)]}' { "log": [ { "commit": "90b8f2824ce68dd87d304641a1d5a048dfff39f5", "tree": "b55ddcb619aac1e16d845dd6796c51721dd6ee56", "parents": [ "40cc51be699e37b78102ce7b2196ec9c32fe1908" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Mar 02 10:43:36 2008 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Oct 21 07:48:52 2008 -0400" }, "message": "[PATCH] end of methods switch: remove the old ones\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "d4430d62fa77208824a37fe6f85ab2831d274769", "tree": "5d4d0bca31e63eb208fbebe4f39c912b964c1e4d", "parents": [ "badf8082c33d18b118d3a6f1b32d5ea6b97d3839" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Mar 02 09:09:22 2008 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Oct 21 07:47:32 2008 -0400" }, "message": "[PATCH] beginning of methods conversion\n\nTo keep the size of changesets sane we split the switch by drivers;\nto keep the damn thing bisectable we do the following:\n\t1) rename the affected methods, add ones with correct\nprototypes, make (few) callers handle both. That\u0027s this changeset.\n\t2) for each driver convert to new methods. *ALL* drivers\nare converted in this series.\n\t3) kill the old (renamed) methods.\n\nNote that it _is_ a flagday; all in-tree drivers are converted and by the\nend of this series no trace of old methods remain. The only reason why\nwe do that this way is to keep the damn thing bisectable and allow per-driver\ndebugging if anything goes wrong.\n\nNew methods:\n\topen(bdev, mode)\n\trelease(disk, mode)\n\tioctl(bdev, mode, cmd, arg)\t\t/* Called without BKL */\n\tcompat_ioctl(bdev, mode, cmd, arg)\n\tlocked_ioctl(bdev, mode, cmd, arg)\t/* Called with BKL, legacy */\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "633a08b81206122469365b4c72eaeb71f04f2cb4", "tree": "9cd30507efd30645d30d351c7ad0d5966f806532", "parents": [ "a0eb62a0a4470fef5a5f41e7f1442fdd667220ef" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Wed Aug 29 20:34:12 2007 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Oct 21 07:47:26 2008 -0400" }, "message": "[PATCH] introduce __blkdev_driver_ioctl()\n\nAnalog of blkdev_driver_ioctl() with sane arguments. For\nnow uses fake struct file, by the end of the series it won\u0027t\nand blkdev_driver_ioctl() will become a wrapper around it.\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "08f85851215100d0eebf026810955ee6ad456c38", "tree": "bdc0034edc2e3c49fa832ef08d13de190374049a", "parents": [ "647b3d0084158c47b1aea8f34d13cab9cd0a5b49" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Oct 08 13:26:20 2007 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Oct 21 07:47:20 2008 -0400" }, "message": "[PATCH] move block_device_operations to blkdev.h\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "74f3c8aff36ad6552ea609c8b20bfd588fa16f38", "tree": "c046823751971ff37b66499282ca2b2e263cc71a", "parents": [ "e915e872ed921d707bc32b3f2184d43abfa8c9e2" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Mon Aug 27 15:38:10 2007 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Oct 21 07:47:14 2008 -0400" }, "message": "[PATCH] switch scsi_cmd_ioctl() to passing fmode_t\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "e915e872ed921d707bc32b3f2184d43abfa8c9e2", "tree": "698142e0a56622c3a3c0740522537dbff703732a", "parents": [ "5842e51ff2e8d660756248db80ad24e4f41977d9" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Sep 02 17:16:41 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Oct 21 07:47:12 2008 -0400" }, "message": "[PATCH] switch sg_scsi_ioctl() to passing fmode_t\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "aeb5d727062a0238a2f96c9c380fbd2be4640c6f", "tree": "51dae8a071fcf42e4431a66d37c5b843c8e99cf6", "parents": [ "2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Sep 02 15:28:45 2008 -0400" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Oct 21 07:47:06 2008 -0400" }, "message": "[PATCH] introduce fmode_t, do annotations\n\nSigned-off-by: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\n" }, { "commit": "c53dbf54863e7f3b0b8810dda2bdd0290006bdac", "tree": "f783074f1bec1112bf1148a077e0114a38403ad4", "parents": [ "b73b636e8987f8728c6c700377615757691b9a55", "f73e2d13a16cc88c4faa4729967f92bfeec8a142" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 17 09:29:55 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 17 09:29:55 2008 -0700" }, "message": "Merge branch \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-linus\u0027 of git://git.kernel.dk/linux-2.6-block:\n block: remove __generic_unplug_device() from exports\n block: move q-\u003eunplug_work initialization\n blktrace: pass zfcp driver data\n blktrace: add support for driver data\n block: fix current kernel-doc warnings\n block: only call -\u003erequest_fn when the queue is not stopped\n block: simplify string handling in elv_iosched_store()\n block: fix kernel-doc for blk_alloc_devt()\n block: fix nr_phys_segments miscalculation bug\n block: add partition attribute for partition number\n block: add BIG FAT WARNING to CONFIG_DEBUG_BLOCK_EXT_DEVT\n softirq: Add support for triggering softirq work on softirqs.\n" }, { "commit": "f73e2d13a16cc88c4faa4729967f92bfeec8a142", "tree": "6844c0e85b9b4ecdc8f2fc30ce8e7d2152d0c417", "parents": [ "713ada9ba94f2ad874cffd074b83e3dc681ca82f" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Oct 17 14:03:08 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Oct 17 14:03:08 2008 +0200" }, "message": "block: remove __generic_unplug_device() from exports\n\nThe only out-of-core user is IDE, and that should be using\nblk_start_queueing() instead.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "6000a368cd8e6da1caf101411bdb494cd6fb8b09", "tree": "4cd3333af00182e915aa96ffa49069f5f76976dc", "parents": [ "056a44834950ffa51fafa6c76a720fa32e86851a" ], "author": { "name": "Mike Christie", "email": "michaelc@cs.wisc.edu", "time": "Tue Aug 19 18:45:30 2008 -0500" }, "committer": { "name": "James Bottomley", "email": "James.Bottomley@HansenPartnership.com", "time": "Mon Oct 13 09:28:52 2008 -0400" }, "message": "[SCSI] block: separate failfast into multiple bits.\n\nMultipath is best at handling transport errors. If it gets a device\nerror then there is not much the multipath layer can do. It will just\naccess the same device but from a different path.\n\nThis patch breaks up failfast into device, transport and driver errors.\nThe multipath layers (md and dm mutlipath) only ask the lower levels to\nfast fail transport errors. The user of failfast, read ahead, will ask\nto fast fail on all errors.\n\nNote that blk_noretry_request will return true if any failfast bit\nis set. This allows drivers that do not support the multipath failfast\nbits to continue to fail on any failfast error like before. Drivers\nlike scsi that are able to fail fast specific errors can check\nfor the specific fail fast type. In the next patch I will convert\nscsi.\n\nSigned-off-by: Mike Christie \u003cmichaelc@cs.wisc.edu\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\n" }, { "commit": "b02739b01c5309d74a59859f2ce92c931d1f1955", "tree": "d435454dba5ebb10233069f9f4547df3a140ef28", "parents": [ "ad7fce93147d32ae53d25d9ea1a8ba31a239deee" ], "author": { "name": "Martin K. Petersen", "email": "martin.petersen@oracle.com", "time": "Thu Oct 02 18:47:49 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:22 2008 +0200" }, "message": "block: gendisk integrity wrapper\n\nThis is a wrapper for accessing a gendisk\u0027s integrity bits. It allows\nthe integrity support in MD to be compiled with BLK_DEV_INTEGRITY off.\n\nSigned-off-by: Martin K. Petersen \u003cmartin.petersen@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "ad7fce93147d32ae53d25d9ea1a8ba31a239deee", "tree": "baa8c613c1d34ec247f13b860c3bf7671b07f586", "parents": [ "0c032ab889e7b20b8a5a7d09313e4aca214a15f7" ], "author": { "name": "Martin K. Petersen", "email": "martin.petersen@oracle.com", "time": "Wed Oct 01 03:38:39 2008 -0400" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:21 2008 +0200" }, "message": "block: Switch blk_integrity_compare from bdev to gendisk\n\nThe DM and MD integrity support now depends on being able to use\ngendisks instead of block_devices when comparing integrity profiles.\nChange function parameters accordingly.\n\nAlso update comparison logic so that two NULL profiles are a valid\nconfiguration.\n\nSigned-off-by: Martin K. Petersen \u003cmartin.petersen@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "b04accc425d52ca59699290661e0dfd09b0feeeb", "tree": "2d30e03b384e9a6c990006c4c68176b56fd53fbe", "parents": [ "8deaf7210728c453295dc1cb2a5b66c68183ac85" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 02 12:53:22 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:21 2008 +0200" }, "message": "block: revert part of d7533ad0e132f92e75c1b2eb7c26387b25a583c1\n\nWe need bdev_get_integrity() to support the pending md/dm patches.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "d00e29fd99dd63d1c51917604e35dee824ed567f", "tree": "461c725d7ffaf2d5a69bc854ca4aa9977f530ea2", "parents": [ "99cd3386f290eaf61f2b7596d5a4cc2007771174" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Wed Oct 01 10:14:46 2008 -0400" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:21 2008 +0200" }, "message": "block: remove end_{queued|dequeued}_request()\n\nThis patch removes end_queued_request() and end_dequeued_request(),\nwhich are no longer used.\n\nAs a results, users of __end_request() became only end_request().\nSo the actual code in __end_request() is moved to end_request()\nand __end_request() is removed.\n\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "ef9e3facdf1fe1228721a7c295a76d1b7a0e57ec", "tree": "33847b1e267895ea58c2399c06cdd23365c7dc73", "parents": [ "336c3d8ce771608815b65bcfa27a17a83b297328" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Wed Oct 01 16:12:15 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:20 2008 +0200" }, "message": "block: add lld busy state exporting interface\n\nThis patch adds an new interface, blk_lld_busy(), to check lld\u0027s\nbusy state from the block layer.\nblk_lld_busy() calls down into low-level drivers for the checking\nif the drivers set q-\u003elld_busy_fn() using blk_queue_lld_busy().\n\nThis resolves a performance problem on request stacking devices below.\n\nSome drivers like scsi mid layer stop dispatching request when\nthey detect busy state on its low-level device like host/target/device.\nIt allows other requests to stay in the I/O scheduler\u0027s queue\nfor a chance of merging.\n\nRequest stacking drivers like request-based dm should follow\nthe same logic.\nHowever, there is no generic interface for the stacked device\nto check if the underlying device(s) are busy.\nIf the request stacking driver dispatches and submits requests to\nthe busy underlying device, the requests will stay in\nthe underlying device\u0027s queue without a chance of merging.\nThis causes performance problem on burst I/O load.\n\nWith this patch, busy state of the underlying device is exported\nvia q-\u003elld_busy_fn(). So the request stacking driver can check it\nand stop dispatching requests if busy.\n\nThe underlying device driver must return the busy state appropriately:\n 1: when the device driver can\u0027t process requests immediately.\n 0: when the device driver can process requests immediately,\n including abnormal situations where the device driver needs\n to kill all requests.\n\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nCc: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "a68bbddba486020c9c74825ce90c4c1ec463e0e8", "tree": "ce0acea1e609185968310316d3d1ac6f730db983", "parents": [ "9e49184c82e9ec3ab4d45f9ea5a17ccaf43869f0" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Sep 24 13:03:33 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:19 2008 +0200" }, "message": "block: add queue flag for SSD/non-rotational devices\n\nWe don\u0027t want to idle in AS/CFQ if the device doesn\u0027t have a seek\npenalty. So add a QUEUE_FLAG_NONROT to indicate a non-rotational\ndevice, low level drivers should set this flag upon discovery of\nan SSD or similar device type.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "4ee5eaf4516a60f8ef64d3c246c64c6be0cf8c3a", "tree": "3097d305534cd3a0fbfcca31ab5f4079b90e0fc3", "parents": [ "82124d60354846623a4b94af335717a5e142a074" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Thu Sep 18 10:46:13 2008 -0400" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:18 2008 +0200" }, "message": "block: add a queue flag for request stacking support\n\nThis patch adds a queue flag to indicate the block device can be\nused for request stacking.\n\nRequest stacking drivers need to stack their devices on top of\nonly devices of which q-\u003erequest_fn is functional.\nSince bio stacking drivers (e.g. md, loop) basically initialize\ntheir queue using blk_alloc_queue() and don\u0027t set q-\u003erequest_fn,\nthe check of (q-\u003erequest_fn \u003d\u003d NULL) looks enough for that purpose.\n\nHowever, dm will become both types of stacking driver (bio-based and\nrequest-based). And dm will always set q-\u003erequest_fn even if the dm\ndevice is bio-based of which q-\u003erequest_fn is not functional actually.\nSo we need something else to distinguish the type of the device.\nAdding a queue flag is a solution for that.\n\nThe reason why dm always sets q-\u003erequest_fn is to keep\nthe compatibility of dm user-space tools.\nCurrently, all dm user-space tools are using bio-based dm without\nspecifying the type of the dm device they use.\nTo use request-based dm without changing such tools, the kernel\nmust decide the type of the dm device automatically.\nThe automatic type decision can\u0027t be done at the device creation time\nand needs to be deferred until such tools load a mapping table,\nsince the actual type is decided by dm target type included in\nthe mapping table.\n\nSo a dm device has to be initialized using blk_init_queue()\nso that we can load either type of table.\nThen, all queue stuffs are set (e.g. q-\u003erequest_fn) and we have\nno element to distinguish that it is bio-based or request-based,\neven after a table is loaded and the type of the device is decided.\n\nBy the way, some stuffs of the queue (e.g. request_list, elevator)\nare needless when the dm device is used as bio-based.\nBut the memory size is not so large (about 20[KB] per queue on ia64),\nso I hope the memory loss can be acceptable for bio-based dm users.\n\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "82124d60354846623a4b94af335717a5e142a074", "tree": "af7b98d5ef57483cfac53cc4866194391c3ff7b7", "parents": [ "32fab448e5e86694beade415e750363538ea5f49" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Thu Sep 18 10:45:38 2008 -0400" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:18 2008 +0200" }, "message": "block: add request submission interface\n\nThis patch adds blk_insert_cloned_request(), a generic request\nsubmission interface for request stacking drivers.\nRequest-based dm will use it to submit their clones to underlying\ndevices.\n\nblk_rq_check_limits() is also added because it is possible that\nthe lower queue has stronger limitations than the upper queue\nif multiple drivers are stacking at request-level.\nNot only for blk_insert_cloned_request()\u0027s internal use, the function\nwill be used by request-based dm when the queue limitation is\nmodified (e.g. by replacing dm\u0027s table).\n\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "32fab448e5e86694beade415e750363538ea5f49", "tree": "6eab6189afba893c302fa6acca1a89406fd620c6", "parents": [ "e3335de94067dbebe22e3962632ead34e832cb60" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Thu Sep 18 10:45:09 2008 -0400" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:18 2008 +0200" }, "message": "block: add request update interface\n\nThis patch adds blk_update_request(), which updates struct request\nwith completing its data part, but doesn\u0027t complete the struct\nrequest itself.\nThough it looks like end_that_request_first() of older kernels,\nblk_update_request() should be used only by request stacking drivers.\n\nRequest-based dm will use it in bio-\u003ebi_end_io callback to update\nthe original request when a data part of a cloned request completes.\nFollowings are additional background information of why request-based\ndm needs this interface.\n\n - Request stacking drivers can\u0027t use blk_end_request() directly from\n the lower driver\u0027s completion context (bio-\u003ebi_end_io or rq-\u003eend_io),\n because some device drivers (e.g. ide) may try to complete\n their request with queue lock held, and it may cause deadlock.\n See below for detailed description of possible deadlock:\n \u003chttp://marc.info/?l\u003dlinux-kernel\u0026m\u003d120311479108569\u0026w\u003d2\u003e\n\n - To solve that, request-based dm offloads the completion of\n cloned struct request to softirq context (i.e. using\n blk_complete_request() from rq-\u003eend_io).\n\n - Though it is possible to use the same solution from bio-\u003ebi_end_io,\n it will delay the notification of bio completion to the original\n submitter. Also, it will cause inefficient partial completion,\n because the lower driver can\u0027t perform the cloned request anymore\n and request-based dm needs to requeue and redispatch it to\n the lower driver again later. That\u0027s not good.\n\n - So request-based dm needs blk_update_request() to perform the bio\n completion in the lower driver\u0027s completion context, which is more\n efficient.\n\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "9c02f2b02e29a2244e36c6e1f246080d8afc6cff", "tree": "d917ffa2e6ea5a75d180b72cc16e786da6a4b437", "parents": [ "7ba1fbaa4a478f72fbaf5a56af9c82a77966b4c7" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Sep 18 09:31:53 2008 -0700" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:17 2008 +0200" }, "message": "block: cleanup some of the integrity stuff in blkdev.h\n\nDon\u0027t put functions that are only used in fs/bio-integrity.c in\nblkdev.h, it\u0027s much cleaner to just keep it in there. Also kill\ncompletely unused bdev_get_tag_size()\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "581d4e28d9195aa8b2231383dbabc288988d615e", "tree": "093bcac9a538ef67edcf91826f7532bdb88e6248", "parents": [ "0a0d96b03a1f3bfd6bc3ea08008699e8e59fccd9" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Sun Sep 14 05:56:33 2008 -0700" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:17 2008 +0200" }, "message": "block: add fault injection mechanism for faking request timeouts\n\nOnly works for the generic request timer handling. Allows one to\nsporadically ignore request completions, thus exercising the timeout\nhandling.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "3e6053d76dcbd92b2f9f4ad5ece9bce83149523e", "tree": "0e7ab62872071c39e2475decb769b9715de75376", "parents": [ "4677735f03f5b6b6f2182f457a921855cadfb85b" ], "author": { "name": "Hugh Dickins", "email": "hugh@veritas.com", "time": "Thu Sep 11 10:57:55 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:17 2008 +0200" }, "message": "block: adjust blkdev_issue_discard for swap\n\nTwo mods to blkdev_issue_discard(), thinking ahead to its use on swap:\n\n1. Add gfp_mask argument, so swap allocation can use it where GFP_KERNEL\n might deadlock but GFP_NOIO is safe.\n\n2. Enlarge nr_sects argument from unsigned to sector_t: unsigned long is\n enough to cover a whole swap area, but sector_t suits any partition.\n\nChange sb_issue_discard()\u0027s nr_blocks to sector_t too; but no need seen\nfor a gfp_mask there, just pass GFP_KERNEL down to blkdev_issue_discard().\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "11914a53d2ec2974a565311af327b8983d8c820d", "tree": "72713d2661ed56fa5d9e29203541bad32c88a3ba", "parents": [ "242f9dcb8ba6f68fcd217a119a7648a4f69290e9" ], "author": { "name": "Mike Anderson", "email": "andmike@linux.vnet.ibm.com", "time": "Sat Sep 13 20:31:27 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:13 2008 +0200" }, "message": "block: Add interface to abort queued requests\n\nSigned-off-by: Mike Anderson \u003candmike@linux.vnet.ibm.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "242f9dcb8ba6f68fcd217a119a7648a4f69290e9", "tree": "1bfe245ffbc50d204d76665cd8f90d85100f86a1", "parents": [ "608aeef17a91747d6303de4df5e2c2e6899a95e8" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Sun Sep 14 05:55:09 2008 -0700" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:13 2008 +0200" }, "message": "block: unify request timeout handling\n\nRight now SCSI and others do their own command timeout handling.\nMove those bits to the block layer.\n\nInstead of having a timer per command, we try to be a bit more clever\nand simply have one per-queue. This avoids the overhead of having to\ntear down and setup a timer for each command, so it will result in a lot\nless timer fiddling.\n\nSigned-off-by: Mike Anderson \u003candmike@linux.vnet.ibm.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "879040742cf09f2360a9ac41846288707e4e567c", "tree": "7768750efd0d8ef28a183f8cd781b0c878212795", "parents": [ "4d8ab62e087d9300883b82c2662e73e6eef803a3" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Thu Aug 28 15:05:58 2008 +0900" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:11 2008 +0200" }, "message": "block: add blk_rq_aligned helper function\n\nThis adds blk_rq_aligned helper function to see if alignment and\npadding requirement is satisfied for DMA transfer. This also converts\nblk_rq_map_kern and __blk_rq_map_user to use the helper function.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "152e283fdfea0cd11e297d982378b55937842dde", "tree": "a97a57108353f167a1e2911e8ee09c527ef42d3e", "parents": [ "a3bce90edd8f6cafe3f63b1a943800792e830178" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Thu Aug 28 16:17:06 2008 +0900" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:10 2008 +0200" }, "message": "block: introduce struct rq_map_data to use reserved pages\n\nThis patch introduces struct rq_map_data to enable bio_copy_use_iov()\nuse reserved pages.\n\nCurrently, bio_copy_user_iov allocates bounce pages but\ndrivers/scsi/sg.c wants to allocate pages by itself and use\nthem. struct rq_map_data can be used to pass allocated pages to\nbio_copy_user_iov.\n\nThe current users of bio_copy_user_iov simply passes NULL (they don\u0027t\nwant to use pre-allocated pages).\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Douglas Gilbert \u003cdougg@torque.net\u003e\nCc: Mike Christie \u003cmichaelc@cs.wisc.edu\u003e\nCc: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "a3bce90edd8f6cafe3f63b1a943800792e830178", "tree": "c07a2962987e57997b4ff6f6c63febe1feaa0a9c", "parents": [ "45333d5a31296d0af886d94f1d08f128231cab8e" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Thu Aug 28 16:17:05 2008 +0900" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:10 2008 +0200" }, "message": "block: add gfp_mask argument to blk_rq_map_user and blk_rq_map_user_iov\n\nCurrently, blk_rq_map_user and blk_rq_map_user_iov always do\nGFP_KERNEL allocation.\n\nThis adds gfp_mask argument to blk_rq_map_user and blk_rq_map_user_iov\nso sg can use it (sg always does GFP_ATOMIC allocation).\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nSigned-off-by: Douglas Gilbert \u003cdougg@torque.net\u003e\nCc: Mike Christie \u003cmichaelc@cs.wisc.edu\u003e\nCc: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "ab780f1ece0dc8d5e8e8e85435acc5e4747ccda3", "tree": "4085b6c929a44de229eb5ef13fa2079211ea5512", "parents": [ "c7c22e4d5c1fdebfac4dba76de7d0338c2b0d832" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Aug 26 10:25:02 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:09 2008 +0200" }, "message": "block: inherit CPU completion on bio-\u003erq and rq-\u003erq merges\n\nSomewhat incomplete, as we do allow merges of requests and bios\nthat have different completion CPUs given. This is done on the\nassumption that a larger IO is still more beneficial than CPU\nlocality.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "c7c22e4d5c1fdebfac4dba76de7d0338c2b0d832", "tree": "ecc3d2517b3471ccc35d4cb4e3b48d4b57205061", "parents": [ "18887ad910e56066233a07fd3cfb2fa11338b782" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Sat Sep 13 20:26:01 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:09 2008 +0200" }, "message": "block: add support for IO CPU affinity\n\nThis patch adds support for controlling the IO completion CPU of\neither all requests on a queue, or on a per-request basis. We export\na sysfs variable (rq_affinity) which, if set, migrates completions\nof requests to the CPU that originally submitted it. A bio helper\n(bio_set_completion_cpu()) is also added, so that queuers can ask\nfor completion on that specific CPU.\n\nIn testing, this has been show to cut the system time by as much\nas 20-40% on synthetic workloads where CPU affinity is desired.\n\nThis requires a little help from the architecture, so it\u0027ll only\nwork as designed for archs that are using the new generic smp\nhelper infrastructure.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "18887ad910e56066233a07fd3cfb2fa11338b782", "tree": "a8d14ba47f15c58e36b26c82fa4ae4ad7526c80a", "parents": [ "b646fc59b332ef307895558c9cd1359dc2d25813" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jul 28 13:08:45 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:09 2008 +0200" }, "message": "block: make kblockd_schedule_work() take the queue as parameter\n\nPreparatory patch for checking queuing affinity.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "5df97b91b5d7ed426034fcc84cb6e7cf682b8838", "tree": "727b9fb778f72d2b1ff44c007fb5209bacf67f4a", "parents": [ "b8b3e16cfe6435d961f6aaebcfd52a1ff2a988c5" ], "author": { "name": "Mikulas Patocka", "email": "mpatocka@redhat.com", "time": "Fri Aug 15 10:20:02 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:03 2008 +0200" }, "message": "drop vmerge accounting\n\nRemove hw_segments field from struct bio and struct request. Without virtual\nmerge accounting they have no purpose.\n\nSigned-off-by: Mikulas Patocka \u003cmpatocka@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "766ca4428d1239a970926856c447310c9c191af2", "tree": "ddf5f709a4a0c67aabd4af5166f8735d5228d671", "parents": [ "1a8e2bddd5c29008f311613e75925fecbf522c5b" ], "author": { "name": "Fernando Luis Vázquez Cao", "email": "fernando@oss.ntt.co.jp", "time": "Thu Aug 14 09:59:13 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:02 2008 +0200" }, "message": "virtio_blk: use a wrapper function to access io context information of IO requests\n\nstruct request has an ioprio member but it is never updated because\ncurrently bios do not hold io context information. The implication of\nthis is that virtio_blk ends up passing useless information to the\nbackend driver.\n\nThat said, some IO schedulers such as CFQ do store io context\ninformation in struct request, but use private members for that, which\nmeans that that information cannot be directly accessed in a IO\nscheduler-independent way.\n\nThis patch adds a function to obtain the ioprio of a request. We should\navoid accessing ioprio directly and use this function instead, so that\nits users do not have to care about future changes in block layer\nstructures or what the currently active IO controller is.\n\nThis patch does not introduce any functional changes but paves the way\nfor future clean-ups and enhancements.\n\nSigned-off-by: Fernando Luis Vazquez Cao \u003cfernando@oss.ntt.co.jp\u003e\nAcked-by: Rusty Russell \u003crusty@rustcorp.com.au\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "1a8e2bddd5c29008f311613e75925fecbf522c5b", "tree": "e12f30d3efd7c8f89ba89e8b21a4df17f1488c3e", "parents": [ "e17fc0a1ccf88f6d4dcb363729f3141b0958c325" ], "author": { "name": "David Woodhouse", "email": "David.Woodhouse@intel.com", "time": "Wed Aug 13 12:35:09 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:02 2008 +0200" }, "message": "Kill REQ_TYPE_FLUSH\n\nIt was only used by ps3disk, and it should probably have been\nREQ_TYPE_LINUX_BLOCK + REQ_LB_OP_FLUSH.\n\nSigned-off-by: David Woodhouse \u003cDavid.Woodhouse@intel.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "e17fc0a1ccf88f6d4dcb363729f3141b0958c325", "tree": "0a7c2dc1c3159c2af14d87c67ca83e158b2c78b5", "parents": [ "d30a2605be9d5132d95944916e8f578fcfe4f976" ], "author": { "name": "David Woodhouse", "email": "David.Woodhouse@intel.com", "time": "Sat Aug 09 16:42:20 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:02 2008 +0200" }, "message": "Allow elevators to sort/merge discard requests\n\nBut blkdev_issue_discard() still emits requests which are interpreted as\nsoft barriers, because naïve callers might otherwise issue subsequent\nwrites to those same sectors, which might cross on the queue (if they\u0027re\nreallocated quickly enough).\n\nCallers still _can_ issue non-barrier discard requests, but they have to\ntake care of queue ordering for themselves.\n\nSigned-off-by: David Woodhouse \u003cDavid.Woodhouse@intel.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "eae9acd13a8d14b50c00a961fa959606f34bbd92", "tree": "cbd16bf7fe9db99f6916408953c6243aca175121", "parents": [ "8c540a96c175bdf55bda8707db04cec78b816454" ], "author": { "name": "David Woodhouse", "email": "David.Woodhouse@intel.com", "time": "Tue Aug 05 18:08:25 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:01 2008 +0200" }, "message": "Support \u0027discard sectors\u0027 operation in translation layer support core\n\nSigned-off-by: David Woodhouse \u003cDavid.Woodhouse@intel.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "fb2dce862d9f9a68e6b9374579056ec9eca02a63", "tree": "888e0fd7248c9329fa1aa3981043a2dc2457d488", "parents": [ "d628eaef310533767ce68664873869c2d7f78f09" ], "author": { "name": "David Woodhouse", "email": "David.Woodhouse@intel.com", "time": "Tue Aug 05 18:01:53 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:01 2008 +0200" }, "message": "Add \u0027discard\u0027 request handling\n\nSome block devices benefit from a hint that they can forget the contents\nof certain sectors. Add basic support for this to the block core, along\nwith a \u0027blkdev_issue_discard()\u0027 helper function which issues such\nrequests.\n\nThe caller doesn\u0027t get to provide an end_io functio, since\nblkdev_issue_discard() will automatically split the request up into\nmultiple bios if appropriate. Neither does the function wait for\ncompletion -- it\u0027s expected that callers won\u0027t care about when, or even\n_if_, the request completes. It\u0027s only a hint to the device anyway. By\ndefinition, the file system doesn\u0027t _care_ about these sectors any more.\n\n[With feedback from OGAWA Hirofumi \u003chirofumi@mail.parknet.co.jp\u003e and\nJens Axboe \u003cjens.axboe@oracle.com]\n\nSigned-off-by: David Woodhouse \u003cDavid.Woodhouse@intel.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "d628eaef310533767ce68664873869c2d7f78f09", "tree": "12d6a9e6db000d89deb7ab01d55d2e7b9e6f42c5", "parents": [ "36144077bce9f89763ce994bc631cbd1c9db7785" ], "author": { "name": "David Woodhouse", "email": "David.Woodhouse@intel.com", "time": "Sat Aug 09 16:22:17 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 09 08:56:01 2008 +0200" }, "message": "Fix up comments about matching flags between bio and rq\n\nSigned-off-by: David Woodhouse \u003cDavid.Woodhouse@intel.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "2dc75d3c3b49c64fd26b4832a7efb75546cb3fc5", "tree": "908ae81851ca06d46a680d8e6c33afdfb292c131", "parents": [ "adee14b2e1557d0a8559f29681732d05a89dfc35" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Sep 11 14:20:23 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Sep 11 14:20:23 2008 +0200" }, "message": "block: disable sysfs parts of the disk command filter\n\nWe still have life time issues with the sysfs command filter kobject,\nso disable it for 2.6.27 release. We can revisit this and make it work\nproperly for 2.6.28, for 2.6.27 release it\u0027s too risky.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "5168c47b4c294412f079dd3cc891e0276bb0479e", "tree": "5ab223a104b631f0ff2f86d3bd0d67066289ba36", "parents": [ "0e3eb45e4fe901d92bf9eae103155a57517af32e" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Aug 26 09:03:17 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Aug 27 09:50:20 2008 +0200" }, "message": "block: remove blk_queue_tag_depth() and blk_queue_tag_queue()\n\nThey are unused and -\u003ebusy doesn\u0027t exist anymore.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "4beab5c623fef4622f9a8593f85760ff10b5a3f7", "tree": "630ad8965703e3ea8296945f4db10c80a348d2b4", "parents": [ "14e507b852e7dcea142b98757181bfa785cb4c05" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Sat Jul 26 18:03:25 2008 +0900" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Aug 27 09:50:19 2008 +0200" }, "message": "block: rename blk_scsi_cmd_filter to blk_cmd_filter\n\nTechnically, the cmd_filter would be applied to other protocols though\nit\u0027s unlikely to happen. Putting SCSI stuff to request_queue is kinda\nlayer violation. So let\u0027s rename it.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "abf5439370491dd6fbb4fe1a7939680d2a9bc9d4", "tree": "aa3630557fe4a4bc6313617f5770af30eec68515", "parents": [ "1941246dd98089dd637f44d3bd4f6cc1c61aa9e4" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Sat Aug 16 14:10:05 2008 +0900" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Aug 27 09:50:19 2008 +0200" }, "message": "block: move cmdfilter from gendisk to request_queue\n\ncmd_filter works only for the block layer SG_IO with SCSI block\ndevices. It breaks scsi/sg.c, bsg, and the block layer SG_IO with SCSI\ncharacter devices (such as st). We hit a kernel crash with them.\n\nThe problem is that cmd_filter code accesses to gendisk (having struct\nblk_scsi_cmd_filter) via inode-\u003ei_bdev-\u003ebd_disk. It works for only\nSCSI block device files. With character device files, inode-\u003ei_bdev\nleads you to struct cdev. inode-\u003ei_bdev-\u003ebd_disk-\u003eblk_scsi_cmd_filter\nisn\u0027t safe.\n\nSCSI ULDs don\u0027t expose gendisk; they keep it private. bsg needs to be\nindependent on any protocols. We shouldn\u0027t change ULDs to expose their\ngendisk.\n\nThis patch moves struct blk_scsi_cmd_filter from gendisk to\nrequest_queue, a common object, which eveyone can access to.\n\nThe user interface doesn\u0027t change; users can change the filters via\n/sys/block/. gendisk has a pointer to request_queue so the cmd_filter\ncode accesses to struct blk_scsi_cmd_filter.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "6c5e0c4d518a37e1d5d794c14433e80284415079", "tree": "26208a4fe4115a37c000a13d50df8c1a5e393553", "parents": [ "94ad374a0751f40d25e22e036c37f7263569d24c" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Aug 01 20:31:32 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Aug 01 20:31:32 2008 +0200" }, "message": "block: add a blk_plug_device_unlocked() that grabs the queue lock\n\nblk_plug_device() must be called with the queue lock held, so callers\noften just grab and release the lock for that purpose. Add a helper\nthat does just that.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "d442cc44c0db56e84ef6aa244a88427d2efe06cd", "tree": "4358ff09af75c2e102f75eb08a9b55b446db6a07", "parents": [ "8df1b049bc86495a40e421abc8b9cf1dda32f0d9" ], "author": { "name": "Martin K. Petersen", "email": "martin.petersen@oracle.com", "time": "Wed Jul 16 16:09:06 2008 -0400" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Jul 16 14:51:41 2008 -0700" }, "message": "block: Trivial fix for blk_integrity_rq()\n\nFail integrity check gracefully when request does not have a bio\nattached (BLOCK_PC).\n\nSigned-off-by: Martin K. Petersen \u003cmartin.petersen@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "98339cbd360b77c3167db287fd611468c2c44559", "tree": "06779e040c18aa40fc5a6e15b132fa1f70ec45f6", "parents": [ "e4e0fadcd929138aa82130a1c5f22206d86d7bb2", "cbbc4e818de4451cdef75a112b7fc8a523d5d2a0" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jul 15 11:15:36 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jul 15 11:15:36 2008 -0700" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (80 commits)\n ide-floppy: fix unfortunate function naming\n ide-tape: unify idetape_create_read/write_cmd\n ide: add ide_pc_intr() helper\n ide-{floppy,scsi}: read Status Register before stopping DMA engine\n ide-scsi: add more debugging to idescsi_pc_intr()\n ide-scsi: use pc-\u003ecallback\n ide-floppy: add more debugging to idefloppy_pc_intr()\n ide-tape: always log debug info in idetape_pc_intr() if debugging is enabled\n ide-tape: add ide_tape_io_buffers() helper\n ide-tape: factor out DSC handling from idetape_pc_intr()\n ide-{floppy,tape}: move checking of -\u003efailed_pc to -\u003ecallback\n ide: add ide_issue_pc() helper\n ide: add PC_FLAG_DRQ_INTERRUPT pc flag\n ide-scsi: move idescsi_map_sg() call out from idescsi_issue_pc()\n ide: add ide_transfer_pc() helper\n ide-scsi: set drive-\u003escsi flag for devices handled by the driver\n ide-{cd,floppy,tape}: remove checking for drive-\u003escsi\n ide: add PC_FLAG_ZIP_DRIVE pc flag\n ide-tape: factor out waiting for good ireason from idetape_transfer_pc()\n ide-tape: set PC_FLAG_DMA_IN_PROGRESS flag in idetape_transfer_pc()\n ...\n" }, { "commit": "681a561b7ec7fdcd8f35b68e44ac6d6c70aecc04", "tree": "0bd31a85ccdbbae87f452448bd001e7a4c2b75da", "parents": [ "52a93ba815737e3877f85b46850cffe993a22429" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Tue Jul 15 21:21:45 2008 +0200" }, "committer": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Tue Jul 15 21:21:45 2008 +0200" }, "message": "block: unexport blk_end_sync_rq\n\nAll the users of blk_end_sync_rq has gone (they are converted to use\nblk_execute_rq). This unexports blk_end_sync_rq.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Borislav Petkov \u003cpetkovbb@gmail.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\n" }, { "commit": "27f8221af406e43b529a5425bc99c9b1e9bdf521", "tree": "6e847b9359327449b77d4b6350cc9d44fd9208b6", "parents": [ "2610324fcacf38a24b630090ebcb802538763187" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Fri Jul 04 09:30:03 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Jul 04 09:52:13 2008 +0200" }, "message": "block: add blk_queue_update_dma_pad\n\nThis adds blk_queue_update_dma_pad to prevent LLDs from overwriting\nthe dma pad mask wrongly (we added blk_queue_update_dma_alignment due\nto the same reason).\n\nThis also converts libata to use blk_queue_update_dma_pad instead of\nblk_queue_dma_pad.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Tejun Heo \u003chtejun@gmail.com\u003e\nCc: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\nCc: Thomas Bogendoerfer \u003ctsbogend@alpha.franken.de\u003e\nCc: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "e48ec69005f02b70b7ecfde1bc39a599086d16ef", "tree": "1868fc162e00af21332a82cdf348229c6b985d2f", "parents": [ "e180f5949327e897bc35a816f4f4010186632df9" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jul 03 13:18:54 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jul 03 13:21:15 2008 +0200" }, "message": "block: extend queue_flag bitops\n\nAdd test_and_clear and test_and_set.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "cc371e66e340f35eed8dc4651c7c18e754c7fb26", "tree": "5a2d6727eb07a05999c531a90da43ab1c36b713e", "parents": [ "b24498d477a14680fc3bb3ad884fa9fa76a2d237" ], "author": { "name": "Alasdair G Kergon", "email": "agk@redhat.com", "time": "Thu Jul 03 09:53:43 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jul 03 13:21:15 2008 +0200" }, "message": "Add bvec_merge_data to handle stacked devices and -\u003emerge_bvec()\n\nWhen devices are stacked, one device\u0027s merge_bvec_fn may need to perform\nthe mapping and then call one or more functions for its underlying devices.\n\nThe following bio fields are used:\n bio-\u003ebi_sector\n bio-\u003ebi_bdev\n bio-\u003ebi_size\n bio-\u003ebi_rw using bio_data_dir()\n\nThis patch creates a new struct bvec_merge_data holding a copy of those\nfields to avoid having to change them directly in the struct bio when\ngoing down the stack only to have to change them back again on the way\nback up. (And then when the bio gets mapped for real, the whole\nexercise gets repeated, but that\u0027s a problem for another day...)\n\nSigned-off-by: Alasdair G Kergon \u003cagk@redhat.com\u003e\nCc: Neil Brown \u003cneilb@suse.de\u003e\nCc: Milan Broz \u003cmbroz@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "b24498d477a14680fc3bb3ad884fa9fa76a2d237", "tree": "1ba2c9f24b3f22f45fa424ad904fb6dcc5d67790", "parents": [ "06a452e5b95eb669b7ad414ccf587dfc2d91b217" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Jun 27 09:12:09 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jul 03 13:21:15 2008 +0200" }, "message": "block: integrity flags can\u0027t use bit ops on unsigned short\n\nJust use normal open coded bit operations instead, they need not be\natomic.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "0b07de85a76e1346e675f0e98437378932473df7", "tree": "b86e5e0be27679c408ab525534c76162754129b9", "parents": [ "6e2401ad6f33de15ff00f78b88159f00a14f3b35" ], "author": { "name": "Adel Gadllah", "email": "adel.gadllah@gmail.com", "time": "Thu Jun 26 13:48:27 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jul 03 13:21:14 2008 +0200" }, "message": "allow userspace to modify scsi command filter on per device basis\n\nThis patch exports the per-gendisk command filter to user space through\nsysfs, so it can be changed by the system administrator.\nAll users of the old cmd filter have been converted to use the new one.\n\nOriginal patch from Peter Jones.\n\nSigned-off-by: Adel Gadllah \u003cadel.gadllah@gmail.com\u003e\nSigned-off-by: Peter Jones \u003cpjones@redhat.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "6e2401ad6f33de15ff00f78b88159f00a14f3b35", "tree": "7dbcb7e08703745a9a60de77114d82e2385f7c6a", "parents": [ "da9cbc87395308a21465bd25441297bbba0477e1" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Jun 18 10:15:02 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jul 03 13:21:14 2008 +0200" }, "message": "block: integrity cleanups\n\n- No need to check for NULL bio, we\u0027ll get an immediate oops anyway.\n- Make bio_integrity() a proper function.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "da9cbc87395308a21465bd25441297bbba0477e1", "tree": "fabea3326cea434c0011fa00f3eb57854162117c", "parents": [ "b984679efe1a616ec4ac919dba08286d71593900" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jun 30 20:42:08 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jul 03 13:21:14 2008 +0200" }, "message": "block: blkdev.h cleanup, move iocontext stuff to iocontext.h\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "7ba1ba12eeef0aa7113beb16410ef8b7c748e18b", "tree": "4629aabe88bf095d58eabd2f451207695bb35b08", "parents": [ "51d654e1d885607a6edd02b337105fa5c28b6d33" ], "author": { "name": "Martin K. Petersen", "email": "martin.petersen@oracle.com", "time": "Mon Jun 30 20:04:41 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jul 03 13:21:13 2008 +0200" }, "message": "block: Block layer data integrity support\n\nSome block devices support verifying the integrity of requests by way\nof checksums or other protection information that is submitted along\nwith the I/O.\n\nThis patch implements support for generating and verifying integrity\nmetadata, as well as correctly merging, splitting and cloning bios and\nrequests that have this extra information attached.\n\nSee Documentation/block/data-integrity.txt for more information.\n\nSigned-off-by: Martin K. Petersen \u003cmartin.petersen@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "244b4d56f85bcd11b21ab0b94845a3dabeed5c10", "tree": "251e64f350810bd739e724192ba6235cdc91da85", "parents": [ "1c9ce5276324ae566ca409491b99a2cc8d5986fa" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jun 12 20:12:36 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jul 03 13:21:12 2008 +0200" }, "message": "block: kill request_queue_t\n\nEverything was moved to struct request_queue a few kernel revisions\nago, maintaining the deprecated typedef to avoid breaking things.\nNow the time has come to get rid of that typedef.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "7663c1e2792a9662b23dec6e19bfcd3d55360b8f", "tree": "ff5f91fa9ac3603f242b8ae985d9cca611e3d56b", "parents": [ "6203554207728f43cfb9fd48585cd6500da73d42" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Apr 29 21:31:27 2008 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 29 12:36:54 2008 -0700" }, "message": "Improve queue_is_locked()\n\nspin_is_locked() doesn\u0027t work on UP without spinlock debugging. Make it\nsafer and just return 1 on UP, so we don\u0027t get false positives. The plan\nis to kill this debug function during the -rc cycle.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "8f45c1a58a25c3a1a2f42521445e1e786c4c0b92", "tree": "f3557e803eb0b31fba027fe22c0afe1dfa3c6d4f", "parents": [ "25a025863e024f6b86b48137b10b4960c50351b0" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 29 10:16:38 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 29 10:16:38 2008 -0700" }, "message": "block: fix queue locking verification\n\nThe new queue_flag_set/clear() functions verify that the queue is\nlocked, but in doing so they will actually instead oops if the queue\nlock hasn\u0027t been initialized at all.\n\nSo fix the lock debug test to consider the \"no lock\" case to be\nunlocked. This way you get a nice WARN_ON_ONCE() instead of a fatal\noops.\n\nBug introduced by commit 75ad23bc0fcb4f992a5d06982bf0857ab1738e9e\n(\"block: make queue flags non-atomic\").\n\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nCc: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ac9fafa1243640349aa481adf473db283a695766", "tree": "155c2371cca8971638d781269f39fa015bc6509c", "parents": [ "d7e3c3249ef23b4617393c69fe464765b4ff1645" ], "author": { "name": "Alan D. Brunelle", "email": "Alan.Brunelle@hp.com", "time": "Tue Apr 29 14:44:19 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Apr 29 14:48:55 2008 +0200" }, "message": "block: Skip I/O merges when disabled\n\nThe block I/O + elevator + I/O scheduler code spend a lot of time trying\nto merge I/Os -- rightfully so under \"normal\" circumstances. However,\nif one were to know that the incoming I/O stream was /very/ random in\nnature, the cycles are wasted.\n\nThis patch adds a per-request_queue tunable that (when set) disables\nmerge attempts (beyond the simple one-hit cache check), thus freeing up\na non-trivial amount of CPU cycles.\n\nSigned-off-by: Alan D. Brunelle \u003calan.brunelle@hp.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "d7e3c3249ef23b4617393c69fe464765b4ff1645", "tree": "3471ea20b7fb4c4a9bbd7cfb3cc952344b5501d6", "parents": [ "d34c87e4ba3d1857f80a65179e81a18705a31656" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Tue Apr 29 09:54:39 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Apr 29 14:48:55 2008 +0200" }, "message": "block: add large command support\n\nThis patch changes rq-\u003ecmd from the static array to a pointer to\nsupport large commands.\n\nWe rarely handle large commands. So for optimization, a struct request\nstill has a static array for a command. rq_init sets rq-\u003ecmd pointer\nto the static array.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "2a4aa30c5f967eb6ae874c67fa6fceeee84815f9", "tree": "fddd67e3b3697874e2a19c0e8e194190957b0e1e", "parents": [ "992b5bceee447a32ef2d617730ae0d03c063eedd" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Tue Apr 29 09:54:36 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Apr 29 14:48:55 2008 +0200" }, "message": "block: rename and export rq_init()\n\nThis rename rq_init() blk_rq_init() and export it. Any path that hands\nthe request to the block layer needs to call it to initialize the\nrequest.\n\nThis is a preparation for large command support, which needs to\ninitialize the request in a proper way (that is, just doing a memset()\nwill not work).\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "75ad23bc0fcb4f992a5d06982bf0857ab1738e9e", "tree": "8668ef63b1f420252ae41aed9e13737d49fd8054", "parents": [ "68154e90c9d1492d570671ae181d9a8f8530da55" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Tue Apr 29 14:48:33 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Apr 29 14:48:33 2008 +0200" }, "message": "block: make queue flags non-atomic\n\nWe can save some atomic ops in the IO path, if we clearly define\nthe rules of how to modify the queue flags.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "2472892a3ce17b177cc0d8099a6391949c75abf2", "tree": "3e933dc48fa87c29571f235d9fbe3498ceb74add", "parents": [ "cece933994428974f7a0ee1e8843ba5bd0b18563" ], "author": { "name": "Andi Kleen", "email": "andi@firstfloor.org", "time": "Mon Apr 21 09:51:05 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Apr 21 09:51:05 2008 +0200" }, "message": "block: fix memory hotplug and bouncing in block layer\n\nOnly noticed this while hacking something else, no test case.\n\nblk_max_low_pfn is initialized once at bootup by the block layer from\nmax_low_pfn. But max_low_pfn is not necessarily constant over the runtime of\nthe system when you consider memory hotplug. What could happen if that\nsomeone adds memory later the block layer wouldn\u0027t get updated and then start\nbouncing memory unnecessarily.\n\nAlso on 64bit blk_max_low_pfn actually isn\u0027t needed because it just disables\nbouncing essentially and there is no highmem. And nobody can pass pfns \u003e\nmax_low_pfn to the block layer, because those wouldn\u0027t have a struct page and\nI suspect block layer wouldn\u0027t be very happy without that.\n\nSo set BLK_BOUNCE_HIGH to infinity (-1ULL) on 64bit. That avoids the problem\nof having to update it on memory hotadd.\n\nOn 32bit I kept the same behaviour because at least on i386\nmemory hotadd only adds HIGHMEM, never lowmem.\n\nBLK_BOUNCE_ANY is always set to infinity on both 32 and 64bit.\n\nSigned-off-by: Andi Kleen \u003cak@suse.de\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nAcked-by: Yasunori Goto \u003cy-goto@jp.fujitsu.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "f18573abcc57844a7c3c12699d40eead8728cd8a", "tree": "99d5dcfdfe29578bb23900e63f226022f5e87281", "parents": [ "afdc1a780ef84a54b613dae6f971407748aab61c" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Fri Apr 11 12:56:52 2008 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Apr 21 09:50:08 2008 +0200" }, "message": "block: move the padding adjustment to blk_rq_map_sg\n\nblk_rq_map_user adjusts bi_size of the last bio. It breaks the rule\nthat req-\u003edata_len (the true data length) is equal to sum(bio). It\nbroke the scsi command completion code.\n\ncommit e97a294ef6938512b655b1abf17656cf2b26f709 was introduced to fix\nthe above issue. However, the partial completion code doesn\u0027t work\nwith it. The commit is also a layer violation (scsi mid-layer should\nnot know about the block layer\u0027s padding).\n\nThis patch moves the padding adjustment to blk_rq_map_sg (suggested by\nJames). The padding works like the drain buffer. This patch breaks the\nrule that req-\u003edata_len is equal to sum(sg), however, the drain buffer\nalready broke it. So this patch just restores the rule that\nreq-\u003edata_len is equal to sub(bio) without breaking anything new.\n\nNow when a low level driver needs padding, blk_rq_map_user and\nblk_rq_map_user_iov guarantee there\u0027s enough room for padding.\nblk_rq_map_sg can safely extend the last entry of a scatter list.\n\nblk_rq_map_sg must extend the last entry of a scatter list only for a\nrequest that got through bio_copy_user_iov. This patches introduces\nnew REQ_COPY_USER flag.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Tejun Heo \u003chtejun@gmail.com\u003e\nCc: Mike Christie \u003cmichaelc@cs.wisc.edu\u003e\nCc: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "e3790c7d42a545e8fe8b38b513613ca96687b670", "tree": "0b849ba46007c4d7f7a34271a76d58e7406cbad7", "parents": [ "7a85f8896f4b4a4a0249563b92af9e3161a6b467" ], "author": { "name": "Tejun Heo", "email": "htejun@gmail.com", "time": "Tue Mar 04 11:18:17 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Mar 04 11:18:17 2008 +0100" }, "message": "block: separate out padding from alignment\n\nBlock layer alignment was used for two different purposes - memory\nalignment and padding. This causes problems in lower layers because\ndrivers which only require memory alignment ends up with adjusted\nrq-\u003edata_len. Separate out padding such that padding occurs iff\ndriver explicitly requests it.\n\nTomo: restorethe code to update bio in blk_rq_map_user\n introduced by the commit 40b01b9bbdf51ae543a04744283bf2d56c4a6afa\n according to padding alignment.\n\nSigned-off-by: Tejun Heo \u003chtejun@gmail.com\u003e\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "7a85f8896f4b4a4a0249563b92af9e3161a6b467", "tree": "616c62e3c96237e874fc0f47133fbca2160913b5", "parents": [ "89b6e743788516491846724d7ef89bcac7ac9c99" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Tue Mar 04 11:17:11 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "axboe@carl.home.kernel.dk", "time": "Tue Mar 04 11:17:11 2008 +0100" }, "message": "block: restore the meaning of rq-\u003edata_len to the true data length\n\nThe meaning of rq-\u003edata_len was changed to the length of an allocated\nbuffer from the true data length. It breaks SG_IO friends and\nbsg. This patch restores the meaning of rq-\u003edata_len to the true data\nlength and adds rq-\u003eextra_len to store an extended length (due to\ndrain buffer and padding).\n\nThis patch also removes the code to update bio in blk_rq_map_user\nintroduced by the commit 40b01b9bbdf51ae543a04744283bf2d56c4a6afa.\nThe commit adjusts bio according to memory alignment\n(queue_dma_alignment). However, memory alignment is NOT padding\nalignment. This adjustment also breaks SG_IO friends and bsg. Padding\nalignment needs to be fixed in a proper way (by a separate patch).\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nSigned-off-by: Jens Axboe \u003caxboe@carl.home.kernel.dk\u003e\n" }, { "commit": "2fb98e8414c42cb14698833aac640b143b9ade4f", "tree": "ab241305b5ce3ea5ef3e76df7abe04b831cd9e34", "parents": [ "6b00769fe1502b4ad97bb327ef7ac971b208bfb5" ], "author": { "name": "Tejun Heo", "email": "htejun@gmail.com", "time": "Tue Feb 19 11:36:53 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Feb 19 11:36:53 2008 +0100" }, "message": "block: implement request_queue-\u003edma_drain_needed\n\nDraining shouldn\u0027t be done for commands where overflow may indicate\ndata integrity issues. Add dma_drain_needed callback to\nrequest_queue. Drain buffer is appened iff this function returns\nnon-zero.\n\nSigned-off-by: Tejun Heo \u003chtejun@gmail.com\u003e\nCc: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "6b00769fe1502b4ad97bb327ef7ac971b208bfb5", "tree": "2ffc51176437ebf4f8a4ab13de59a32431043f15", "parents": [ "40b01b9bbdf51ae543a04744283bf2d56c4a6afa" ], "author": { "name": "Tejun Heo", "email": "htejun@gmail.com", "time": "Tue Feb 19 11:36:35 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Feb 19 11:36:35 2008 +0100" }, "message": "block: add request-\u003eraw_data_len\n\nWith padding and draining moved into it, block layer now may extend\nrequests as directed by queue parameters, so now a request has two\nsizes - the original request size and the extended size which matches\nthe size of area pointed to by bios and later by sgs. The latter size\nis what lower layers are primarily interested in when allocating,\nfilling up DMA tables and setting up the controller.\n\nBoth padding and draining extend the data area to accomodate\ncontroller characteristics. As any controller which speaks SCSI can\nhandle underflows, feeding larger data area is safe.\n\nSo, this patch makes the primary data length field, request-\u003edata_len,\nindicate the size of full data area and add a separate length field,\nrequest-\u003eraw_data_len, for the unmodified request size. The latter is\nused to report to higher layer (userland) and where the original\nrequest size should be fed to the controller or device.\n\nSigned-off-by: Tejun Heo \u003chtejun@gmail.com\u003e\nCc: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "63a7138671c50a6f2c27bbd1a308dc75967062a3", "tree": "6d8b0d9cbc05bce2848299b61528cabc6d04d267", "parents": [ "a4ffc0a0b240a29cbe489f6db9dae112a49ef1c1" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Feb 08 12:41:03 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Feb 08 12:41:03 2008 +0100" }, "message": "block: fixup rq_init() a bit\n\nRearrange fields in cache order and initialize some fields that\nwe didn\u0027t previously init. Remove init of -\u003ecompletion_data, it\u0027s\npart of a union with -\u003ehash. Luckily clearing the rb node is the same\nas setting it to null!\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "3bc217ffe6774e7971d6a7ce6350ce806ebab044", "tree": "b1ccad14a0c23f12248092feb867d2e311db59f0", "parents": [ "8bdd3f8a6993fef2f364aca6e1a59559405773a2" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Feb 01 11:34:49 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Feb 01 11:34:49 2008 +0100" }, "message": "block: kill swap_io_context()\n\nIt blindly copies everything in the io_context, including the lock.\nThat doesn\u0027t work so well for either lock ordering or lockdep.\n\nThere seems zero point in swapping io contexts on a request to request\nmerge, so the best point of action is to just remove it.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "22b132102f1540dd40f3e41df88796829b685f1a", "tree": "20edc8316009b946ebd197b7aef7ccc041d02798", "parents": [ "640e248e44e2c550473550ca83668ceccad21dce" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jan 31 12:36:19 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Feb 01 09:26:33 2008 +0100" }, "message": "block: new end request handling interface should take unsigned byte counts\n\nNo point in passing signed integers as the byte count, they can never\nbe negative.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "023ccde109b995bb99862bf9c87efd006b1d1885", "tree": "c1a889bde7f895441bbec792f94641d4716b2887", "parents": [ "d6d48196961729b79509dcaeeb0f0fb4fbb47d29" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jan 29 14:08:06 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jan 29 21:55:14 2008 +0100" }, "message": "block: fix warning on compile with CONFIG_BLOCK\n\nstruct io_context was not defined, just add an empty forward decl.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "8d01eddf292dcd78b640418c80fb300532799cd4", "tree": "dd7f816423463e5ad10f15af22fdbd5b75cc6184", "parents": [ "f0f0052069989b80d2a3e50c9cd2f2a650bc1aea", "fa0ccd837e3dddb44c7db2f128a8bb7e4eabc21a" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 29 08:51:56 2008 +1100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 29 08:51:56 2008 +1100" }, "message": "Merge branch \u0027for-2.6.25\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-2.6.25\u0027 of git://git.kernel.dk/linux-2.6-block:\n block: implement drain buffers\n __bio_clone: don\u0027t calculate hw/phys segment counts\n block: allow queue dma_alignment of zero\n blktrace: Add blktrace ioctls to SCSI generic devices\n" }, { "commit": "f0f0052069989b80d2a3e50c9cd2f2a650bc1aea", "tree": "40ff39bc341aed8318a54d1bd61a381f41844f71", "parents": [ "68fbda7de07e56eb90dd6e58a162527411b388b1", "a65b58663d983e588aed8d1bfc75edaac2527fa7" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 29 08:51:32 2008 +1100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 29 08:51:32 2008 +1100" }, "message": "Merge branch \u0027blk-end-request\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027blk-end-request\u0027 of git://git.kernel.dk/linux-2.6-block: (30 commits)\n blk_end_request: changing xsysace (take 4)\n blk_end_request: changing ub (take 4)\n blk_end_request: cleanup of request completion (take 4)\n blk_end_request: cleanup \u0027uptodate\u0027 related code (take 4)\n blk_end_request: remove/unexport end_that_request_* (take 4)\n blk_end_request: changing scsi (take 4)\n blk_end_request: add bidi completion interface (take 4)\n blk_end_request: changing ide-cd (take 4)\n blk_end_request: add callback feature (take 4)\n blk_end_request: changing ide normal caller (take 4)\n blk_end_request: changing cpqarray (take 4)\n blk_end_request: changing cciss (take 4)\n blk_end_request: changing ide-scsi (take 4)\n blk_end_request: changing s390 (take 4)\n blk_end_request: changing mmc (take 4)\n blk_end_request: changing i2o_block (take 4)\n blk_end_request: changing viocd (take 4)\n blk_end_request: changing xen-blkfront (take 4)\n blk_end_request: changing viodasd (take 4)\n blk_end_request: changing sx8 (take 4)\n ...\n" }, { "commit": "fa0ccd837e3dddb44c7db2f128a8bb7e4eabc21a", "tree": "ade071502f3e7cba423295890d828f0f301ad731", "parents": [ "5d84070ee0a433620c57e85dac7f82faaec5fbb3" ], "author": { "name": "James Bottomley", "email": "James.Bottomley@HansenPartnership.com", "time": "Thu Jan 10 11:30:36 2008 -0600" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:54:11 2008 +0100" }, "message": "block: implement drain buffers\n\nThese DMA drain buffer implementations in drivers are pretty horrible\nto do in terms of manipulating the scatterlist. Plus they\u0027re being\ndone at least in drivers/ide and drivers/ata, so we now have code\nduplication.\n\nThe one use case for this, as I understand it is AHCI controllers doing\nPIO mode to mmc devices but translating this to DMA at the controller\nlevel.\n\nSo, what about adding a callback to the block layer that permits the\nadding of the drain buffer for the problem devices. The idea is that\nyou\u0027d do this in slave_configure after you find one of these devices.\n\nThe beauty of doing it in the block layer is that it quietly adds the\ndrain buffer to the end of the sg list, so it automatically gets mapped\n(and unmapped) without anything unusual having to be done to the\nscatterlist in driver/scsi or drivers/ata and without any alteration to\nthe transfer length.\n\nSigned-off-by: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "d38ecf935fcb10264a6bc190855d9595165e6eeb", "tree": "64e3146ef76678ad3ae8f75c32df9f25ea470953", "parents": [ "fd0928df98b9578be8a786ac0cb78a47a5e17a20" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jan 24 08:53:35 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:50:31 2008 +0100" }, "message": "io context sharing: preliminary support\n\nDetach task state from ioc, instead keep track of how many processes\nare accessing the ioc.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "fd0928df98b9578be8a786ac0cb78a47a5e17a20", "tree": "70a34cf207bea1bec28e59cf0dba7d20e7f8b0f1", "parents": [ "91525300baf162e83e923b09ca286f9205e21522" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Jan 24 08:52:45 2008 +0100" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:50:29 2008 +0100" }, "message": "ioprio: move io priority from task_struct to io_context\n\nThis is where it belongs and then it doesn\u0027t take up space for a\nprocess that doesn\u0027t do IO.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "5450d3e1d68f10be087f0855d8bad5458b50ecbe", "tree": "400126ac131621229c49c549f27838fcf3a263e7", "parents": [ "3bcddeac1c4c7e6fb90531b80f236b1a05dfe514" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Tue Dec 11 17:53:03 2007 -0500" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:37:13 2008 +0100" }, "message": "blk_end_request: cleanup \u0027uptodate\u0027 related code (take 4)\n\nThis patch converts \u0027uptodate\u0027 arguments of no longer exported\ninterfaces, end_that_request_first/last, to \u0027error\u0027, and removes\ninternal conversions for it in blk_end_request interfaces.\n\nAlso, this patch removes no longer needed end_io_error().\n\nCc: Boaz Harrosh \u003cbharrosh@panasas.com\u003e\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "3bcddeac1c4c7e6fb90531b80f236b1a05dfe514", "tree": "68e1f33b8176ff00552b1df92d16c23c28b0ecf2", "parents": [ "610d8b0c972e3b75493efef8e96175518fd736d3" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Tue Dec 11 17:52:28 2007 -0500" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:37:12 2008 +0100" }, "message": "blk_end_request: remove/unexport end_that_request_* (take 4)\n\nThis patch removes the following functions:\n o end_that_request_first()\n o end_that_request_chunk()\nand stops exporting the functions below:\n o end_that_request_last()\n\nCc: Boaz Harrosh \u003cbharrosh@panasas.com\u003e\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "e3a04fe34a3ec81ddeddb6c73fb7299716cffbb0", "tree": "080d1ec1cc3d78b3aef4e95f5334f5b4c3da3498", "parents": [ "aaa04c28cb9a1efd42541fdb7ab648231c2a2263" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Tue Dec 11 17:51:46 2007 -0500" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:37:08 2008 +0100" }, "message": "blk_end_request: add bidi completion interface (take 4)\n\nThis patch adds a variant of the interface, blk_end_bidi_request(),\nwhich completes a bidi request.\n\nBidi request must be completed as a whole, both rq and rq-\u003enext_rq\nat once. So the interface has 2 arguments for completion size.\n\nAs for -\u003eend_io, only rq-\u003eend_io is called (rq-\u003enext_rq-\u003eend_io is not\ncalled). So if special completion handling is needed, the handler\nmust be set to rq-\u003eend_io.\nAnd the handler must take care of freeing next_rq too, since\nthe interface doesn\u0027t care of it if rq-\u003eend_io is not NULL.\n\nCc: Boaz Harrosh \u003cbharrosh@panasas.com\u003e\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "e19a3ab058fe91c8c54d43dc56dccf7eb386478e", "tree": "f62d5af2338484e8a3eec1dc453dec4f949024a7", "parents": [ "5e36bb6ee8d5ff6c6114b60d2aaa1c70d4275f4e" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Tue Dec 11 17:51:02 2007 -0500" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:37:04 2008 +0100" }, "message": "blk_end_request: add callback feature (take 4)\n\nThis patch adds a variant of the interface, blk_end_request_callback(),\nwhich has driver callback feature.\n\nDrivers may need to do special works between end_that_request_first()\nand end_that_request_last().\nFor such drivers, blk_end_request_callback() allows it to pass\na callback function which is called between end_that_request_first()\nand end_that_request_last().\n\nThis interface is only for fallback of other blk_end_request interfaces.\nDrivers should avoid their tricky behaviors and use other interfaces\nas much as possible.\n\nCurrently, only one driver, ide-cd, needs this interface.\nSo this interface should/will be removed, after the driver removes\nsuch tricky behaviors.\n\no ide-cd (cdrom_newpc_intr())\n In PIO mode, cdrom_newpc_intr() needs to defer end_that_request_last()\n until the device clears DRQ_STAT and raises an interrupt after\n end_that_request_first().\n So end_that_request_first() and end_that_request_last() are called\n separately in cdrom_newpc_intr().\n\n This means blk_end_request_callback() has to return without\n completing request even if no leftover in the request.\n To satisfy the requirement, callback function has return value\n so that drivers can tell blk_end_request_callback() to return\n without completing request.\n\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "3b11313a6c2a42425bf06e92528bda6affd58dec", "tree": "c2d550b2954c106387f1ebe6badb387603002202", "parents": [ "336cdb4003200a90f4fc52a4e9ccc2baa570fffb" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Tue Dec 11 17:41:17 2007 -0500" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:35:56 2008 +0100" }, "message": "blk_end_request: add/export functions to get request size (take 4)\n\nThis patch adds/exports functions to get the size of request in bytes.\nThey are useful because blk_end_request interfaces take bytes\nas a completed I/O size instead of sectors.\n\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "336cdb4003200a90f4fc52a4e9ccc2baa570fffb", "tree": "dcb7f736738232c0e853a1ba796ca35d5b18c503", "parents": [ "91525300baf162e83e923b09ca286f9205e21522" ], "author": { "name": "Kiyoshi Ueda", "email": "k-ueda@ct.jp.nec.com", "time": "Tue Dec 11 17:40:30 2007 -0500" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:35:53 2008 +0100" }, "message": "blk_end_request: add new request completion interface (take 4)\n\nThis patch adds 2 new interfaces for request completion:\n o blk_end_request() : called without queue lock\n o __blk_end_request() : called with queue lock held\n\nblk_end_request takes \u0027error\u0027 as an argument instead of \u0027uptodate\u0027,\nwhich current end_that_request_* take.\nThe meanings of values are below and the value is used when bio is\ncompleted.\n 0 : success\n \u003c 0 : error\n\nSome device drivers call some generic functions below between\nend_that_request_{first/chunk} and end_that_request_last().\n o add_disk_randomness()\n o blk_queue_end_tag()\n o blkdev_dequeue_request()\nThese are called in the blk_end_request interfaces as a part of\ngeneric request completion.\nSo all device drivers become to call above functions.\nTo decide whether to call blkdev_dequeue_request(), blk_end_request\nuses list_empty(\u0026rq-\u003equeuelist) (blk_queued_rq() macro is added for it).\nSo drivers must re-initialize it using list_init() or so before calling\nblk_end_request if drivers use it for its specific purpose.\n(Currently, there is no driver which completes request without\n re-initializing the queuelist after used it. So rq-\u003equeuelist\n can be used for the purpose above.)\n\n\"Normal\" drivers can be converted to use blk_end_request()\nin a standard way shown below.\n\n a) end_that_request_{chunk/first}\n spin_lock_irqsave()\n (add_disk_randomness(), blk_queue_end_tag(), blkdev_dequeue_request())\n end_that_request_last()\n spin_unlock_irqrestore()\n \u003d\u003e blk_end_request()\n\n b) spin_lock_irqsave()\n end_that_request_{chunk/first}\n (add_disk_randomness(), blk_queue_end_tag(), blkdev_dequeue_request())\n end_that_request_last()\n spin_unlock_irqrestore()\n \u003d\u003e spin_lock_irqsave()\n __blk_end_request()\n spin_unlock_irqsave()\n\n c) spin_lock_irqsave()\n (add_disk_randomness(), blk_queue_end_tag(), blkdev_dequeue_request())\n end_that_request_last()\n spin_unlock_irqrestore()\n \u003d\u003e blk_end_request() or spin_lock_irqsave()\n __blk_end_request()\n spin_unlock_irqrestore()\n\nSigned-off-by: Kiyoshi Ueda \u003ck-ueda@ct.jp.nec.com\u003e\nSigned-off-by: Jun\u0027ichi Nomura \u003cj-nomura@ce.jp.nec.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "482eb689169948e9f4966fbae6be4d6bc0bfa818", "tree": "93f2e9915b34192a92442fbf800d3a9b47819909", "parents": [ "6da127ad0918f93ea93678dad62ce15ffed18797" ], "author": { "name": "Pete Wyckoff", "email": "pw@osc.edu", "time": "Tue Jan 01 10:23:02 2008 -0500" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Jan 28 10:04:46 2008 +0100" }, "message": "block: allow queue dma_alignment of zero\n\nLet queue_dma_alignment return 0 if it was specifically set to 0.\nThis permits devices with no particular alignment restrictions to\nuse arbitrary user space buffers without copying.\n\nSigned-off-by: Pete Wyckoff \u003cpw@osc.edu\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "7267c3377443322588cddaf457cf106839a60463", "tree": "5471cd70b6275999500103f0a6b49bbc5557c692", "parents": [ "5a9e77af970f14a94482a6d4dca5c48efb70deb2" ], "author": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Sat Jan 26 20:13:13 2008 +0100" }, "committer": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Sat Jan 26 20:13:13 2008 +0100" }, "message": "ide: remove REQ_TYPE_ATA_CMD\n\nBased on the earlier work by Tejun Heo.\n\nAll users are gone so we can finally remove it.\n\nCc: Tejun Heo \u003chtejun@gmail.com\u003e\nSigned-off-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\n" }, { "commit": "9b73e76f3cf63379dcf45fcd4f112f5812418d0a", "tree": "4e6bef87cd0cd6d848fc39a5ae25b981dbbe035b", "parents": [ "50d9a126240f9961cfdd063336bbeb91f77a7dce", "23c3e290fb9ce38cabc2822b47583fc8702411bf" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 25 17:19:08 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 25 17:19:08 2008 -0800" }, "message": "Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6\n\n* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (200 commits)\n [SCSI] usbstorage: use last_sector_bug flag universally\n [SCSI] libsas: abstract STP task status into a function\n [SCSI] ultrastor: clean up inline asm warnings\n [SCSI] aic7xxx: fix firmware build\n [SCSI] aacraid: fib context lock for management ioctls\n [SCSI] ch: remove forward declarations\n [SCSI] ch: fix device minor number management bug\n [SCSI] ch: handle class_device_create failure properly\n [SCSI] NCR5380: fix section mismatch\n [SCSI] sg: fix /proc/scsi/sg/devices when no SCSI devices\n [SCSI] IB/iSER: add logical unit reset support\n [SCSI] don\u0027t use __GFP_DMA for sense buffers if not required\n [SCSI] use dynamically allocated sense buffer\n [SCSI] scsi.h: add macro for enclosure bit of inquiry data\n [SCSI] sd: add fix for devices with last sector access problems\n [SCSI] fix pcmcia compile problem\n [SCSI] aacraid: add Voodoo Lite class of cards.\n [SCSI] aacraid: add new driver features flags\n [SCSI] qla2xxx: Update version number to 8.02.00-k7.\n [SCSI] qla2xxx: Issue correct MBC_INITIALIZE_FIRMWARE command.\n ...\n" }, { "commit": "29ed2a5f8c4380959f18e9cbaff13bc61e09889c", "tree": "a248e118820c47d8286808643d42fcecd72e978e", "parents": [ "14b89ef9814614f18a1fcae51e601e7e16a82ef7" ], "author": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Fri Jan 25 22:17:11 2008 +0100" }, "committer": { "name": "Bartlomiej Zolnierkiewicz", "email": "bzolnier@gmail.com", "time": "Fri Jan 25 22:17:11 2008 +0100" }, "message": "ide: remove REQ_TYPE_ATA_TASK\n\nBased on the earlier work by Tejun Heo.\n\nAll users are gone so we can finally remove it.\n\nCc: Tejun Heo \u003chtejun@gmail.com\u003e\nSigned-off-by: Bartlomiej Zolnierkiewicz \u003cbzolnier@gmail.com\u003e\n" }, { "commit": "11c3e689f1c3a73e3af7b0ea767b1b0626da8033", "tree": "0f1d109897b13c9d0f86a3ba5af088596f728cdb", "parents": [ "166a72878f76e911f2d1ce4b2310d4403e94be11" ], "author": { "name": "James Bottomley", "email": "James.Bottomley@HansenPartnership.com", "time": "Mon Dec 31 16:37:00 2007 -0600" }, "committer": { "name": "James Bottomley", "email": "James.Bottomley@HansenPartnership.com", "time": "Fri Jan 11 18:29:20 2008 -0600" }, "message": "[SCSI] block: Introduce new blk_queue_update_dma_alignment interface\n\nThe purpose of this is to allow stacked alignment settings, with the\nultimate queue alignment being set to the largest alignment requirement\nin the stack.\n\nThe reason for this is so that the SCSI mid-layer can relax the default\nalignment requirements (which are basically causing a lot of superfluous\ncopying to go on in the SG_IO interface) while allowing transports,\ndevices or HBAs to add stricter limits if they need them.\n\nAcked-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\n" }, { "commit": "2ad8b1ef11c98c5603580878aebf9f1bc74129e4", "tree": "f7bdc2484513f6ffd174b1385bb216dcf97d2c78", "parents": [ "d85532ed284e63b5c56eaf2418f262822af60be4" ], "author": { "name": "Alan D. Brunelle", "email": "Alan.Brunelle@hp.com", "time": "Wed Nov 07 14:26:56 2007 -0500" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Nov 09 13:41:32 2007 +0100" }, "message": "Add UNPLUG traces to all appropriate places\n\nAdded blk_unplug interface, allowing all invocations of unplugs to result\nin a generated blktrace UNPLUG.\n\nSigned-off-by: Alan D. Brunelle \u003cAlan.Brunelle@hp.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "6eca9004dfcb274a502438a591df5b197690afb1", "tree": "fd281ef7c016fbae03e2a27e42a53efd37c3ec63", "parents": [ "3a424f2d56613acfb9e583ec9c85a2be3e3af028" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Oct 25 10:14:47 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Mon Oct 29 11:33:06 2007 +0100" }, "message": "[BLOCK] Fix bad sharing of tag busy list on queues with shared tag maps\n\nFor the locking to work, only the tag map and tag bit map may be shared\n(incidentally, I was just explaining this to Nick yesterday, but I\napparently didn\u0027t review the code well enough myself). But we also share\nthe busy list! The busy_list must be queue private, or we need a\nblock_queue_tag covering lock as well.\n\nSo we have to move the busy_list to the queue. This\u0027ll work fine, and\nit\u0027ll actually also fix a problem with blk_queue_invalidate_tags() which\nwill invalidate tags across all shared queues. This is a bit confusing,\nthe low level driver should call it for each queue seperately since\notherwise you cannot kill tags on just a single queue for eg a hard\ndrive that stops responding. Since the function has no callers\ncurrently, it\u0027s not an issue.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "fd5d806266935179deda1502101624832eacd01f", "tree": "b0d01c2ed7d754f2a6daef6c77d108a81d8a470e", "parents": [ "bf2de6f5a4faf0197268f18d08969b003b87b6e8" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:05:02 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:05:02 2007 +0200" }, "message": "block: convert blkdev_issue_flush() to use empty barriers\n\nThen we can get rid of -\u003eissue_flush_fn() and all the driver private\nimplementations of that.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "bf2de6f5a4faf0197268f18d08969b003b87b6e8", "tree": "16830a15a7effea352445a7aba5dbb433314d3eb", "parents": [ "c07e2b41291853b19fff11ceee3657df252a4e42" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Thu Sep 27 13:01:25 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:03:56 2007 +0200" }, "message": "block: Initial support for data-less (or empty) barrier support\n\nThis implements functionality to pass down or insert a barrier\nin a queue, without having data attached to it. The -\u003eprepare_flush_fn()\ninfrastructure from data barriers are reused to provide this\nfunctionality.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "a0cd128542cd9c67f27458a08e989db486a293ce", "tree": "bc4ca6dd3cbfa230de486d79480f7a99bbfb6232", "parents": [ "992c5ddaf1b8b85d2252339c4c89adf7469c09ca" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Sep 21 10:41:07 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Oct 16 11:03:53 2007 +0200" }, "message": "block: add end_queued_request() and end_dequeued_request() helpers\n\nWe can use this helper in the elevator core for BLKPREP_KILL, and it\u0027ll\nalso be useful for the empty barrier patch.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "2da96acde0318f121ed3f5993ae9324c856ecfd4", "tree": "020f58a39c5ceb9bd3bca1a63ad22e3a2da98e57", "parents": [ "782e3b3b3804c38d5130c7f21d7ec7bf6709023f" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Oct 12 12:40:38 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Oct 12 12:40:38 2007 +0200" }, "message": "[BLOCK] Move sector_div() from blkdev.h to kernel.h\n\nWe need it even if CONFIG_BLOCK is disabled, so move it outside of\nthe block layer include system.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "d24517d793f21edab1a411da95f2c45cb88a84aa", "tree": "8ceda1f9787e226d43d3673cd6af6fcddffc98aa", "parents": [ "f5ff8422bbdd59f8c1f699df248e1b7a11073027" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Thu Sep 27 12:46:11 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@carl.home.kernel.dk", "time": "Wed Oct 10 09:25:57 2007 +0200" }, "message": "Remove flush_dry_bio_endio\n\nThe entire function of flush_dry_bio_endio is to undo the effects\nof bio_endio (when called on a barrier request). So remove the\nfunction and the call to bio_endio.\n\nThis allows us to remove \"bi_size\" from \"struct request_queue\".\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\n\n### Diffstat output\n ./block/ll_rw_blk.c | 39 ++-------------------------------------\n ./include/linux/blkdev.h | 1 -\n 2 files changed, 2 insertions(+), 38 deletions(-)\n\ndiff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "f5ff8422bbdd59f8c1f699df248e1b7a11073027", "tree": "cdd0777acc58c0badd2d0ae66f3efc2f7318e776", "parents": [ "3317fedba9446465082bcc6ce1232451ad1d51ce" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Sep 21 09:19:54 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@carl.home.kernel.dk", "time": "Wed Oct 10 09:25:57 2007 +0200" }, "message": "Fix warnings with !CONFIG_BLOCK\n\nHide everything in blkdev.h with CONFIG_BLOCK isn\u0027t set, and fixup\nthe (few) files that fail to build because they were relying on blkdev.h\npulling in extra includes for them.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "66846572bfb4ec62bcba260028cbbcbdb77bd636", "tree": "23a29655a22835a49bd1549524fc3b950a5bf261", "parents": [ "3001ca77128273cc5634d79f5306ce2e5a14ec41" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Thu Aug 16 13:31:28 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@carl.home.kernel.dk", "time": "Wed Oct 10 09:25:56 2007 +0200" }, "message": "Stop exporting blk_rq_bio_prep\n\nblk_rq_bio_prep is exported for use in exactly\none place. That place can benefit from using\nthe new blk_rq_append_bio instead.\nSo\n - change dm-emc to call blk_rq_append_bio\n - stop exporting blk_rq_bio_prep, and\n - initialise rq_disk in blk_rq_bio_prep,\n as dm-emc needs it.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\n\ndiff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "3001ca77128273cc5634d79f5306ce2e5a14ec41", "tree": "0e5904fc170afb6c01f8f0930e3c4a4ae20b19b2", "parents": [ "eea9befaccb8d43ce89585d612159761c978f056" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Thu Aug 16 13:31:27 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@carl.home.kernel.dk", "time": "Wed Oct 10 09:25:56 2007 +0200" }, "message": "New function blk_req_append_bio\n\nll_back_merge_fn is currently exported to SCSI where is it used,\ntogether with blk_rq_bio_prep, in exactly the same way these\nfunctions are used in __blk_rq_map_user.\n\nSo move the common code into a new function (blk_rq_append_bio), and\ndon\u0027t export ll_back_merge_fn any longer.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\n\ndiff .prev/block/ll_rw_blk.c ./block/ll_rw_blk.c\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "5705f7021748a69d84d6567e68e8851dab551464", "tree": "5a6dbc8fc6055c0334f4a97540e36a7844b9c482", "parents": [ "9dfa52831e96194b8649613e3131baa2c109f7dc" ], "author": { "name": "NeilBrown", "email": "neilb@suse.de", "time": "Tue Sep 25 12:35:59 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "axboe@carl.home.kernel.dk", "time": "Wed Oct 10 09:25:56 2007 +0200" }, "message": "Introduce rq_for_each_segment replacing rq_for_each_bio\n\nEvery usage of rq_for_each_bio wraps a usage of\nbio_for_each_segment, so these can be combined into\nrq_for_each_segment.\n\nWe define \"struct req_iterator\" to hold the \u0027bio\u0027 and \u0027index\u0027 that\nare needed for the double iteration.\n\nSigned-off-by: Neil Brown \u003cneilb@suse.de\u003e\n\nVarious compile fixes by me...\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "4e97182a22ed5ca6a5cbc39275d4752d5a4369da", "tree": "1bdd4bdc0c3ef77eca5336e205ab39fc34b357d3", "parents": [ "d941cf5e373c356723fa648b9f0302a11c9b1770" ], "author": { "name": "Qi Yong", "email": "qiyong@mail.fc-cn.com", "time": "Wed Jul 25 08:45:51 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Jul 27 08:08:24 2007 +0200" }, "message": "[patch] QUEUE_FLAG_READFULL QUEUE_FLAG_WRITEFULL comment fix\n\nThe two comments were transposed.\n\nSigned-off-by: Qi Yong \u003cqiyong@mail.fc-cn.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "71f65e6bd7651610d2d6aeb3c12aab63667ace30", "tree": "ddc9680ef528af37326f25a16a6e3d7e19c4ac7f", "parents": [ "165125e1e480f9510a5ffcfbfee4e3ee38c05f23" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 24 10:29:42 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 24 10:29:42 2007 +0200" }, "message": "[BLOCK] Add request_queue_t and mark it deprecated\n\nAndrew thinks I should be nice and allow outside code to at least just\ncompile, so add the request_queue_t typedef back and mark it deprecated.\nIt\u0027ll warn people that this type is going away soonish.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "165125e1e480f9510a5ffcfbfee4e3ee38c05f23", "tree": "8009c8a5ff09e26dc2418d42f66ecafb055c52a2", "parents": [ "f695baf2df9e0413d3521661070103711545207a" ], "author": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 24 09:28:11 2007 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jul 24 09:28:11 2007 +0200" }, "message": "[BLOCK] Get rid of request_queue_t typedef\n\nSome of the code has been gradually transitioned to using the proper\nstruct request_queue, but there\u0027s lots left. So do a full sweet of\nthe kernel and get rid of this typedef and replace its uses with\nthe proper type.\n\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" } ], "next": "41e1703b9b88cf9b5e91cdd2f7dcded3ec3917cb" }