linux.git/drivers/md/dm-snap.c, branch v2.6.24

dm: use is_power_of_2

2007-10-20T01:01:06+00:00

Replacing n & (n - 1) for power of 2 check by is_power_of_2(n)

Signed-off-by: vignesh babu 
Signed-off-by: Alasdair G Kergon

Drop 'size' argument from bio_endio and bi_end_io

2007-10-10T07:25:57+00:00

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

dm: disable barriers

2007-07-12T22:01:08+00:00

This patch causes device-mapper to reject any barrier requests.  This is done
since most of the targets won't handle this correctly anyway.  So until the
situation improves it is better to reject these requests at the first place.
Since barrier requests won't get to the targets, the checks there can be
removed.

Cc: stable@kernel.org
Signed-off-by: Stefan Bader 
Signed-off-by: Alasdair G Kergon 
Signed-off-by: Linus Torvalds

dm snapshot: permit invalid activation

2007-07-12T22:01:08+00:00

Allow invalid snapshots to be activated instead of failing.

This allows userspace to reinstate any given snapshot state - for
example after an unscheduled reboot - and clean up the invalid snapshot
at its leisure.

Cc: stable@kernel.org
Signed-off-by: Milan Broz 
Signed-off-by: Alasdair G Kergon 
Signed-off-by: Linus Torvalds

dm: use kmem_cache macro

2007-07-12T22:01:08+00:00

Use new KMEM_CACHE() macro and make the newly-exposed structure names more
meaningful.  Also remove some superfluous casts and inlines (let a modern
compiler be the judge).

Acked-by: Christoph Lameter 
Signed-off-by: Alasdair G Kergon 
Signed-off-by: Linus Torvalds

[PATCH] make drivers/md/dm-snap.c:ksnapd static

2006-12-08T16:29:09+00:00

Signed-off-by: Adrian Bunk 
Acked-by: Alasdair G Kergon 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] dm: snapshot: abstract memory release

2006-12-08T16:29:09+00:00

Move the code that releases memory used by a snapshot into a separate function.

Signed-off-by: Milan Broz 
Signed-off-by: Alasdair G Kergon 
Cc: dm-devel@redhat.com
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] dm: map and endio symbolic return codes

2006-12-08T16:29:09+00:00

Update existing targets to use the new symbols for return values from target
map and end_io functions.

There is no effect on behaviour.

Test results:
Done build test without errors.

Signed-off-by: Kiyoshi Ueda 
Signed-off-by: Jun'ichi Nomura 
Signed-off-by: Alasdair G Kergon 
Cc: dm-devel@redhat.com
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[PATCH] slab: remove kmem_cache_t

2006-12-07T16:39:25+00:00

Replace all uses of kmem_cache_t with struct kmem_cache.

The patch was generated using the following script:

	#!/bin/sh
	#
	# Replace one string by another in all the kernel sources.
	#

	set -e

	for file in `find * -name "*.c" -o -name "*.h"|xargs grep -l $1`; do
		quilt add $file
		sed -e "1,\$s/$1/$2/g" $file >/tmp/$$
		mv /tmp/$$ $file
		quilt refresh
	done

The script was run like this

	sh replace kmem_cache_t "struct kmem_cache"

Signed-off-by: Christoph Lameter 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

WorkStruct: make allyesconfig

2006-11-22T14:57:56+00:00

Fix up for make allyesconfig.

Signed-Off-By: David Howells