Re: [PATCH] Re: BUG: race-cond with partition-check

2001-06-08 Thread Malcolm Beattie
/* No Such Agen^Wdevice or no minors to use for partitions */ > + /* No such device or no minors to use for partitions */ Any reason why you're silently removing a good old anti-NSA joke? Conspiracy theorists may have fun with that... :-) --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED

Re: [PATCH] Re: BUG: race-cond with partition-check

2001-06-08 Thread Malcolm Beattie
to use for partitions */ + /* No such device or no minors to use for partitions */ Any reason why you're silently removing a good old anti-NSA joke? Conspiracy theorists may have fun with that... :-) --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University

Re: Why side-effects on open(2) are evil. (was Re: [RFD w/info-PATCH]device arguments from lookup)

2001-05-24 Thread Malcolm Beattie
again later. You'll end up with stingy storage admins who refuse to give you a bunch of extra filesystem space for a while because they can't get it back again afterwards. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To un

Re: Why side-effects on open(2) are evil. (was Re: [RFD w/info-PATCH]device arguments from lookup)

2001-05-24 Thread Malcolm Beattie
with stingy storage admins who refuse to give you a bunch of extra filesystem space for a while because they can't get it back again afterwards. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line

Re: LANANA: To Pending Device Number Registrants

2001-05-16 Thread Malcolm Beattie
could fit the network filesystems > into the same scheme and get rid of the kludges a-la ncpfs mount sequence. > > There's only one sore spot: how'd you mount _that_ fs? ;-) Start up init with fs_fd on file descriptor 3 and init can put it where it likes. --Malcolm -- Malcolm Be

Re: LANANA: To Pending Device Number Registrants

2001-05-16 Thread Malcolm Beattie
filesystems into the same scheme and get rid of the kludges a-la ncpfs mount sequence. There's only one sore spot: how'd you mount _that_ fs? ;-) Start up init with fs_fd on file descriptor 3 and init can put it where it likes. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer

Re: Not a typewriter

2001-05-11 Thread Malcolm Beattie
or special file for which the operation was inappropriate. which is quite a nice way of putting it. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kerne

Re: Not a typewriter

2001-05-11 Thread Malcolm Beattie
for which the operation was inappropriate. which is quite a nice way of putting it. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message

Re: Wow! Is memory ever cheap!

2001-05-09 Thread Malcolm Beattie
r (now I get to the unsubstantiated part :-) that Sun chose a higher-performing design for their cache subsystem but which has a nastier failure mode in the case of cache errors. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services

Re: Wow! Is memory ever cheap!

2001-05-09 Thread Malcolm Beattie
-performing design for their cache subsystem but which has a nastier failure mode in the case of cache errors. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body

Block device strategy and requests

2001-04-26 Thread Malcolm Beattie
is best or doesn't it matter too much? --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More ma

Block device strategy and requests

2001-04-26 Thread Malcolm Beattie
? --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html

Re: zSeries

2001-04-18 Thread Malcolm Beattie
alcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.ht

Re: zSeries

2001-04-18 Thread Malcolm Beattie
Frank Fiene writes: Who can tell me, how is the performance of the big irons (zSeries) from IBM comparing a pc server with linux? Different. Very, very different. Elaborate on what problem you're trying to solve and then there'll be more chance of comparing platforms. --Malcolm -- Malcolm

Re: ftruncate not extending files?

2001-03-02 Thread Malcolm Beattie
"SuSv2 standards compliant" is your call. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMA

Re: ftruncate not extending files?

2001-03-02 Thread Malcolm Beattie
SuSv2 standards compliant" is your call. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED

Re: Serious reproducible 2.4.x kernel hang

2001-02-01 Thread Malcolm Beattie
Chris Evans writes: > > On Thu, 1 Feb 2001, Malcolm Beattie wrote: > > > Mapping the addresses from whichever ScrollLock combination produced > > the task list to symbols produces the call trace > > do_exit <- do_signal <- tcp_destroy_sock <- inet_ioctl <

Re: Serious reproducible 2.4.x kernel hang

2001-02-01 Thread Malcolm Beattie
Malcolm Beattie writes: > Chris Evans writes: > > I've just managed to reproduce this personally on 2.4.0. I've had a report > > that 2.4.1 is also affected. Both myself and the other person who > > reproduced this have SMP i686 machines, which may or may not be relevant.

Re: Serious reproducible 2.4.x kernel hang

2001-02-01 Thread Malcolm Beattie
ue, add_wait_queue, skb_recv_datagram and wait_for_packet mostly. Random thought: if vsftpd did a sendfile and then exited, becoming a zombie, could there be a problem with tearing down a sendfile mapping? I'm off to read some code. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix S

Re: [UPDATE] Fresh zerocopy patch on kernel.org

2001-02-01 Thread Malcolm Beattie
David S. Miller writes: > > Malcolm Beattie writes: > > David S. Miller writes: > > > > > > At the usual place: > > > > > > ftp://ftp.kernel.org/pub/linux/kernel/people/davem/zerocopy-2.4.1-1.diff.gz > > > >

Re: Serious reproducible 2.4.x kernel hang

2001-02-01 Thread Malcolm Beattie
, skb_recv_datagram and wait_for_packet mostly. Random thought: if vsftpd did a sendfile and then exited, becoming a zombie, could there be a problem with tearing down a sendfile mapping? I'm off to read some code. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University

Re: Serious reproducible 2.4.x kernel hang

2001-02-01 Thread Malcolm Beattie
Malcolm Beattie writes: Chris Evans writes: I've just managed to reproduce this personally on 2.4.0. I've had a report that 2.4.1 is also affected. Both myself and the other person who reproduced this have SMP i686 machines, which may or may not be relevant. To reproduce, all you need

Re: Serious reproducible 2.4.x kernel hang

2001-02-01 Thread Malcolm Beattie
Chris Evans writes: On Thu, 1 Feb 2001, Malcolm Beattie wrote: Mapping the addresses from whichever ScrollLock combination produced the task list to symbols produces the call trace do_exit - do_signal - tcp_destroy_sock - inet_ioctl - signal_return The inet_ioctl is odd

Re: [UPDATE] Fresh zerocopy patch on kernel.org

2001-01-31 Thread Malcolm Beattie
missing or can change or do to help to improve matters or track down potential problems? --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the

Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing to do with ECN)

2001-01-31 Thread Malcolm Beattie
ks (117 MByte/s block writes as measured by Bonnie on a RAID1/0 mixed RAIDset) and there are also four dual-port eepro fast ethernet cards, a Cisco 8-port 3508G gigabit switch and a 24-port 3524 fast ethernet switch (gigastack linked to the 3508G). I'm benchmarking and looking into the possibility of a

Re: [UPDATE] Fresh zerocopy patch on kernel.org

2001-01-31 Thread Malcolm Beattie
to help to improve matters or track down potential problems? --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] P

Re: Modprobe local root exploit

2000-11-14 Thread Malcolm Beattie
kernel call /sbin/kmodprobe instead of /sbin/modprobe. Then kmodprobe can sanitise all the data and exec the real modprobe. That way the only thing that needs auditing is a string munging/sanitising program. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford Unive

Re: Modprobe local root exploit

2000-11-14 Thread Malcolm Beattie
instead of /sbin/modprobe. Then kmodprobe can sanitise all the data and exec the real modprobe. That way the only thing that needs auditing is a string munging/sanitising program. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services

Re: Topic for discussion: OS Design

2000-10-23 Thread Malcolm Beattie
rather than IPCs. There are others, but PA-RISC > is the one I am aware of. Like S/390 secondary address space and cross-address-space services? --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from thi

Re: Topic for discussion: OS Design

2000-10-23 Thread Malcolm Beattie
. There are others, but PA-RISC is the one I am aware of. Like S/390 secondary address space and cross-address-space services? --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubs

Re: New Benchmark tools, lookie looky........

2000-10-17 Thread Malcolm Beattie
flink_append(bl_reqlog, (unsigned char *), sizeof rl); + } if (queue_new_request) (dev->request_fn)(); } but it would be easy to write the record (instead or as well) before the elevator_queue(). The patches are available from http://users.ox.ac.uk/~mbeattie/

Re: New Benchmark tools, lookie looky........

2000-10-17 Thread Malcolm Beattie
rl); + } if (queue_new_request) (dev-request_fn)(); } but it would be easy to write the record (instead or as well) before the elevator_queue(). The patches are available from http://users.ox.ac.uk/~mbeattie/linux-kernel.html --Malcolm -- Malcolm Beattie

Re: mapping user space buffer to kernel address space

2000-10-13 Thread Malcolm Beattie
f it's there or what it looks like. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/

Re: mapping user space buffer to kernel address space

2000-10-13 Thread Malcolm Beattie
I can't say if it's there or what it looks like. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/

Re: large memory support for x86

2000-10-12 Thread Malcolm Beattie
ions take struct page units and handle all the internal mapping gubbins without you having to worry about it. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/

Re: want tool to open RPM package on Window 95

2000-10-12 Thread Malcolm Beattie
/s or next; $found_gzmagic = 1; } print; } > Can we go back now to kernel issues? Oops, yes, we now return you to your regularly scheduled kgcc wars. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/

Re: want tool to open RPM package on Window 95

2000-10-12 Thread Malcolm Beattie
back now to kernel issues? Oops, yes, we now return you to your regularly scheduled kgcc wars. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/

Re: large memory support for x86

2000-10-12 Thread Malcolm Beattie
hout you having to worry about it. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/

Re: Availability of kdb

2000-09-18 Thread Malcolm Beattie
e Second System Effect" are quoted around the industry decades later? And you think that's only a small handful of people? --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "

Re: Availability of kdb

2000-09-18 Thread Malcolm Beattie
Effect" are quoted around the industry decades later? And you think that's only a small handful of people? --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel&

Re: Adding set_system_gate fails in arch/i386/kernel/traps.

2000-09-12 Thread Malcolm Beattie
(vector != SYSCALL_VECTOR) set_intr_gate(vector, interrupt[i]); } and promptly zaps everything except SYSCALL_VECTOR. (FIRST_EXTERNAL_VECTOR is 0x20). Many thanks. --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford Universit

Re: Adding set_system_gate fails in arch/i386/kernel/traps.

2000-09-12 Thread Malcolm Beattie
ptly zaps everything except SYSCALL_VECTOR. (FIRST_EXTERNAL_VECTOR is 0x20). Many thanks. --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of

Re: Flavours of deceased bovine

2000-09-08 Thread Malcolm Beattie
ded. For example, 0baff1ed acce55ed decea5ed d15ab1ed d15ea5ed along with multiword ones like fee1dead dead1055 badca5e5 --Malcolm -- Malcolm Beattie <[EMAIL PROTECTED]> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this li

Re: Flavours of deceased bovine

2000-09-08 Thread Malcolm Beattie
decea5ed d15ab1ed d15ea5ed along with multiword ones like fee1dead dead1055 badca5e5 --Malcolm -- Malcolm Beattie [EMAIL PROTECTED] Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-k