linux-stable.git/include/linux/blkdev.h, branch linux-2.6.14.y

[PATCH] include/linux/blkdev.h: "extern inline" -> "static inline"

2005-09-10T17:06:34+00:00

"extern inline" doesn't make much sense.

Signed-off-by: Adrian Bunk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

fix mismerge in ll_rw_blk.c

2005-08-28T15:43:07+00:00

[PATCH] blk: fix tag shrinking (revive real_max_size)

2005-08-05T20:43:16+00:00

My patch in commit fa72b903f75e4f0f0b2c2feed093005167da4023 incorrectly
removed blk_queue_tag->real_max_depth.

The original resize implementation was incorrect in the following
points.

 * actual allocation size of tag_index was shorter than real_max_size,
   but assumed to be of the same size, possibly causing memory access
   beyond the allocated area.
 * bits in tag_map between max_deptn and real_max_depth were
   initialized to 1's, making the tags permanently reserved.

In an attempt to fix above two bugs, I had removed allocation optimization
in init_tag_map and real_max_size.  Tag map/index were allocated and freed
immediately during resize.

Unfortunately, I wasn't considering that tag map/index can be resized
dynamically with tags beyond new_depth active.  This led to accessing
freed area after shrinking tags and led to the following bug reporting
thread on linux-scsi.

   http://marc.theaimsgroup.com/?l=linux-scsi&m=112319898111885&w=2

To fix the problem, I've revived real_max_depth without allocation
optimization in init_tag_map, and Andrew Vasquez confirmed that the
problem was fixed.  As Jens is not going to be available for a week, he
asked me to make sure that this patch reaches you.

   http://marc.theaimsgroup.com/?l=linux-scsi&m=112325778530886&w=2

Also, a comment was added to make sure that real_max_size is needed for
dynamic shrinking.

Signed-off-by: Tejun Heo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] blk: light iocontext ops

2005-06-29T04:20:35+00:00

get_io_context needlessly turned off interrupts and checked for racing io
context creations.  Both of which aren't needed, because the io context can
only be created while in process context of the current process.

Also, split the function in 2.  A light version, current_io_context does not
elevate the reference count specifically, but can be used when in process
context, because the process holds a reference itself.

Signed-off-by: Nick Piggin 
Cc: Jens Axboe 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] Update cfq io scheduler to time sliced design

2005-06-27T21:33:29+00:00

This updates the CFQ io scheduler to the new time sliced design (cfq
v3).  It provides full process fairness, while giving excellent
aggregate system throughput even for many competing processes.  It
supports io priorities, either inherited from the cpu nice value or set
directly with the ioprio_get/set syscalls.  The latter closely mimic
set/getpriority.

This import is based on my latest from -mm.

Signed-off-by: Jens Axboe 
Signed-off-by: Linus Torvalds

[PATCH] drivers/block/ll_rw_blk.c: cleanups

2005-06-25T23:25:05+00:00

This patch contains the following cleanups:
- make needlessly global code static
- remove the following unused global functions:
  - blkdev_scsi_issue_flush_fn
  - __blk_attempt_remerge
- remove the following unused EXPORT_SYMBOL's:
  - blk_phys_contig_segment
  - blk_hw_contig_segment
  - blkdev_scsi_issue_flush_fn
  - __blk_attempt_remerge

Signed-off-by: Adrian Bunk 
Acked-by: Jens Axboe 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] blk: remove BLK_TAGS_{PER_LONG|MASK}

2005-06-23T16:45:15+00:00

Replace BLK_TAGS_PER_LONG with BITS_PER_LONG and remove unused BLK_TAGS_MASK.

Signed-off-by: Tejun Heo 
Acked-by: Jens Axboe 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] blk: remove blk_queue_tag->real_max_depth optimization

2005-06-23T16:45:15+00:00

blk_queue_tag->real_max_depth was used to optimize out unnecessary
allocations/frees on tag resize.  However, the whole thing was very broken -
tag_map was never allocated to real_max_depth resulting in access beyond the
end of the map, bits in [max_depth..real_max_depth] were set when initializing
a map and copied when resizing resulting in pre-occupied tags.

As the gain of the optimization is very small, well, almost nill, remove the
whole thing.

Signed-off-by: Tejun Heo 
Acked-by: Jens Axboe 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] NUMA aware block device control structure allocation

2005-06-23T16:45:09+00:00

Patch to allocate the control structures for for ide devices on the node of
the device itself (for NUMA systems).  The patch depends on the Slab API
change patch by Manfred and me (in mm) and the pcidev_to_node patch that I
posted today.

Does some realignment too.

Signed-off-by: Justin M. Forbes 
Signed-off-by: Christoph Lameter 
Signed-off-by: Pravin Shelar 
Signed-off-by: Shobhit Dayal 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] update blk_execute_rq to take an at_head parameter

2005-06-20T12:11:09+00:00

Original From: Mike Christie 

Modified to split out block changes (this patch) and SCSI pieces.

Signed-off-by: Jens Axboe 
Signed-off-by: James Bottomley