user/sven/linux.git/drivers/md/linear.c, branch ipvs/droutbytes

Merge branch 'for-linus' of git://neil.brown.name/md

2008-07-21T17:29:12Z

* 'for-linus' of git://neil.brown.name/md: (52 commits) md: Protect access to mddev->disks list using RCU md: only count actual openers as access which prevent a 'stop' md: linear: Make array_size sector-based and rename it to array_sectors. md: Make mddev->array_size sector-based. md: Make super_type->rdev_size_change() take sector-based sizes. md: Fix check for overlapping devices. md: Tidy up rdev_size_store a bit: md: Remove some unused macros. md: Turn rdev->sb_offset into a sector-based quantity. md: Make calc_dev_sboffset() return a sector count. md: Replace calc_dev_size() by calc_num_sectors(). md: Make update_size() take the number of sectors. md: Better control of when do_md_stop is allowed to stop the array. md: get_disk_info(): Don't convert between signed and unsigned and back. md: Simplify restart_array(). md: alloc_disk_sb(): Return proper error value. md: Simplify sb_equal(). md: Simplify uuid_equal(). md: sb_equal(): Fix misleading printk. md: Fix a typo in the comment to cmd_match(). ...

md: linear: Make array_size sector-based and rename it to array_sectors.

2008-07-21T07:05:25Z

Signed-off-by: Andre Noll Signed-off-by: NeilBrown

md: Make mddev->array_size sector-based.

2008-07-21T07:05:22Z

This patch renames the array_size field of struct mddev_s to array_sectors and converts all instances to use units of 512 byte sectors instead of 1k blocks. Signed-off-by: Andre Noll Signed-off-by: NeilBrown

Add bvec_merge_data to handle stacked devices and ->merge_bvec()

2008-07-03T11:21:15Z

When devices are stacked, one device's merge_bvec_fn may need to perform the mapping and then call one or more functions for its underlying devices. The following bio fields are used: bio->bi_sector bio->bi_bdev bio->bi_size bio->bi_rw using bio_data_dir() This patch creates a new struct bvec_merge_data holding a copy of those fields to avoid having to change them directly in the struct bio when going down the stack only to have to change them back again on the way back up. (And then when the bio gets mapped for real, the whole exercise gets repeated, but that's a problem for another day...) Signed-off-by: Alasdair G Kergon Cc: Neil Brown Cc: Milan Broz Signed-off-by: Jens Axboe

linear: correct disk numbering error check

2008-06-27T22:31:19Z

From: "Nikanth Karthikesan" Correct disk numbering problem check. Signed-off-by: Nikanth Karthikesan Signed-off-by: Neil Brown

Remove blkdev warning triggered by using md

2008-05-15T02:11:15Z

As setting and clearing queue flags now requires that we hold a spinlock on the queue, and as blk_queue_stack_limits is called without that lock, get the lock inside blk_queue_stack_limits. For blk_queue_stack_limits to be able to find the right lock, each md personality needs to set q->queue_lock to point to the appropriate lock. Those personalities which didn't previously use a spin_lock, us q->__queue_lock. So always initialise that lock when allocated. With this in place, setting/clearing of the QUEUE_FLAG_PLUGGED bit will no longer cause warnings as it will be clear that the proper lock is held. Thanks to Dan Williams for review and fixing the silly bugs. Signed-off-by: NeilBrown Cc: Dan Williams Cc: Jens Axboe Cc: Alistair John Strachan Cc: Nick Piggin Cc: "Rafael J. Wysocki" Cc: Jacek Luczak Cc: Prakash Punnoor Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

md: change ITERATE_RDEV to rdev_for_each

2008-02-06T18:41:19Z

As this is more in line with common practice in the kernel. Also swap the args around to be more like list_for_each. Signed-off-by: Neil Brown Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Add UNPLUG traces to all appropriate places

2007-11-09T12:41:32Z

Added blk_unplug interface, allowing all invocations of unplugs to result in a generated blktrace UNPLUG. Signed-off-by: Alan D. Brunelle Signed-off-by: Jens Axboe

block: convert blkdev_issue_flush() to use empty barriers

2007-10-16T09:05:02Z

Then we can get rid of ->issue_flush_fn() and all the driver private implementations of that. Signed-off-by: Jens Axboe

Drop 'size' argument from bio_endio and bi_end_io

2007-10-10T07:25:57Z

As bi_end_io is only called once when the reqeust is complete, the 'size' argument is now redundant. Remove it. Now there is no need for bio_endio to subtract the size completed from bi_size. So don't do that either. While we are at it, change bi_end_io to return void. Signed-off-by: Neil Brown Signed-off-by: Jens Axboe