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Date: Mon, 14 Jul 2008 16:12:04 +0900 From: Tejun Heo <tj@...nel.org> To: jens.axboe@...cle.com, James.Bottomley@...senPartnership.com, bharrosh@...asas.com, greg.freemyer@...il.com, linux-scsi@...r.kernel.org, brking@...ux.vnet.ibm.com, liml@....ca, viro@....linux.org.uk, linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org Subject: [PATCHSET 2.6.26] block: implement extended devt, take #2 Hello, all. This is the second take of block-extended-devt patchset and contains the following 10 patches. 0001-block-misc-updates.patch 0002-block-make-variable-and-argument-names-more-consist.patch 0003-block-don-t-depend-on-consecutive-minor-space.patch 0004-block-fix-disk-part-dereferencing-race.patch 0005-block-always-use-__-disk-part-all-_stat_-and-kil.patch 0006-block-drop-underbars-from-__-disk-part-all-_stat_.patch 0007-block-implement-extended-dev-numbers.patch 0008-block-adjust-formatting-for-large-minors-and-add-ex.patch 0009-sd-ide-disk-apply-extended-minors-to-sd-and-ide.patch 0010-block-implement-CONFIG_DEBUG_BLOCK_EXT_DEVT.patch 0001-0002 are trivial preparation patches. 0003 implements accessors and applies them to insulate consecutive device number assumption and help fixing partition dereferencing problem. 0004-0006 fixes partition dereferencing bug and simplifies stats handling. 0007-0010 implement and apply extended devt. Changes from the last take[L] are... * Partition dereferencing problem is fixed. This is included in the patchset as it depends on partition helpers implemented by 0003 and extended devt changes depend on partition dereference fix. Even if the extended devt patches get nacked, 0001-0006 should be worthwhile cleanup. * For extended devts, kobj_map doesn't make much sense as there's no fixed MAJ:MIN mapping and kernel can't take any default action for missing device, so extended devt lookup no longer goes through kobj_map. Instead, it's directly looked up using ida. * ext devt ida lookup / removal locking fixed. A separate mutex is used to protect lookup against removal. For general description of the patchset, please read description of the last take[L]. This patchset is against... v2.6.26 (bce7f793daec3e65ec5c5705d2457b81fe7b5725) + [1] RCU-implement-rcu_read_[un]lock_preempt + [2] block-fix-block_class-iteration-locking + [3] block-allow-deleting-zero-lenght-partition + [4] block-update-add_partition-error-handling and available in the following git tree. http://git.kernel.org/?p=linux/kernel/git/tj/misc.git;a=shortlog;h=block-extended-devt git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git block-extended-devt and the combined diffstat follows. block/blk-core.c | 53 ++- block/blk-merge.c | 9 block/genhd.c | 528 ++++++++++++++++++++++++++++++------ block/ioctl.c | 38 +- drivers/block/aoe/aoecmd.c | 6 drivers/block/pktcdvd.c | 2 drivers/block/ps3disk.c | 2 drivers/char/random.c | 6 drivers/ide/ide-disk.c | 17 - drivers/md/dm-ioctl.c | 4 drivers/md/dm-stripe.c | 4 drivers/md/dm.c | 13 drivers/md/linear.c | 2 drivers/md/multipath.c | 2 drivers/md/raid0.c | 2 drivers/md/raid1.c | 2 drivers/md/raid10.c | 2 drivers/md/raid5.c | 2 drivers/memstick/core/mspro_block.c | 2 drivers/mmc/card/block.c | 2 drivers/s390/block/dasd_proc.c | 3 drivers/s390/block/dcssblk.c | 4 drivers/scsi/sd.c | 15 - drivers/scsi/sr.c | 2 fs/block_dev.c | 23 - fs/partitions/check.c | 110 ++++--- include/linux/fs.h | 1 include/linux/genhd.h | 171 ++++++----- include/linux/major.h | 2 lib/Kconfig.debug | 16 + 30 files changed, 777 insertions(+), 268 deletions(-) Thanks. -- tejun [L] http://thread.gmane.org/gmane.linux.kernel/701825 [1] http://article.gmane.org/gmane.linux.kernel/706149 [2] http://article.gmane.org/gmane.linux.kernel/706152 [3] http://article.gmane.org/gmane.linux.kernel/706153 [4] http://article.gmane.org/gmane.linux.kernel/706154 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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