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Document that the io_context patch isn't needed anymore

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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1564 d57e44dd-8a1f-0410-8b47-8ef2f437770f
This commit is contained in:
Vladislav Bolkhovitin
2010-03-25 19:47:28 +00:00
parent 08e7c3fba6
commit 168f4c3335
3 changed files with 10 additions and 18 deletions
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1
fcst/README
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@@ -31,7 +31,6 @@ To build for linux-2.6.33-rc8, do:
3. Apply SCST patches to the kernel
See trunk/scst/README
The readahead patches are not needed in 2.6.33.
The io_context patch needs to be adjusted for 2.6.33. Skip it for now.
4. Configure and make your kernel

19
scst/README
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@@ -76,19 +76,12 @@ kernels don't have the required functionality (scsi_execute_async())
anymore. So, on them to have pass-through working you have to apply
scst_exec_req_fifo-2.6.X.patch.
2. io_context-2.6.X.patch. This patch exports some IO context management
functions from the kernel. For performance reasons SCST queues commands
using a pool of IO threads. It is considerably better for performance
(>30% increase on sequential reads) if threads in a pool have the same
IO context. This patch allows that. If you don't apply this patch, you
will loose this performance benefit.
3. readahead-2.6.X.patch. This patch fixes problem in Linux readahead
2. readahead-2.6.X.patch. This patch fixes problem in Linux readahead
subsystem and greatly improves performance for software RAIDs. See
http://sourceforge.net/mailarchive/forum.php?thread_name=a0272b440906030714g67eabc5k8f847fb1e538cc62%40mail.gmail.com&forum_name=scst-devel
thread for more details. It is included in the mainstream kernel 2.6.33.
4. readahead-context-2.6.X.patch. This is backported from 2.6.31 version
3. readahead-context-2.6.X.patch. This is backported from 2.6.31 version
of the context readahead patch http://lkml.org/lkml/2009/4/12/9, big
thanks to Wu Fengguang. This is a performance improvement patch. It is
included in the mainstream kernel 2.6.31.
@@ -1486,10 +1479,10 @@ access to your target from different VMs.
5. For other target and initiator software parts:
- Make sure you applied on your kernel all available SCST patches,
especially io_context-2.6.X.patch. If for your kernel version this
patch doesn't exist, it is strongly recommended to upgrade your
kernel to version, for which this patch exists.
- Make sure you applied on your kernel all available SCST patches.
If for your kernel version this patch doesn't exist, it is strongly
recommended to upgrade your kernel to version, for which this patch
exists.
- Don't enable debug/hacking features in the kernel, i.e. use them as
they are by default.

8
scst/README_in-tree
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@@ -1410,10 +1410,10 @@ access to your target from different VMs.
5. For other target and initiator software parts:
- Make sure you applied on your kernel all available SCST patches,
especially io_context-2.6.X.patch. If for your kernel version this
patch doesn't exist, it is strongly recommended to upgrade your
kernel to version, for which this patch exists.
- Make sure you applied on your kernel all available SCST patches.
If for your kernel version this patch doesn't exist, it is strongly
recommended to upgrade your kernel to version, for which this patch
exists.
- Don't enable debug/hacking features in the kernel, i.e. use them as
they are by default.