linux/block, branch v2.6.19

[PATCH] scsi: clear garbage after CDBs on SG_IO

2006-11-16T19:43:38Z

ATAPI devices transfer fixed number of bytes for CDBs (12 or 16). Some ATAPI devices choke when shorter CDB is used and the left bytes contain garbage. Block SG_IO cleared left bytes but SCSI SG_IO didn't. This patch makes SCSI SG_IO clear it and simplify CDB clearing in block SG_IO. Signed-off-by: Tejun Heo Cc: Mathieu Fluhr Cc: James Bottomley Cc: Douglas Gilbert Acked-by: Jens Axboe Cc: Acked-by: Jeff Garzik Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] Fix bad data direction in SG_IO

2006-11-13T17:47:00Z

Contrary to what the name misleads you to believe, SG_DXFER_TO_FROM_DEV is really just a normal read seen from the device side. This patch fixes http://lkml.org/lkml/2006/10/13/100 Signed-off-by: Jens Axboe Signed-off-by: Linus Torvalds

[PATCH] tidy "md: check bio address after mapping through partitions"

2006-11-03T20:27:55Z

Neil's xterms are too wide. Cc: Neil Brown Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] CFQ: request <-> request merging rr_list fixup

2006-10-31T16:12:45Z

In very rare circumstances would we be pruning a merged request and at the same time delete the implicated cfqq from the rr_list, and not readd it when the merged request got added. This could cause io stalls until that process issued io again. Fix it up by putting the rr_list add handling into cfq_add_rq_rb(), identical to how pruning is handled in cfq_del_rq_rb(). This fixes a hang reproducible with fsx-linux. Signed-off-by: Jens Axboe Signed-off-by: Linus Torvalds

[PATCH] md: check bio address after mapping through partitions.

2006-10-31T16:07:01Z

Partitions are not limited to live within a device. So we should range check after partition mapping. Note that 'maxsector' was being used for two different things. I have split off the second usage into 'old_sector' so that maxsector can be still be used for it's primary usage later in the function. Cc: Jens Axboe Signed-off-by: Neil Brown Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] CFQ: bad locking in changed_ioprio()

2006-10-30T19:01:50Z

When the ioprio code recently got juggled a bit, a bug was introduced. changed_ioprio() is no longer called with interrupts disabled, so using plain spin_lock() on the queue_lock is a bug. Signed-off-by: Jens Axboe Signed-off-by: Linus Torvalds

[PATCH] CFQ: use irq safe locking in cfq_cic_link()

2006-10-30T18:21:58Z

If cfq_set_request() is called for a new process AND a non-fs io request (so that __GFP_WAIT may not be set), cfq_cic_link() may use spin_lock_irq() and spin_unlock_irq() with interrupts already disabled. Fix is to always use irq safe locking in cfq_cic_link() Acked-By: Arjan van de Ven Acked-by: Ingo Molnar Signed-off-by: Jens Axboe Signed-off-by: Linus Torvalds

[PATCH] separate bdi congestion functions from queue congestion functions

2006-10-20T17:26:35Z

Separate out the concept of "queue congestion" from "backing-dev congestion". Congestion is a backing-dev concept, not a queue concept. The blk_* congestion functions are retained, as wrappers around the core backing-dev congestion functions. This proper layering is needed so that NFS can cleanly use the congestion functions, and so that CONFIG_BLOCK=n actually links. Cc: "Thomas Maier" Cc: "Jens Axboe" Cc: Trond Myklebust Cc: David Howells Cc: Peter Osterlund Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] export clear_queue_congested and set_queue_congested

2006-10-20T17:26:35Z

Export the clear_queue_congested() and set_queue_congested() functions located in ll_rw_blk.c The functions are renamed to blk_clear_queue_congested() and blk_set_queue_congested(). (needed in the pktcdvd driver's bio write congestion control) Signed-off-by: Thomas Maier Cc: Peter Osterlund Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] block layer: elv_iosched_show should get elv_list_lock

2006-10-12T13:08:51Z

elv_iosched_show function iterates other elv_list, hence elv_list_lock should be got. Signed-off-by: Vasily Tarasov Signed-off-by: Vasily Tarasov