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r: 9590
b: refs/heads/master
c: 98ed72d
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Jeff Garzik committed Sep 24, 2005
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: dbaa9a9d2b37d838125fb7f2b9fdc5dc5fa4eaa9
refs/heads/master: 98ed72deebfd2b55b7e1bb94c8175b1169999212
26 changes: 14 additions & 12 deletions trunk/CREDITS
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Expand Up @@ -2211,6 +2211,15 @@ D: OV511 driver
S: (address available on request)
S: USA

N: Ian McDonald
E: iam4@cs.waikato.ac.nz
E: imcdnzl@gmail.com
W: http://wand.net.nz/~iam4
W: http://imcdnzl.blogspot.com
D: DCCP, CCID3
S: Hamilton
S: New Zealand

N: Patrick McHardy
E: kaber@trash.net
P: 1024D/12155E80 B128 7DE6 FF0A C2B2 48BE AB4C C9D4 964E 1215 5E80
Expand Down Expand Up @@ -2246,19 +2255,12 @@ S: D-90453 Nuernberg
S: Germany

N: Arnaldo Carvalho de Melo
E: acme@conectiva.com.br
E: acme@kernel.org
E: acme@gnu.org
W: http://bazar2.conectiva.com.br/~acme
W: http://advogato.org/person/acme
E: acme@mandriva.com
E: acme@ghostprotocols.net
W: http://oops.ghostprotocols.net:81/blog/
P: 1024D/9224DF01 D5DF E3BB E3C8 BCBB F8AD 841A B6AB 4681 9224 DF01
D: wanrouter hacking
D: misc Makefile, Config.in, drivers and network stacks fixes
D: IPX & LLC network stacks maintainer
D: Cyclom 2X synchronous card driver
D: wl3501 PCMCIA wireless card driver
D: i18n for minicom, net-tools, util-linux, fetchmail, etc
S: Conectiva S.A.
D: IPX, LLC, DCCP, cyc2x, wl3501_cs, net/ hacks
S: Mandriva
S: R. Tocantins, 89 - Cristo Rei
S: 80050-430 - Curitiba - Paran�
S: Brazil
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21 changes: 20 additions & 1 deletion trunk/Documentation/CodingStyle
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Expand Up @@ -410,7 +410,26 @@ Kernel messages do not have to be terminated with a period.
Printing numbers in parentheses (%d) adds no value and should be avoided.


Chapter 13: References
Chapter 13: Allocating memory

The kernel provides the following general purpose memory allocators:
kmalloc(), kzalloc(), kcalloc(), and vmalloc(). Please refer to the API
documentation for further information about them.

The preferred form for passing a size of a struct is the following:

p = kmalloc(sizeof(*p), ...);

The alternative form where struct name is spelled out hurts readability and
introduces an opportunity for a bug when the pointer variable type is changed
but the corresponding sizeof that is passed to a memory allocator is not.

Casting the return value which is a void pointer is redundant. The conversion
from void pointer to any other pointer type is guaranteed by the C programming
language.


Chapter 14: References

The C Programming Language, Second Edition
by Brian W. Kernighan and Dennis M. Ritchie.
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2 changes: 1 addition & 1 deletion trunk/Documentation/DocBook/kernel-hacking.tmpl
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Expand Up @@ -1105,7 +1105,7 @@ static struct block_device_operations opt_fops = {
</listitem>
<listitem>
<para>
Function names as strings (__func__).
Function names as strings (__FUNCTION__).
</para>
</listitem>
<listitem>
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4 changes: 3 additions & 1 deletion trunk/Documentation/cciss.txt
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Expand Up @@ -17,7 +17,9 @@ This driver is known to work with the following cards:
* SA P600
* SA P800
* SA E400
* SA E300
* SA P400i
* SA E200
* SA E200i

If nodes are not already created in the /dev/cciss directory, run as root:

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18 changes: 13 additions & 5 deletions trunk/Documentation/dell_rbu.txt
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Expand Up @@ -13,6 +13,8 @@ the BIOS on Dell servers (starting from servers sold since 1999), desktops
and notebooks (starting from those sold in 2005).
Please go to http://support.dell.com register and you can find info on
OpenManage and Dell Update packages (DUP).
Libsmbios can also be used to update BIOS on Dell systems go to
http://linux.dell.com/libsmbios/ for details.

Dell_RBU driver supports BIOS update using the monilothic image and packetized
image methods. In case of moniolithic the driver allocates a contiguous chunk
Expand All @@ -22,8 +24,8 @@ would place each packet in contiguous physical memory. The driver also
maintains a link list of packets for reading them back.
If the dell_rbu driver is unloaded all the allocated memory is freed.

The rbu driver needs to have an application which will inform the BIOS to
enable the update in the next system reboot.
The rbu driver needs to have an application (as mentioned above)which will
inform the BIOS to enable the update in the next system reboot.

The user should not unload the rbu driver after downloading the BIOS image
or updating.
Expand All @@ -42,9 +44,11 @@ In case of packet mechanism the single memory can be broken in smaller chuks
of contiguous memory and the BIOS image is scattered in these packets.

By default the driver uses monolithic memory for the update type. This can be
changed to contiguous during the driver load time by specifying the load
changed to packets during the driver load time by specifying the load
parameter image_type=packet. This can also be changed later as below
echo packet > /sys/devices/platform/dell_rbu/image_type
Also echoing either mono ,packet or init in to image_type will free up the
memory allocated by the driver.

Do the steps below to download the BIOS image.
1) echo 1 > /sys/class/firmware/dell_rbu/loading
Expand All @@ -53,9 +57,13 @@ Do the steps below to download the BIOS image.

The /sys/class/firmware/dell_rbu/ entries will remain till the following is
done.
echo -1 > /sys/class/firmware/dell_rbu/loading

echo -1 > /sys/class/firmware/dell_rbu/loading.
Until this step is completed the drivr cannot be unloaded.
If an user by accident executes steps 1 and 3 above without executing step 2;
it will make the /sys/class/firmware/dell_rbu/ entries to disappear.
The entries can be recreated by doing the following
echo init > /sys/devices/platform/dell_rbu/image_type
NOTE: echoing init in image_type does not change it original value.

Also the driver provides /sys/devices/platform/dell_rbu/data readonly file to
read back the image downloaded. This is useful in case of packet update
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73 changes: 73 additions & 0 deletions trunk/Documentation/device-mapper/snapshot.txt
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@@ -0,0 +1,73 @@
Device-mapper snapshot support
==============================

Device-mapper allows you, without massive data copying:

*) To create snapshots of any block device i.e. mountable, saved states of
the block device which are also writable without interfering with the
original content;
*) To create device "forks", i.e. multiple different versions of the
same data stream.


In both cases, dm copies only the chunks of data that get changed and
uses a separate copy-on-write (COW) block device for storage.


There are two dm targets available: snapshot and snapshot-origin.

*) snapshot-origin <origin>

which will normally have one or more snapshots based on it.
You must create the snapshot-origin device before you can create snapshots.
Reads will be mapped directly to the backing device. For each write, the
original data will be saved in the <COW device> of each snapshot to keep
its visible content unchanged, at least until the <COW device> fills up.


*) snapshot <origin> <COW device> <persistent?> <chunksize>

A snapshot is created of the <origin> block device. Changed chunks of
<chunksize> sectors will be stored on the <COW device>. Writes will
only go to the <COW device>. Reads will come from the <COW device> or
from <origin> for unchanged data. <COW device> will often be
smaller than the origin and if it fills up the snapshot will become
useless and be disabled, returning errors. So it is important to monitor
the amount of free space and expand the <COW device> before it fills up.

<persistent?> is P (Persistent) or N (Not persistent - will not survive
after reboot).


How this is used by LVM2
========================
When you create the first LVM2 snapshot of a volume, four dm devices are used:

1) a device containing the original mapping table of the source volume;
2) a device used as the <COW device>;
3) a "snapshot" device, combining #1 and #2, which is the visible snapshot
volume;
4) the "original" volume (which uses the device number used by the original
source volume), whose table is replaced by a "snapshot-origin" mapping
from device #1.

A fixed naming scheme is used, so with the following commands:

lvcreate -L 1G -n base volumeGroup
lvcreate -L 100M --snapshot -n snap volumeGroup/base

we'll have this situation (with volumes in above order):

# dmsetup table|grep volumeGroup

volumeGroup-base-real: 0 2097152 linear 8:19 384
volumeGroup-snap-cow: 0 204800 linear 8:19 2097536
volumeGroup-snap: 0 2097152 snapshot 254:11 254:12 P 16
volumeGroup-base: 0 2097152 snapshot-origin 254:11

# ls -lL /dev/mapper/volumeGroup-*
brw------- 1 root root 254, 11 29 ago 18:15 /dev/mapper/volumeGroup-base-real
brw------- 1 root root 254, 12 29 ago 18:15 /dev/mapper/volumeGroup-snap-cow
brw------- 1 root root 254, 13 29 ago 18:15 /dev/mapper/volumeGroup-snap
brw------- 1 root root 254, 10 29 ago 18:14 /dev/mapper/volumeGroup-base

1 change: 1 addition & 0 deletions trunk/Documentation/dontdiff
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Expand Up @@ -55,6 +55,7 @@ aic7*seq.h*
aicasm
aicdb.h*
asm
asm-offsets.*
asm_offsets.*
autoconf.h*
bbootsect
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9 changes: 0 additions & 9 deletions trunk/Documentation/feature-removal-schedule.txt
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Expand Up @@ -17,15 +17,6 @@ Who: Greg Kroah-Hartman <greg@kroah.com>

---------------------------

What: io_remap_page_range() (macro or function)
When: September 2005
Why: Replaced by io_remap_pfn_range() which allows more memory space
addressabilty (by using a pfn) and supports sparc & sparc64
iospace as part of the pfn.
Who: Randy Dunlap <rddunlap@osdl.org>

---------------------------

What: RAW driver (CONFIG_RAW_DRIVER)
When: December 2005
Why: declared obsolete since kernel 2.6.3
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2 changes: 1 addition & 1 deletion trunk/Documentation/filesystems/relayfs.txt
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Expand Up @@ -15,7 +15,7 @@ retrieve the data as it becomes available.

The format of the data logged into the channel buffers is completely
up to the relayfs client; relayfs does however provide hooks which
allow clients to impose some stucture on the buffer data. Nor does
allow clients to impose some structure on the buffer data. Nor does
relayfs implement any form of data filtering - this also is left to
the client. The purpose is to keep relayfs as simple as possible.

Expand Down
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