)]}' { "log": [ { "commit": "a2887097f25cd38cadfc11d10769e2b349fb5eca", "tree": "cd4adcb305365d6ba9acd2c02d4eb9d0125c6f8d", "parents": [ "8abfc6e7a45eb74e51904bbae676fae008b11366", "005a1d15f5a6b2bb4ada80349513effbf22b4588" ], "author": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 22 17:07:18 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Oct 22 17:07:18 2010 -0700" }, "message": "Merge branch \u0027for-2.6.37/barrier\u0027 of git://git.kernel.dk/linux-2.6-block\n\n* \u0027for-2.6.37/barrier\u0027 of git://git.kernel.dk/linux-2.6-block: (46 commits)\n xen-blkfront: disable barrier/flush write support\n Added blk-lib.c and blk-barrier.c was renamed to blk-flush.c\n block: remove BLKDEV_IFL_WAIT\n aic7xxx_old: removed unused \u0027req\u0027 variable\n block: remove the BH_Eopnotsupp flag\n block: remove the BLKDEV_IFL_BARRIER flag\n block: remove the WRITE_BARRIER flag\n swap: do not send discards as barriers\n fat: do not send discards as barriers\n ext4: do not send discards as barriers\n jbd2: replace barriers with explicit flush / FUA usage\n jbd2: Modify ASYNC_COMMIT code to not rely on queue draining on barrier\n jbd: replace barriers with explicit flush / FUA usage\n nilfs2: replace barriers with explicit flush / FUA usage\n reiserfs: replace barriers with explicit flush / FUA usage\n gfs2: replace barriers with explicit flush / FUA usage\n btrfs: replace barriers with explicit flush / FUA usage\n xfs: replace barriers with explicit flush / FUA usage\n block: pass gfp_mask and flags to sb_issue_discard\n dm: convey that all flushes are processed as empty\n ...\n" }, { "commit": "2a48fc0ab24241755dc93bfd4f01d68efab47f5a", "tree": "fa9ae10ce89b26b7d8ae9ce24bdfda5e3007b763", "parents": [ "613655fa39ff6957754fa8ceb8559980920eb8ee" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Wed Jun 02 14:28:52 2010 +0200" }, "committer": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Tue Oct 05 15:01:10 2010 +0200" }, "message": "block: autoconvert trivial BKL users to private mutex\n\nThe block device drivers have all gained new lock_kernel\ncalls from a recent pushdown, and some of the drivers\nwere already using the BKL before.\n\nThis turns the BKL into a set of per-driver mutexes.\nStill need to check whether this is safe to do.\n\nfile\u003d$1\nname\u003d$2\nif grep -q lock_kernel ${file} ; then\n if grep -q \u0027include.*linux.mutex.h\u0027 ${file} ; then\n sed -i \u0027/include.*\u003clinux\\/smp_lock.h\u003e/d\u0027 ${file}\n else\n sed -i \u0027s/include.*\u003clinux\\/smp_lock.h\u003e.*$/include \u003clinux\\/mutex.h\u003e/g\u0027 ${file}\n fi\n sed -i ${file} \\\n -e \"/^#include.*linux.mutex.h/,$ {\n 1,/^\\(static\\|int\\|long\\)/ {\n /^\\(static\\|int\\|long\\)/istatic DEFINE_MUTEX(${name}_mutex);\n\n} }\" \\\n -e \"s/\\(un\\)*lock_kernel\\\u003e[ ]*()/mutex_\\1lock(\\\u0026${name}_mutex)/g\" \\\n -e \u0027/[ ]*cycle_kernel_lock();/d\u0027\nelse\n sed -i -e \u0027/include.*\\\u003csmp_lock.h\\\u003e/d\u0027 ${file} \\\n -e \u0027/cycle_kernel_lock()/d\u0027\nfi\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\n" }, { "commit": "4913efe456c987057e5d36a3f0a55422a9072cae", "tree": "295f04a7214e1933df3301dd42c12ff3f282a22c", "parents": [ "6958f145459ca7ad9715024de97445addacb8510" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Fri Sep 03 11:56:16 2010 +0200" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Fri Sep 10 12:35:36 2010 +0200" }, "message": "block: deprecate barrier and replace blk_queue_ordered() with blk_queue_flush()\n\nBarrier is deemed too heavy and will soon be replaced by FLUSH/FUA\nrequests. Deprecate barrier. All REQ_HARDBARRIERs are failed with\n-EOPNOTSUPP and blk_queue_ordered() is replaced with simpler\nblk_queue_flush().\n\nblk_queue_flush() takes combinations of REQ_FLUSH and FUA. If a\ndevice has write cache and can flush it, it should set REQ_FLUSH. If\nthe device can handle FUA writes, it should also set REQ_FUA.\n\nAll blk_queue_ordered() users are converted.\n\n* ORDERED_DRAIN is mapped to 0 which is the default value.\n* ORDERED_DRAIN_FLUSH is mapped to REQ_FLUSH.\n* ORDERED_DRAIN_FLUSH_FUA is mapped to REQ_FLUSH | REQ_FUA.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nAcked-by: Boaz Harrosh \u003cbharrosh@panasas.com\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nCc: Michael S. Tsirkin \u003cmst@redhat.com\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nCc: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Geert Uytterhoeven \u003cGeert.Uytterhoeven@sonycom.com\u003e\nCc: David S. Miller \u003cdavem@davemloft.net\u003e\nCc: Alasdair G Kergon \u003cagk@redhat.com\u003e\nCc: Pierre Ossman \u003cdrzeus@drzeus.cx\u003e\nCc: Stefan Weinhuber \u003cwein@de.ibm.com\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "6958f145459ca7ad9715024de97445addacb8510", "tree": "c8c945eb68ceb88bd34647d7bcaedd13a0d753ca", "parents": [ "589d7ed02ade0d06a3510da2e15a7edfdb2ef3d8" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Fri Sep 03 11:56:16 2010 +0200" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Fri Sep 10 12:35:36 2010 +0200" }, "message": "block: kill QUEUE_ORDERED_BY_TAG\n\nNobody is making meaningful use of ORDERED_BY_TAG now and queue\ndraining for barrier requests will be removed soon which will render\nthe advantage of tag ordering moot. Kill ORDERED_BY_TAG. The\nfollowing users are affected.\n\n* brd: converted to ORDERED_DRAIN.\n* virtio_blk: ORDERED_TAG path was already marked deprecated. Removed.\n* xen-blkfront: ORDERED_TAG case dropped.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nCc: Christoph Hellwig \u003chch@infradead.org\u003e\nCc: Nick Piggin \u003cnpiggin@kernel.dk\u003e\nCc: Michael S. Tsirkin \u003cmst@redhat.com\u003e\nCc: Jeremy Fitzhardinge \u003cjeremy@xensource.com\u003e\nCc: Chris Wright \u003cchrisw@sous-sol.org\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "8a6cfeb6deca3a8fefd639d898b0d163c0b5d368", "tree": "9a633ad48c3b1ada0519ee7bade0602f940037f6", "parents": [ "34484062445fe905bf02c72f87ddda21881acda3" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Thu Jul 08 10:18:46 2010 +0200" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Sat Aug 07 18:25:00 2010 +0200" }, "message": "block: push down BKL into .locked_ioctl\n\nAs a preparation for the removal of the big kernel\nlock in the block layer, this removes the BKL\nfrom the common ioctl handling code, moving it\ninto every single driver still using it.\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: Christoph Hellwig \u003chch@infradead.org\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "00fff26539bfe3fad21c164fc4002d9ede056fb0", "tree": "4909c8eed03133b1d46f689e465ed1f579b8e282", "parents": [ "afc23068103ccfbf1917eb2a007bc15ab5418cc9" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Sat Jul 03 17:45:40 2010 +0900" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Sat Aug 07 18:24:15 2010 +0200" }, "message": "block: remove q-\u003eprepare_flush_fn completely\n\nThis removes q-\u003eprepare_flush_fn completely (changes the\nblk_queue_ordered API).\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nReviewed-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "7b6d91daee5cac6402186ff224c3af39d79f4a0e", "tree": "b1518cf0b6c301178e0a320f80610cd5b3aa7625", "parents": [ "33659ebbae262228eef4e0fe990f393d1f0ed941" ], "author": { "name": "Christoph Hellwig", "email": "hch@lst.de", "time": "Sat Aug 07 18:20:39 2010 +0200" }, "committer": { "name": "Jens Axboe", "email": "jaxboe@fusionio.com", "time": "Sat Aug 07 18:20:39 2010 +0200" }, "message": "block: unify flags for struct bio and struct request\n\nRemove the current bio flags and reuse the request flags for the bio, too.\nThis allows to more easily trace the type of I/O from the filesystem\ndown to the block driver. There were two flags in the bio that were\nmissing in the requests: BIO_RW_UNPLUG and BIO_RW_AHEAD. Also I\u0027ve\nrenamed two request flags that had a superflous RW in them.\n\nNote that the flags are in bio.h despite having the REQ_ name - as\nblkdev.h includes bio.h that is the only way to go for now.\n\nSigned-off-by: Christoph Hellwig \u003chch@lst.de\u003e\nSigned-off-by: Jens Axboe \u003cjaxboe@fusionio.com\u003e\n" }, { "commit": "b7c335713ea130d707c22d7f7c57a8eca75ded7e", "tree": "302213166522d0af8bcb01417b69cd7bd445cb49", "parents": [ "0e3c9a2284f5417f196e327c254d0b84c9ee8929" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed May 26 15:41:14 2010 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Tue Jun 01 11:09:20 2010 +0200" }, "message": "brd: support discard\n\nSupport discard requests in brd by zeroing or deleting the underlying backing\npages. This is simply to help with testing and documentation nature of\nbrd code.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "5a0e3ad6af8660be21ca98a971cd00f331318c05", "tree": "5bfb7be11a03176a87296a43ac6647975c00a1d1", "parents": [ "ed391f4ebf8f701d3566423ce8f17e614cde9806" ], "author": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Wed Mar 24 17:04:11 2010 +0900" }, "committer": { "name": "Tejun Heo", "email": "tj@kernel.org", "time": "Tue Mar 30 22:02:32 2010 +0900" }, "message": "include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h\n\npercpu.h is included by sched.h and module.h and thus ends up being\nincluded when building most .c files. percpu.h includes slab.h which\nin turn includes gfp.h making everything defined by the two files\nuniversally available and complicating inclusion dependencies.\n\npercpu.h -\u003e slab.h dependency is about to be removed. Prepare for\nthis change by updating users of gfp and slab facilities include those\nheaders directly instead of assuming availability. As this conversion\nneeds to touch large number of source files, the following script is\nused as the basis of conversion.\n\n http://userweb.kernel.org/~tj/misc/slabh-sweep.py\n\nThe script does the followings.\n\n* Scan files for gfp and slab usages and update includes such that\n only the necessary includes are there. ie. if only gfp is used,\n gfp.h, if slab is used, slab.h.\n\n* When the script inserts a new include, it looks at the include\n blocks and try to put the new include such that its order conforms\n to its surrounding. It\u0027s put in the include block which contains\n core kernel includes, in the same order that the rest are ordered -\n alphabetical, Christmas tree, rev-Xmas-tree or at the end if there\n doesn\u0027t seem to be any matching order.\n\n* If the script can\u0027t find a place to put a new include (mostly\n because the file doesn\u0027t have fitting include block), it prints out\n an error message indicating which .h file needs to be added to the\n file.\n\nThe conversion was done in the following steps.\n\n1. The initial automatic conversion of all .c files updated slightly\n over 4000 files, deleting around 700 includes and adding ~480 gfp.h\n and ~3000 slab.h inclusions. The script emitted errors for ~400\n files.\n\n2. Each error was manually checked. Some didn\u0027t need the inclusion,\n some needed manual addition while adding it to implementation .h or\n embedding .c file was more appropriate for others. This step added\n inclusions to around 150 files.\n\n3. The script was run again and the output was compared to the edits\n from #2 to make sure no file was left behind.\n\n4. Several build tests were done and a couple of problems were fixed.\n e.g. lib/decompress_*.c used malloc/free() wrappers around slab\n APIs requiring slab.h to be added manually.\n\n5. The script was run on all .h files but without automatically\n editing them as sprinkling gfp.h and slab.h inclusions around .h\n files could easily lead to inclusion dependency hell. Most gfp.h\n inclusion directives were ignored as stuff from gfp.h was usually\n wildly available and often used in preprocessor macros. Each\n slab.h inclusion directive was examined and added manually as\n necessary.\n\n6. percpu.h was updated not to include slab.h.\n\n7. Build test were done on the following configurations and failures\n were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my\n distributed build env didn\u0027t work with gcov compiles) and a few\n more options had to be turned off depending on archs to make things\n build (like ipr on powerpc/64 which failed due to missing writeq).\n\n * x86 and x86_64 UP and SMP allmodconfig and a custom test config.\n * powerpc and powerpc64 SMP allmodconfig\n * sparc and sparc64 SMP allmodconfig\n * ia64 SMP allmodconfig\n * s390 SMP allmodconfig\n * alpha SMP allmodconfig\n * um on x86_64 SMP allmodconfig\n\n8. percpu.h modifications were reverted so that it could be applied as\n a separate patch and serve as bisection point.\n\nGiven the fact that I had only a couple of failures from tests on step\n6, I\u0027m fairly confident about the coverage of this conversion patch.\nIf there is a breakage, it\u0027s likely to be something in one of the arch\nheaders which should be easily discoverable easily on most builds of\nthe specific arch.\n\nSigned-off-by: Tejun Heo \u003ctj@kernel.org\u003e\nGuess-its-ok-by: Christoph Lameter \u003ccl@linux-foundation.org\u003e\nCc: Ingo Molnar \u003cmingo@redhat.com\u003e\nCc: Lee Schermerhorn \u003cLee.Schermerhorn@hp.com\u003e\n" }, { "commit": "086fa5ff0854c676ec333760f4c0154b3b242616", "tree": "ee63fb3c7c7d964bd799355b7cde18ba95f91f07", "parents": [ "eb28d31bc97e6374d81f404da309401ffaed467b" ], "author": { "name": "Martin K. Petersen", "email": "martin.petersen@oracle.com", "time": "Fri Feb 26 00:20:38 2010 -0500" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Fri Feb 26 13:58:08 2010 +0100" }, "message": "block: Rename blk_queue_max_sectors to blk_queue_max_hw_sectors\n\nThe block layer calling convention is blk_queue_\u003climit name\u003e.\nblk_queue_max_sectors predates this practice, leading to some confusion.\nRename the function to appropriately reflect that its intended use is to\nset max_hw_sectors.\n\nAlso introduce a temporary wrapper for backwards compability. This can\nbe removed after the merge window is closed.\n\nSigned-off-by: Martin K. Petersen \u003cmartin.petersen@oracle.com\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "83d5cde47dedf01b6a4a4331882cbc0a7eea3c2e", "tree": "f8ba5e263717d35cd444fcc65898d2ed352af1ae", "parents": [ "7b021967c5e1463936042c8da72b550d3cabe9ac" ], "author": { "name": "Alexey Dobriyan", "email": "adobriyan@gmail.com", "time": "Mon Sep 21 17:01:13 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Sep 22 07:17:25 2009 -0700" }, "message": "const: make block_device_operations const\n\nSigned-off-by: Alexey Dobriyan \u003cadobriyan@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "1adbee50fd6fce5af4feb34d2db93cfe4d2066a4", "tree": "77a6a68fa675da7d0722c1239513e9c4b27d1732", "parents": [ "0e0c62123b517d2b3c26922342c0cc5bb63a93f8" ], "author": { "name": "Robert P. J. Day", "email": "rpjday@crashcourse.ca", "time": "Wed Jun 10 12:57:08 2009 -0700" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Jun 10 23:07:15 2009 +0200" }, "message": "ramdisk: remove long-deprecated \"ramdisk\u003d\" boot-time parameter\n\nThe \"ramdisk\" parameter was removed from the defunct rd.c file quite some\ntime ago, in favour of the more specific \"ramdisk_size\" parameter so, for\nconsistency, the same should be done here.\n\nSigned-off-by: Robert P. J. Day \u003crpjday@crashcourse.ca\u003e\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "c2572f2b4ffc27ba79211aceee3bef53a59bb5cd", "tree": "8c6680ad7778659c447c2a60b8565490b0d6f427", "parents": [ "dfbc4752eab33e66f113f9daa2effbe241cd661d" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Apr 15 10:32:07 2009 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Apr 15 12:10:13 2009 +0200" }, "message": "brd: fix cacheflushing\n\nbrd is missing a flush_dcache_page. On 2nd thoughts, perhaps it is the\npagecache\u0027s responsibility to flush user virtual aliases (the driver of\ncourse should flush kernel virtual mappings)... but anyway, there\nalready exists cache flushing for one direction of transfer, so we\nshould add the other.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "dfbc4752eab33e66f113f9daa2effbe241cd661d", "tree": "3c27a1989452261b681ec42c8a16cce70f91deb3", "parents": [ "297dbf50d7ab0539cf9cf7f2a66918665a18e45e" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Apr 15 10:27:07 2009 +0200" }, "committer": { "name": "Jens Axboe", "email": "jens.axboe@oracle.com", "time": "Wed Apr 15 12:10:13 2009 +0200" }, "message": "brd: support barriers\n\nbrd is always ordered (not that it matters, as it is defined not to\nsurvive when the system goes down). So tell the block layer it is\nordered, which might be of help with testing filesystems.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Jens Axboe \u003cjens.axboe@oracle.com\u003e\n" }, { "commit": "2b9ecd03335c7be9b8ce84f4499f4b6785a655ee", "tree": "85cf9b37cdbff0a92d892c54711443e425860b9c", "parents": [ "60ad23400717f70b8f0ee623b50d343d45f7b135" ], "author": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Sun Mar 02 09:24:35 2008 -0500" }, "committer": { "name": "Al Viro", "email": "viro@zeniv.linux.org.uk", "time": "Tue Oct 21 07:47:44 2008 -0400" }, "message": "[PATCH] switch brd\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": "c82f2966015a2c9708fb8f20694ef7ba8567d2e1", "tree": "3b0234770d69a0bdbe7dfbc34ae3e5aa8f274621", "parents": [ "f3944d61ddc65722539ffd7b6f5b7c7217c136cc" ], "author": { "name": "Akinobu Mita", "email": "akinobu.mita@gmail.com", "time": "Wed Aug 20 14:09:09 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Aug 20 15:40:30 2008 -0700" }, "message": "brd: fix name argument of unregister_blkdev()\n\nThe name of brd block device is \"ramdisk\", it\u0027s not \"brd\".\n(The block device is registered by register_blkdev(RAMDISK_MAJOR, \"ramdisk\")\nSo it should be unregistered by unregister_blkdev(RAMDISK_MAJOR, \"ramdisk\")\n\nSigned-off-by: Akinobu Mita \u003cakinobu.mita@gmail.com\u003e\nAcked-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "efedf51c866130945b5db755cb58670e60205d83", "tree": "c98b36ddbfe6178c73f913562ffaf324cafe1ec3", "parents": [ "16104b5504fa8be130f7f127a5a1c7dd774efc44" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Wed Jun 04 17:18:42 2008 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 05 14:23:12 2008 -0700" }, "message": "Add \u0027rd\u0027 alias to new brd ramdisk driver\n\nAlias brd to rd in the hope of helping legacy users. Suggested by Jan.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "53978d0a7a27eb036b9bf33c4caa06257a9dbed7", "tree": "3deb746ef8ee21647985c970c1130325afd90773", "parents": [ "6089093e588ee3f6aed99d08b1cf5ea37c52cf97" ], "author": { "name": "Marcin Krol", "email": "hawk@pld-linux.org", "time": "Fri May 23 13:04:46 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat May 24 09:56:11 2008 -0700" }, "message": "brd: don\u0027t show ramdisks in /proc/partitions\n\nIn 2.6.25, ramdisk devices show up in /proc/partitions, which is a\nbehaviour change from the old rd.c. Add GENHD_FL_SUPPRESS_PARTITION_INFO,\nwhich was present in rd.c.\n\nAll kernels prior to 2.6.25 weren\u0027t displaying ramdisks in\n/proc/partitions. Since there are many userspace tools using information\nfrom /proc/partitions some of them may now behave incorrectly (I didn\u0027t\ntested any though). For example before 2.6.25 /proc/partitions was empty\nif no block devices like hard disks and such were detected by kernel. Now\nall 16 ramdisks are always visible there. Some software may rely on such\ninformation (I mean, on empty /proc/partitions).\n\nThere was quite similar situation back in 2004, and ramdisks were excluded\nback from displaying. Thats why I called this a regression (maybe a bit\nunfortunate). See this patch for info:\nhttp://kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.3-rc2/2.6.3-rc2-mm1/broken-out/nbd-proc-partitions-fix.patch\n\nI also think that someone somewhere (long time ago) excluded ramdisks from\n/proc/partitions for good reasons. It is possible that now such new\n\"feature\" is harmless, but I think there are more chances that someone\nwill say \"hey, /proc/partitions has changed, now my software doesn\u0027t work\"\nthen \"hey where did my new 2.6.25 feature go\". nbd devices are also\nexcluded, maybe for very same (unknown to me) reasons.\n\nSigned-off-by: Marcin Krol \u003chawk@pld-linux.org\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "d7853d1f8932c847a8d7b3b38e6baedf77148cfb", "tree": "7307493afd5fd728150c1848509942461064ea5f", "parents": [ "237fc6e7a35076f584b9d0794a5204fe4bd9b9e5" ], "author": { "name": "Laurent Vivier", "email": "Laurent.Vivier@bull.net", "time": "Wed Apr 30 00:55:06 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Wed Apr 30 08:29:53 2008 -0700" }, "message": "brd: modify ramdisk device to be able to manage partitions\n\nThis patch adds partition management for Block RAM Device (BRD).\n\nThis patch is done to keep in sync BRD and loop device drivers.\n\nThis patch adds a parameter to the module, max_part, to specify\nthe maximum number of partitions per RAM device.\n\nExample:\n\n# modprobe brd max_part\u003d63\n# ls -l /dev/ram*\nbrw-rw---- 1 root disk 1, 0 2008-04-03 13:39 /dev/ram0\nbrw-rw---- 1 root disk 1, 64 2008-04-03 13:39 /dev/ram1\nbrw-rw---- 1 root disk 1, 640 2008-04-03 13:39 /dev/ram10\nbrw-rw---- 1 root disk 1, 704 2008-04-03 13:39 /dev/ram11\nbrw-rw---- 1 root disk 1, 768 2008-04-03 13:39 /dev/ram12\nbrw-rw---- 1 root disk 1, 832 2008-04-03 13:39 /dev/ram13\nbrw-rw---- 1 root disk 1, 896 2008-04-03 13:39 /dev/ram14\nbrw-rw---- 1 root disk 1, 960 2008-04-03 13:39 /dev/ram15\nbrw-rw---- 1 root disk 1, 128 2008-04-03 13:39 /dev/ram2\nbrw-rw---- 1 root disk 1, 192 2008-04-03 13:39 /dev/ram3\nbrw-rw---- 1 root disk 1, 256 2008-04-03 13:39 /dev/ram4\nbrw-rw---- 1 root disk 1, 320 2008-04-03 13:39 /dev/ram5\nbrw-rw---- 1 root disk 1, 384 2008-04-03 13:39 /dev/ram6\nbrw-rw---- 1 root disk 1, 448 2008-04-03 13:39 /dev/ram7\nbrw-rw---- 1 root disk 1, 512 2008-04-03 13:39 /dev/ram8\nbrw-rw---- 1 root disk 1, 576 2008-04-03 13:39 /dev/ram9\n# fdisk /dev/ram0\nDevice contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel\nBuilding a new DOS disklabel. Changes will remain in memory only,\nuntil you decide to write them. After that, of course, the previous\ncontent won\u0027t be recoverable.\n\nWarning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)\n\nCommand (m for help): o\nBuilding a new DOS disklabel. Changes will remain in memory only,\nuntil you decide to write them. After that, of course, the previous\ncontent won\u0027t be recoverable.\n\nWarning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)\n\nCommand (m for help): n\nCommand action\n e extended\n p primary partition (1-4)\np\nPartition number (1-4): 1\nFirst cylinder (1-2, default 1): 1\nLast cylinder or +size or +sizeM or +sizeK (1-2, default 2): 2\n\nCommand (m for help): w\nThe partition table has been altered!\n\nCalling ioctl() to re-read partition table.\nSyncing disks.\n# ls -l /dev/ram0*\nbrw-rw---- 1 root disk 1, 0 2008-04-03 13:40 /dev/ram0\nbrw-rw---- 1 root disk 1, 1 2008-04-03 13:40 /dev/ram0p1\n# mkfs /dev/ram0p1\nmke2fs 1.40-WIP (14-Nov-2006)\nFilesystem label\u003d\nOS type: Linux\nBlock size\u003d1024 (log\u003d0)\nFragment size\u003d1024 (log\u003d0)\n4016 inodes, 16032 blocks\n801 blocks (5.00%) reserved for the super user\nFirst data block\u003d1\nMaximum filesystem blocks\u003d16515072\n2 block groups\n8192 blocks per group, 8192 fragments per group\n2008 inodes per group\nSuperblock backups stored on blocks:\n\t8193\n\nWriting inode tables: done\nWriting superblocks and filesystem accounting information: done\n\nThis filesystem will be automatically checked every 26 mounts or\n180 days, whichever comes first. Use tune2fs -c or -i to override.\n# mount /dev/ram0p1 /mnt\ndf /mnt\nFilesystem 1K-blocks Used Available Use% Mounted on\n/dev/ram0p1 15521 138 14582 1% /mnt\n# ls -l /mnt\ntotal 12\ndrwx------ 2 root root 12288 2008-04-03 13:41 lost+found\n# umount /mnt\n# rmmod brd\n\nSigned-off-by: Laurent Vivier \u003cLaurent.Vivier@bull.net\u003e\nAcked-by: Nick Piggin \u003cnickpiggin@yahoo.com.au\u003e\nCc: Al Viro \u003cviro@zeniv.linux.org.uk\u003e\nCc: Jens Axboe \u003cjens.axboe@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "30afcb4bd2762fa4b87b17ada9500aa46dc10b1b", "tree": "0920f491a37683a8784c146270b98f82a7e0aa2c", "parents": [ "423bad600443c590f34ed7ce357591f76f48f137" ], "author": { "name": "Jared Hulbert", "email": "jaredeh@gmail.com", "time": "Mon Apr 28 02:13:02 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Apr 28 08:58:23 2008 -0700" }, "message": "return pfn from direct_access, for XIP\n\nAlter the block device -\u003edirect_access() API to work with the new\nget_xip_mem() API (that requires both kaddr and pfn are returned).\n\nSome architectures will not do the right thing in their virt_to_page() for use\nby XIP (to translate from the kernel virtual address returned by\ndirect_access(), to a user mappable pfn in XIP\u0027s page fault handler.\n\nHowever, we can\u0027t switch it to just return the pfn and not the kaddr, because\nwe have no good way to get a kva from a pfn, and XIP requires the kva for its\nread(2) and write(2) handlers. So we have to return both.\n\nSigned-off-by: Jared Hulbert \u003cjaredeh@gmail.com\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nCc: Carsten Otte \u003ccotte@de.ibm.com\u003e\nCc: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: linux-mm@kvack.org\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "26defe34e48e18b058b773f60467729c64917490", "tree": "e186efc0a8661110b119c18a74089788097298bb", "parents": [ "807501475fce0ebe68baedf87f202c3e4ee0d12c" ], "author": { "name": "Petr Tesarik", "email": "ptesarik@suse.cz", "time": "Tue Apr 22 05:36:52 2008 +0200" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Apr 22 13:38:03 2008 -0700" }, "message": "fix brd allocation flags\n\nWhile looking at the implementation of the Ram backed block device\ndriver, I stumbled across a write-only local variable, which makes\nlittle sense, so I assume it should actually work like this:\n\nSigned-off-by: Petr Tesarik \u003cptesarik@suse.cz\u003e\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "75acb9cd2ef0bbb463098fdd40cbcdda79d45fa3", "tree": "acb8f0a63ac1249146041b06eaaa003ea24c8c7a", "parents": [ "9db5579be4bb5320c3248f6acf807aedf05ae143" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Feb 08 04:19:50 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:30 2008 -0800" }, "message": "rd: support XIP\n\nSupport direct_access XIP method with brd.\n\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "9db5579be4bb5320c3248f6acf807aedf05ae143", "tree": "fde09bbeb427946b30d2e0fb6b00494a42488052", "parents": [ "daeb51e62cacde31c8245866e1096ff79a0c83fe" ], "author": { "name": "Nick Piggin", "email": "npiggin@suse.de", "time": "Fri Feb 08 04:19:49 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Fri Feb 08 09:22:30 2008 -0800" }, "message": "rewrite rd\n\nThis is a rewrite of the ramdisk block device driver.\n\nThe old one is really difficult because it effectively implements a block\ndevice which serves data out of its own buffer cache. It relies on the dirty\nbit being set, to pin its backing store in cache, however there are non\ntrivial paths which can clear the dirty bit (eg. try_to_free_buffers()),\nwhich had recently lead to data corruption. And in general it is completely\nwrong for a block device driver to do this.\n\nThe new one is more like a regular block device driver. It has no idea about\nvm/vfs stuff. It\u0027s backing store is similar to the buffer cache (a simple\nradix-tree of pages), but it doesn\u0027t know anything about page cache (the pages\nin the radix tree are not pagecache pages).\n\nThere is one slight downside -- direct block device access and filesystem\nmetadata access goes through an extra copy and gets stored in RAM twice.\nHowever, this downside is only slight, because the real buffercache of the\ndevice is now reclaimable (because we\u0027re not playing crazy games with it), so\nunder memory intensive situations, footprint should effectively be the same --\nmaybe even a slight advantage to the new driver because it can also reclaim\nbuffer heads.\n\nThe fact that it now goes through all the regular vm/fs paths makes it\nmuch more useful for testing, too.\n\n text data bss dec hex filename\n 2837 849 384 4070 fe6 drivers/block/rd.o\n 3528 371 12 3911 f47 drivers/block/brd.o\n\nText is larger, but data and bss are smaller, making total size smaller.\n\nA few other nice things about it:\n- Similar structure and layout to the new loop device handlinag.\n- Dynamic ramdisk creation.\n- Runtime flexible buffer head size (because it is no longer part of the\n ramdisk code).\n- Boot / load time flexible ramdisk size, which could easily be extended\n to a per-ramdisk runtime changeable size (eg. with an ioctl).\n- Can use highmem for the backing store.\n\n[akpm@linux-foundation.org: fix build]\n[byron.bbradley@gmail.com: make rd_size non-static]\nSigned-off-by: Nick Piggin \u003cnpiggin@suse.de\u003e\nSigned-off-by: Byron Bradley \u003cbyron.bbradley@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ] }