nafter system boot. Run-to-run variability for \"make -j\" is huge, so\nthese numbers aren\u0027t terribly useful except to seee that with reclaim\nthe benchmark still finishes in a reasonable amount of time.\n\nI also looked at the NUMA hit/miss stats for the \"make -j\" runs and the\nreclaim doesn\u0027t make any difference when the machine is thrashing away.\n\nDoing a \"make -j8\" on a single node that is filled with page cache pages\ntakes 700 seconds with reclaim turned on and 735 seconds without reclaim\n(due to remote memory accesses).\n\nThe simple zone_reclaim syscall program is at\nhttp://www.bork.org/~mort/sgi/zone_reclaim.c\n\nSigned-off-by: Martin Hicks \u003cmort@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d", "parents": [], "author": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n" } ] }