Subrata Modak wrote:
Nadia Derbey wrote:
Matt Helsley wrote:
On Tue, 2008-02-19 at 18:16 +0100, Nadia Derbey wrote:
+#define MAX_MSGQUEUES 16 /* MSGMNI as defined in linux/msg.h */
+
It's not quite the maximum anymore, is it? More like the minumum
maximum ;). A better name
Nadia Derbey wrote:
Matt Helsley wrote:
On Tue, 2008-02-19 at 18:16 +0100, Nadia Derbey wrote:
+#define MAX_MSGQUEUES 16 /* MSGMNI as defined in linux/msg.h */
+
It's not quite the maximum anymore, is it? More like the minumum
maximum ;). A better name might better document what
Matt Helsley wrote:
On Tue, 2008-02-19 at 18:16 +0100, Nadia Derbey wrote:
+#define MAX_MSGQUEUES 16 /* MSGMNI as defined in linux/msg.h */
+
It's not quite the maximum anymore, is it? More like the minumum
maximum ;). A better name might better document what the test is
actually
Matt Helsley wrote:
On Tue, 2008-02-19 at 18:16 +0100, Nadia Derbey wrote:
+#define MAX_MSGQUEUES 16 /* MSGMNI as defined in linux/msg.h */
+
It's not quite the maximum anymore, is it? More like the minumum
maximum ;). A better name might better document what the test is
actually
Matt Helsley wrote:
On Tue, 2008-02-19 at 18:16 +0100, Nadia Derbey wrote:
snip
+#define MAX_MSGQUEUES 16 /* MSGMNI as defined in linux/msg.h */
+
It's not quite the maximum anymore, is it? More like the minumum
maximum ;). A better name might better document what the test
Matt Helsley wrote:
On Tue, 2008-02-19 at 18:16 +0100, Nadia Derbey wrote:
snip
+#define MAX_MSGQUEUES 16 /* MSGMNI as defined in linux/msg.h */
+
It's not quite the maximum anymore, is it? More like the minumum
maximum ;). A better name might better document what the test
Nadia Derbey wrote:
Matt Helsley wrote:
On Tue, 2008-02-19 at 18:16 +0100, Nadia Derbey wrote:
snip
+#define MAX_MSGQUEUES 16 /* MSGMNI as defined in linux/msg.h */
+
It's not quite the maximum anymore, is it? More like the minumum
maximum ;). A better name might better document
Subrata Modak wrote:
Nadia Derbey wrote:
Matt Helsley wrote:
On Tue, 2008-02-19 at 18:16 +0100, Nadia Derbey wrote:
snip
+#define MAX_MSGQUEUES 16 /* MSGMNI as defined in linux/msg.h */
+
It's not quite the maximum anymore, is it? More like the minumum
maximum ;). A better name
Subrata Modak wrote:
Nadia Derbey wrote:
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:47 +0100 [EMAIL PROTECTED] wrote:
[PATCH 01/08]
This patch computes msg_ctlmni to make it scale with the amount of
lowmem.
msg_ctlmni is now set to make the message queues occupy 1/32
Subrata Modak wrote:
Nadia Derbey wrote:
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:47 +0100 [EMAIL PROTECTED] wrote:
[PATCH 01/08]
This patch computes msg_ctlmni to make it scale with the amount of
lowmem.
msg_ctlmni is now set to make the message queues occupy 1/32
Nadia Derbey wrote:
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:47 +0100 [EMAIL PROTECTED] wrote:
[PATCH 01/08]
This patch computes msg_ctlmni to make it scale with the amount of
lowmem.
msg_ctlmni is now set to make the message queues occupy 1/32 of the
available
lowmem.
Some
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:47 +0100 [EMAIL PROTECTED] wrote:
[PATCH 01/08]
This patch computes msg_ctlmni to make it scale with the amount of lowmem.
msg_ctlmni is now set to make the message queues occupy 1/32 of the available
lowmem.
Some cleaning has also been done
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:47 +0100 [EMAIL PROTECTED] wrote:
[PATCH 01/08]
This patch computes msg_ctlmni to make it scale with the amount of lowmem.
msg_ctlmni is now set to make the message queues occupy 1/32 of the available
lowmem.
Some cleaning has also been done
Nadia Derbey wrote:
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:47 +0100 [EMAIL PROTECTED] wrote:
[PATCH 01/08]
This patch computes msg_ctlmni to make it scale with the amount of
lowmem.
msg_ctlmni is now set to make the message queues occupy 1/32 of the
available
lowmem.
Some
Andrew Morton wrote:
On Tue, 12 Feb 2008 16:15:00 +0100
Nadia Derbey <[EMAIL PROTECTED]> wrote:
Andrew Morton wrote:
On Tue, 12 Feb 2008 10:32:31 +0100 Nadia Derbey <[EMAIL PROTECTED]> wrote:
it builds fine, modulo some changes in ipv4 and ipv6 (see attached patch
-
Andrew Morton wrote:
On Tue, 12 Feb 2008 16:15:00 +0100
Nadia Derbey [EMAIL PROTECTED] wrote:
Andrew Morton wrote:
On Tue, 12 Feb 2008 10:32:31 +0100 Nadia Derbey [EMAIL PROTECTED] wrote:
it builds fine, modulo some changes in ipv4 and ipv6 (see attached patch
- didn't find
Andrew Morton wrote:
On Tue, 12 Feb 2008 10:32:31 +0100 Nadia Derbey <[EMAIL PROTECTED]> wrote:
it builds fine, modulo some changes in ipv4 and ipv6 (see attached patch
- didn't find it in the hot fixes).
OK, thanks for checking. Did you confirm that we don't have unneeded code
in v
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:54 +0100
[EMAIL PROTECTED] wrote:
[PATCH 08/08]
This patch is the enhancement as asked for by Yasunori: if msgmni is set to
a negative value, register it back into the ipcns notifier chain.
A new interface has been added to the notification
Nadia Derbey wrote:
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:53 +0100
[EMAIL PROTECTED] wrote:
[PATCH 07/08]
This patch makes msgmni not recomputed anymore upon ipc namespace
creation /
removal or memory add/remove, as soon as it has been set from userland.
As soon as msgmni
_PROC_FS=n
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/net/ip_fib.h | 13 -
include/net/ipv6.h |6 +++---
2 files changed, 15 insertions(+), 4 deletions(-)
Index: linux-2.6.24-mm1/include/net/ip_fib.h
-by: Nadia Derbey [EMAIL PROTECTED]
---
include/net/ip_fib.h | 13 -
include/net/ipv6.h |6 +++---
2 files changed, 15 insertions(+), 4 deletions(-)
Index: linux-2.6.24-mm1/include/net/ip_fib.h
===
--- linux-2.6.24-mm1
Nadia Derbey wrote:
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:53 +0100
[EMAIL PROTECTED] wrote:
[PATCH 07/08]
This patch makes msgmni not recomputed anymore upon ipc namespace
creation /
removal or memory add/remove, as soon as it has been set from userland.
As soon as msgmni
Andrew Morton wrote:
On Tue, 12 Feb 2008 10:32:31 +0100 Nadia Derbey [EMAIL PROTECTED] wrote:
it builds fine, modulo some changes in ipv4 and ipv6 (see attached patch
- didn't find it in the hot fixes).
OK, thanks for checking. Did you confirm that we don't have unneeded code
in vmlinux
Andrew Morton wrote:
On Mon, 11 Feb 2008 15:16:54 +0100
[EMAIL PROTECTED] wrote:
[PATCH 08/08]
This patch is the enhancement as asked for by Yasunori: if msgmni is set to
a negative value, register it back into the ipcns notifier chain.
A new interface has been added to the notification
registered. With that new interface we avoid taking care of the states changes
in procfs.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc_namespace.h |1
include/linux/notifier.h |4 +++
ipc/ipc_sysctl.c
notifier chain.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
ipc/ipc_sysctl.c | 43 +--
1 file changed, 41 insertions(+), 2 deletions(-)
Index: linux-2.6.24-mm1/ipc/ipc_sy
or an existing ipc namespace is
removed, the ipcns notifier chain is notified. The callback routine for each
registered ipc namespace is then activated in order to recompute msgmni for
that namespace.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc_namespace.h
.
Each callback routine registered in the ipcns namespace, in turn, recomputes
msgmni for the owning namespace.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc_namespace.h | 43 -
include/linux/memory.h|1
ipc/Ma
[PATCH 05/08]
This patch makes the memory hotplug chain's mutex held for a shorter time:
when memory is offlined or onlined a work item is added to the global
workqueue.
When the work item is run, it notifies the ipcns notifier chain with the
IPCNS_MEMCHANGED event.
Signed-off-by: Nadia Derbey
[PATCH 03/08]
This is a trivial patch that defines the priority of slab_memory_callback in
the callback chain as a constant.
This is to prepare for next patch in the series.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/memory.h |6 ++
mm/slub.c
Resending the set of patches after Yasunori's remark about being able to
turn on/off automatic recomputing.
(see message at http://lkml.org/lkml/2008/2/5/149).
I actually introduced an intermediate solution: when msgmni is set by hand,
it is uneregistered from the ipcns notifier chain (i.e.
[PATCH 02/08]
Since all the namespaces see the same amount of memory (the total one)
this patch introduces a new variable that counts the ipc namespaces and
divides msg_ctlmni by this counter.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc_namespace.h |1 +
ipc
it as a size in bytes (the code
expresses it in Kbytes).
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/msg.h | 14 --
ipc/msg.c | 37 -
2 files changed, 48 insertions(+), 3 deletions(-)
Index: linux-2.6.
notifier chain.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
ipc/ipc_sysctl.c | 43 +--
1 file changed, 41 insertions(+), 2 deletions(-)
Index: linux-2.6.24-mm1/ipc/ipc_sysctl.c
or an existing ipc namespace is
removed, the ipcns notifier chain is notified. The callback routine for each
registered ipc namespace is then activated in order to recompute msgmni for
that namespace.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc_namespace.h | 25
.
Each callback routine registered in the ipcns namespace, in turn, recomputes
msgmni for the owning namespace.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc_namespace.h | 43 -
include/linux/memory.h|1
ipc/Makefile
[PATCH 05/08]
This patch makes the memory hotplug chain's mutex held for a shorter time:
when memory is offlined or onlined a work item is added to the global
workqueue.
When the work item is run, it notifies the ipcns notifier chain with the
IPCNS_MEMCHANGED event.
Signed-off-by: Nadia Derbey
Resending the set of patches after Yasunori's remark about being able to
turn on/off automatic recomputing.
(see message at http://lkml.org/lkml/2008/2/5/149).
I actually introduced an intermediate solution: when msgmni is set by hand,
it is uneregistered from the ipcns notifier chain (i.e.
[PATCH 03/08]
This is a trivial patch that defines the priority of slab_memory_callback in
the callback chain as a constant.
This is to prepare for next patch in the series.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/memory.h |6 ++
mm/slub.c |2
registered. With that new interface we avoid taking care of the states changes
in procfs.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc_namespace.h |1
include/linux/notifier.h |4 +++
ipc/ipc_sysctl.c | 45
it as a size in bytes (the code
expresses it in Kbytes).
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/msg.h | 14 --
ipc/msg.c | 37 -
2 files changed, 48 insertions(+), 3 deletions(-)
Index: linux-2.6.24-mm1/include
[PATCH 02/08]
Since all the namespaces see the same amount of memory (the total one)
this patch introduces a new variable that counts the ipc namespaces and
divides msg_ctlmni by this counter.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc_namespace.h |1 +
ipc/msg.c
missing argument to pmd_free() calls.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
arch/x86/mm/pgtable_32.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
Index: linux-2.6.24-mm1/arch/x86/mm/pgtabl
missing argument to pmd_free() calls.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
arch/x86/mm/pgtable_32.c | 10 +-
1 file changed, 5 insertions(+), 5 deletions(-)
Index: linux-2.6.24-mm1/arch/x86/mm/pgtable_32.c
Yasunori Goto wrote:
Thanks Nadia-san.
I tested this patch set on my box. It works well.
I have only one comment.
---
ipc/ipc_sysctl.c | 43 +--
1 file changed, 41 insertions(+), 2 deletions(-)
Index: linux-2.6.24/ipc/ipc_sysctl.c
Yasunori Goto wrote:
Thanks Nadia-san.
I tested this patch set on my box. It works well.
I have only one comment.
---
ipc/ipc_sysctl.c | 43 +--
1 file changed, 41 insertions(+), 2 deletions(-)
Index: linux-2.6.24/ipc/ipc_sysctl.c
or an existing ipc namespace is
removed, the ipcns notifier chain is notified. The callback routine for each
registered ipc namespace is then activated in order to recompute msgmni for
that namespace.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc.h
notifier chain.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
ipc/ipc_sysctl.c | 43 +--
1 file changed, 41 insertions(+), 2 deletions(-)
Index: linux-2.6.24/ipc/ipc_sy
[PATCH 05/07]
This patche makes the memory hotplug chain's mutex held for a shorter time:
when memory is offlined or onlined a work item is added to the global
workqueue.
When the work item is run, it notifies the ipcns notifier chain with the
IPCNS_MEMCHANGED event.
Signed-off-by: Nadia Derbey
.
Each callback routine registered in the ipcns namespace, in turn, recomputes
msgmni for the owning namespace.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc.h| 38 ++
include/linux/memory.h |1
ipc/Makefile |3 +
[PATCH 02/07]
Since all the namespaces see the same amount of memory (the total one)
this patch introduces a new variable that counts the ipc namespaces and
divides msg_ctlmni by this counter.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc.h |1 +
ipc
[PATCH 03/07]
This is a trivial patch that defines the priority of slab_memory_callback in
the callback chain as a constant.
This is to prepare for next patch in the series.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/memory.h |6 ++
mm/slub.c
it as a size in bytes (the code
expresses it in Kbytes).
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/msg.h | 14 --
ipc/msg.c | 37 -
2 files changed, 48 insertions(+), 3 deletions(-)
Index: linux-2.6.24/i
Resending the set of patches after Yasunori's remark about having a single
callback on the hotplug memory notifier chain for the ipc subsystem.
(see thread at http://lkml.org/lkml/2008/1/14/196).
Cc'ing linux-mm since I'm adding a notifier block to the memory hotplug
notifier chain.
Also, Cc'ing
Pierre Peiffer wrote:
Nadia Derbey wrote:
[EMAIL PROTECTED] wrote:
From: Pierre Peiffer <[EMAIL PROTECTED]>
semctl_down() takes one unused parameter: semnum.
This patch proposes to get rid of it.
Signed-off-by: Pierre Peiffer <[EMAIL PROTECTED]>
Acked-by: Serge Hallyn <[
[EMAIL PROTECTED] wrote:
From: Pierre Peiffer <[EMAIL PROTECTED]>
semctl_down() takes one unused parameter: semnum.
This patch proposes to get rid of it.
Signed-off-by: Pierre Peiffer <[EMAIL PROTECTED]>
Acked-by: Serge Hallyn <[EMAIL PROTECTED]>
---
ipc/sem.c |6 +++---
1 file changed, 3
[EMAIL PROTECTED] wrote:
From: Pierre Peiffer [EMAIL PROTECTED]
semctl_down() takes one unused parameter: semnum.
This patch proposes to get rid of it.
Signed-off-by: Pierre Peiffer [EMAIL PROTECTED]
Acked-by: Serge Hallyn [EMAIL PROTECTED]
---
ipc/sem.c |6 +++---
1 file changed, 3
Pierre Peiffer wrote:
Nadia Derbey wrote:
[EMAIL PROTECTED] wrote:
From: Pierre Peiffer [EMAIL PROTECTED]
semctl_down() takes one unused parameter: semnum.
This patch proposes to get rid of it.
Signed-off-by: Pierre Peiffer [EMAIL PROTECTED]
Acked-by: Serge Hallyn [EMAIL PROTECTED
Resending the set of patches after Yasunori's remark about having a single
callback on the hotplug memory notifier chain for the ipc subsystem.
(see thread at http://lkml.org/lkml/2008/1/14/196).
Cc'ing linux-mm since I'm adding a notifier block to the memory hotplug
notifier chain.
Also, Cc'ing
it as a size in bytes (the code
expresses it in Kbytes).
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/msg.h | 14 --
ipc/msg.c | 37 -
2 files changed, 48 insertions(+), 3 deletions(-)
Index: linux-2.6.24/include
[PATCH 02/07]
Since all the namespaces see the same amount of memory (the total one)
this patch introduces a new variable that counts the ipc namespaces and
divides msg_ctlmni by this counter.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc.h |1 +
ipc/msg.c
[PATCH 03/07]
This is a trivial patch that defines the priority of slab_memory_callback in
the callback chain as a constant.
This is to prepare for next patch in the series.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/memory.h |6 ++
mm/slub.c |2
.
Each callback routine registered in the ipcns namespace, in turn, recomputes
msgmni for the owning namespace.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc.h| 38 ++
include/linux/memory.h |1
ipc/Makefile |3 +-
ipc
or an existing ipc namespace is
removed, the ipcns notifier chain is notified. The callback routine for each
registered ipc namespace is then activated in order to recompute msgmni for
that namespace.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc.h | 25
notifier chain.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
ipc/ipc_sysctl.c | 43 +--
1 file changed, 41 insertions(+), 2 deletions(-)
Index: linux-2.6.24/ipc/ipc_sysctl.c
[PATCH 05/07]
This patche makes the memory hotplug chain's mutex held for a shorter time:
when memory is offlined or onlined a work item is added to the global
workqueue.
When the work item is run, it notifies the ipcns notifier chain with the
IPCNS_MEMCHANGED event.
Signed-off-by: Nadia Derbey
Resending with the right address for the containers mailing list.
So sorry...
Nadia Derbey wrote:
Hi,
Yesterday, I posted to lkml a series of patches that make the ipc
tunable msgmni scale with lowmem (see thread
http://lkml.org/lkml/2008/1/14/196).
Since these patches watch for memory
Hi,
Yesterday, I posted to lkml a series of patches that make the ipc
tunable msgmni scale with lowmem (see thread
http://lkml.org/lkml/2008/1/14/196).
Since these patches watch for memory hotplug notifications, I thought
that comments from linux-mm people would be interesting.
Also,
Yasunori Goto wrote:
Yasunori Goto wrote:
Hello Nadia-san.
@@ -118,6 +122,10 @@ struct ipc_namespace {
size_t shm_ctlall;
int shm_ctlmni;
int shm_tot;
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+ struct notifier_block ipc_memory_hotplug;
I'm realizing that I wrote Andrew's address wrong. So please if ever
you're answering in this thread correct his address by hand.
Sorry for that!
Now if you find it more convenient that I start a new thread with the
right address, please tell me and I'll do it.
Regards,
Nadia
--
To
Yasunori Goto wrote:
Hello Nadia-san.
@@ -118,6 +122,10 @@ struct ipc_namespace {
size_t shm_ctlall;
int shm_ctlmni;
int shm_tot;
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+ struct notifier_block ipc_memory_hotplug;
+#endif
};
I'm sorry,
I'm realizing that I wrote Andrew's address wrong. So please if ever
you're answering in this thread correct his address by hand.
Sorry for that!
Now if you find it more convenient that I start a new thread with the
right address, please tell me and I'll do it.
Regards,
Nadia
--
To
Yasunori Goto wrote:
Hello Nadia-san.
@@ -118,6 +122,10 @@ struct ipc_namespace {
size_t shm_ctlall;
int shm_ctlmni;
int shm_tot;
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+ struct notifier_block ipc_memory_hotplug;
+#endif
};
I'm sorry,
Yasunori Goto wrote:
Yasunori Goto wrote:
Hello Nadia-san.
@@ -118,6 +122,10 @@ struct ipc_namespace {
size_t shm_ctlall;
int shm_ctlmni;
int shm_tot;
+
+#ifdef CONFIG_MEMORY_HOTPLUG
+ struct notifier_block ipc_memory_hotplug;
Hi,
Yesterday, I posted to lkml a series of patches that make the ipc
tunable msgmni scale with lowmem (see thread
http://lkml.org/lkml/2008/1/14/196).
Since these patches watch for memory hotplug notifications, I thought
that comments from linux-mm people would be interesting.
Also,
Resending with the right address for the containers mailing list.
So sorry...
Nadia Derbey wrote:
Hi,
Yesterday, I posted to lkml a series of patches that make the ipc
tunable msgmni scale with lowmem (see thread
http://lkml.org/lkml/2008/1/14/196).
Since these patches watch for memory
is registered into the memory hotplug notifier chain (it is
unregistered when the ipc namespace is freed). That routine is then activated
when memory is added or removed, in order to recompute msgmni for that
namespace.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc.h
[PATCH 03/04]
This is a trivial patch that defines the priority of slab_memory_callback in
the callback chain as a constant.
This is to prepare for next patch in the series.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/memory.h |6 ++
mm/slub.c
[PATCH 02/04]
Since all the namespaces see the same amount of memory (the total one)
this patch introduces a new variable that counts the ipc namespaces and
divides msg_ctlmni by this counter.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc.h |1 +
ipc
Resending the set of patches after Andrew's remark about the fact that we
should take the lowmem into account, rather than the total ram.
Also, these patches have been enhanced with memory hotplug management.
Note: they now have to applied to 2.6.24-rc7.
---
On large systems
, but it also defines it as
a size in bytes (the code expresses it in Kbytes).
. MSGSEG definition has been removed since it used only once in msgctl().
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/msg.h | 14 +++---
ipc/msg.c
is registered into the memory hotplug notifier chain (it is
unregistered when the ipc namespace is freed). That routine is then activated
when memory is added or removed, in order to recompute msgmni for that
namespace.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc.h| 25
Resending the set of patches after Andrew's remark about the fact that we
should take the lowmem into account, rather than the total ram.
Also, these patches have been enhanced with memory hotplug management.
Note: they now have to applied to 2.6.24-rc7.
---
On large systems
, but it also defines it as
a size in bytes (the code expresses it in Kbytes).
. MSGSEG definition has been removed since it used only once in msgctl().
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/msg.h | 14 +++---
ipc/msg.c | 44
[PATCH 02/04]
Since all the namespaces see the same amount of memory (the total one)
this patch introduces a new variable that counts the ipc namespaces and
divides msg_ctlmni by this counter.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc.h |1 +
ipc/msg.c
[PATCH 03/04]
This is a trivial patch that defines the priority of slab_memory_callback in
the callback chain as a constant.
This is to prepare for next patch in the series.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/memory.h |6 ++
mm/slub.c |2
[PATCH 02/02]
Since all the namespaces see the same amount of memory (the total one)
this patch introduces a new variable that counts the ipc namespaces and divides
msg_ctlmni by this counter.
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/ipc.h |1 +
ipc
defines it as
a size in bytes (the code expresses it in Kbytes).
. MSGSEG definition has been removed since it used only once in msgctl().
Signed-off-by: Nadia Derbey <[EMAIL PROTECTED]>
---
include/linux/msg.h |6 +++---
ipc/msg.c | 20 ++--
2
On large systems we'd like to allow a larger number of message queues.
In some cases up to 32K. However simply setting MSGMNI to a larger value may
cause problems for smaller systems.
The first patch of this series introduces a default maximum number of message
queue ids that scales with the
On large systems we'd like to allow a larger number of message queues.
In some cases up to 32K. However simply setting MSGMNI to a larger value may
cause problems for smaller systems.
The first patch of this series introduces a default maximum number of message
queue ids that scales with the
[PATCH 02/02]
Since all the namespaces see the same amount of memory (the total one)
this patch introduces a new variable that counts the ipc namespaces and divides
msg_ctlmni by this counter.
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/ipc.h |1 +
ipc/msg.c
defines it as
a size in bytes (the code expresses it in Kbytes).
. MSGSEG definition has been removed since it used only once in msgctl().
Signed-off-by: Nadia Derbey [EMAIL PROTECTED]
---
include/linux/msg.h |6 +++---
ipc/msg.c | 20 ++--
2 files
_t pos,
+ loff_t *new_pos)
{
struct kern_ipc_perm *ipc;
int total, id;
Acked-by: Nadia Derbey <[EMAIL PROTECTED]>
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,
+ loff_t *new_pos)
{
struct kern_ipc_perm *ipc;
int total, id;
Acked-by: Nadia Derbey [EMAIL PROTECTED]
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Robert P. J. Day wrote:
i can see what the theoretical purpose for it is here:
http://kerneltrap.org/node/6656
but it's not clear how it can possibly be set from userland given
that:
$ grep -r TAINT_USER *
include/linux/kernel.h:#define TAINT_USER (1<<6)
Robert P. J. Day wrote:
i can see what the theoretical purpose for it is here:
http://kerneltrap.org/node/6656
but it's not clear how it can possibly be set from userland given
that:
$ grep -r TAINT_USER *
include/linux/kernel.h:#define TAINT_USER (16)
kernel/panic.c:
Pierre Peiffer wrote:
In the new implementation of the [sem|shm|msg]_lock[_check]() routines,
we use the return value of ipc_lock() in container_of() without any check.
But ipc_lock may return a errcode. The use of this errcode in container_of()
may alter this errcode, and we don't want this.
Pierre Peiffer wrote:
With the use of idr to store the ipc, the case where the idr cache is
empty, when idr_get_new is called (this may happen even if we call
idr_pre_get() before), is not well handled: it lets semget()/shmget()/msgget()
return ENOSPC when this cache is empty, what 1. does not
Pierre Peiffer wrote:
With the use of idr to store the ipc, the case where the idr cache is
empty, when idr_get_new is called (this may happen even if we call
idr_pre_get() before), is not well handled: it lets semget()/shmget()/msgget()
return ENOSPC when this cache is empty, what 1. does not
Pierre Peiffer wrote:
In the new implementation of the [sem|shm|msg]_lock[_check]() routines,
we use the return value of ipc_lock() in container_of() without any check.
But ipc_lock may return a errcode. The use of this errcode in container_of()
may alter this errcode, and we don't want this.
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