Dave Hansen [Thu, 23 Jun 2005 07:07:40 +0000 (00:07 -0700)]
[PATCH] sparsemem base: reorganize page->flags bit operations
Generify the value fields in the page_flags. The aim is to allow the location
and size of these fields to be varied. Additionally we want to move away from
fixed allocations per field whilst still enforcing the overall bit utilisation
limits. We rely on the compiler to spot and optimise the accessor functions.
Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Dave Hansen [Thu, 23 Jun 2005 07:07:39 +0000 (00:07 -0700)]
[PATCH] sparsemem base: simple NUMA remap space allocator
Introduce a simple allocator for the NUMA remap space. This space is very
scarce, used for structures which are best allocated node local.
This mechanism is also used on non-NUMA ia64 systems with a vmem_map to keep
the pgdat->node_mem_map initialized in a consistent place for all
architectures.
Issues:
o alloc_remap takes a node_id where we might expect a pgdat which was intended
to allow us to allocate the pgdat's using this mechanism; which we do not yet
do. Could have alloc_remap_node() and alloc_remap_nid() for this purpose.
Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Dave Hansen [Thu, 23 Jun 2005 07:07:38 +0000 (00:07 -0700)]
[PATCH] sparsemem base: early_pfn_to_nid() (works before sparse is initialized)
The following four patches provide the last needed changes before the
introduction of sparsemem. For a more complete description of what this
will do, please see this patch:
or previous posts on the subject:
http://marc.theaimsgroup.com/?t=110868540700001&r=1&w=2
http://marc.theaimsgroup.com/?l=linux-mm&m=109897373315016&w=2
Three of these are i386-only, but one of them reorganizes the macros
used to manage the space in page->flags, and will affect all platforms.
There are analogous patches to the i386 ones for ppc64, ia64, and
x86_64, but those will be submitted by the normal arch maintainers.
The combination of the four patches has been test-booted on a variety of
i386 hardware, and compiled for ppc64, i386, and x86-64 with about 17
different .configs. It's also been runtime-tested on ia64 configs (with
more patches on top).
This patch:
We _know_ which node pages in general belong to, at least at a very gross
level in node_{start,end}_pfn[]. Use those to target the allocations of
pages.
Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Dave Hansen [Thu, 23 Jun 2005 07:07:37 +0000 (00:07 -0700)]
[PATCH] remove non-DISCONTIG use of pgdat->node_mem_map
This patch effectively eliminates direct use of pgdat->node_mem_map outside
of the DISCONTIG code. On a flat memory system, these fields aren't
currently used, neither are they on a sparsemem system.
There was also a node_mem_map(nid) macro on many architectures. Its use
along with the use of ->node_mem_map itself was not consistent. It has
been removed in favor of two new, more explicit, arch-independent macros:
I called them "pgdat" and "nid" because we overload the term "node" to mean
"NUMA node", "DISCONTIG node" or "pg_data_t" in very confusing ways. I
believe the newer names are much clearer.
These macros can be overridden in the sparsemem case with a theoretically
slower operation using node_start_pfn and pfn_to_page(), instead. We could
make this the only behavior if people want, but I don't want to change too
much at once. One thing at a time.
This patch removes more code than it adds.
Compile tested on alpha, alpha discontig, arm, arm-discontig, i386, i386
generic, NUMAQ, Summit, ppc64, ppc64 discontig, and x86_64. Full list
here: http://sr71.net/patches/2.6.12/2.6.12-rc1-mhp2/configs/
Boot tested on NUMAQ, x86 SMP and ppc64 power4/5 LPARs.
Signed-off-by: Dave Hansen <haveblue@us.ibm.com> Signed-off-by: Martin J. Bligh <mbligh@aracnet.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
[PATCH] driver core: Fix up the device_attach() error handling in bus_add_device()
Don't error out if something "bad" happens when trying to bind a driver to a
device. We want the sysfs attributes to be present for later when we try to
tear down the device.
[LTPC]: Replace schedule_timeout() with ssleep()/msleep()
Use ssleep() / msleep() [as appropriate]
instead of schedule_timeout() to guarantee the task delays as expected.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Acked-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br> Signed-off-by: Maximilian Attems <janitor@sternwelten.at> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Shaun Pereira [Thu, 23 Jun 2005 05:16:17 +0000 (22:16 -0700)]
[X25]: Fast select with no restriction on response
This patch is a follow up to patch 1 regarding "Selective Sub Address
matching with call user data". It allows use of the Fast-Select-Acceptance
optional user facility for X.25.
This patch just implements fast select with no restriction on response
(NRR). What this means (according to ITU-T Recomendation 10/96 section
6.16) is that if in an incoming call packet, the relevant facility bits are
set for fast-select-NRR, then the called DTE can issue a direct response to
the incoming packet using a call-accepted packet that contains
call-user-data. This patch allows such a response.
The called DTE can also respond with a clear-request packet that contains
call-user-data. However, this feature is currently not implemented by the
patch.
How is Fast Select Acceptance used?
By default, the system does not allow fast select acceptance (as before).
To enable a response to fast select acceptance,
After a listen socket in created and bound as follows
socket(AF_X25, SOCK_SEQPACKET, 0);
bind(call_soc, (struct sockaddr *)&locl_addr, sizeof(locl_addr));
but before a listen system call is made, the following ioctl should be used.
ioctl(call_soc,SIOCX25CALLACCPTAPPRV);
Now the listen system call can be made
listen(call_soc, 4);
After this, an incoming-call packet will be accepted, but no call-accepted
packet will be sent back until the following system call is made on the socket
that accepts the call
ioctl(vc_soc,SIOCX25SENDCALLACCPT);
The network (or cisco xot router used for testing here) will allow the
application server's call-user-data in the call-accepted packet,
provided the call-request was made with Fast-select NRR.
Signed-off-by: Shaun Pereira <spereira@tusc.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Shaun Pereira [Thu, 23 Jun 2005 05:15:01 +0000 (22:15 -0700)]
[X25]: Selective sub-address matching with call user data.
From: Shaun Pereira <spereira@tusc.com.au>
This is the first (independent of the second) patch of two that I am
working on with x25 on linux (tested with xot on a cisco router). Details
are as follows.
Current state of module:
A server using the current implementation (2.6.11.7) of the x25 module will
accept a call request/ incoming call packet at the listening x.25 address,
from all callers to that address, as long as NO call user data is present
in the packet header.
If the server needs to choose to accept a particular call request/ incoming
call packet arriving at its listening x25 address, then the kernel has to
allow a match of call user data present in the call request packet with its
own. This is required when multiple servers listen at the same x25 address
and device interface. The kernel currently matches ALL call user data, if
present.
Current Changes:
This patch is a follow up to the patch submitted previously by Andrew
Hendry, and allows the user to selectively control the number of octets of
call user data in the call request packet, that the kernel will match. By
default no call user data is matched, even if call user data is present.
To allow call user data matching, a cudmatchlength > 0 has to be passed
into the kernel after which the passed number of octets will be matched.
Otherwise the kernel behavior is exactly as the original implementation.
This patch also ensures that as is normally the case, no call user data
will be present in the Call accepted / call connected packet sent back to
the caller
Future Changes on next patch:
There are cases however when call user data may be present in the call
accepted packet. According to the X.25 recommendation (ITU-T 10/96)
section 5.2.3.2 call user data may be present in the call accepted packet
provided the fast select facility is used. My next patch will include this
fast select utility and the ability to send up to 128 octets call user data
in the call accepted packet provided the fast select facility is used. I
am currently testing this, again with xot on linux and cisco.
Signed-off-by: Shaun Pereira <spereira@tusc.com.au>
(With a fix from Alexey Dobriyan <adobriyan@gmail.com>) Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: David S. Miller <davem@davemloft.net>
James Lamanna [Thu, 23 Jun 2005 05:12:57 +0000 (22:12 -0700)]
[EBTABLES]: vfree() checking cleanups
From: jlamanna@gmail.com
ebtables.c vfree() checking cleanups.
Signed-off by: James Lamanna <jlamanna@gmail.com> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: David S. Miller <davem@davemloft.net>
[ATALK] aarp: replace schedule_timeout() with msleep()
From: Nishanth Aravamudan <nacc@us.ibm.com>
Use msleep() instead of schedule_timeout() to guarantee the task
delays as expected. The current code is not wrong, but it does not account for
early return due to signals, so I think msleep() should be appropriate.
Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by: Domen Puncer <domen@coderock.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Moyer [Thu, 23 Jun 2005 05:05:59 +0000 (22:05 -0700)]
[NETPOLL]: allow multiple netpoll_clients to register against one interface
This patch provides support for registering multiple netpoll clients to the
same network device. Only one of these clients may register an rx_hook,
however. In practice, this restriction has not been problematic. It is
worth mentioning, though, that the current design can be easily extended to
allow for the registration of multiple rx_hooks.
The basic idea of the patch is that the rx_np pointer in the netpoll_info
structure points to the struct netpoll that has rx_hook filled in. Aside
from this one case, there is no need for a pointer from the struct
net_device to an individual struct netpoll.
A lock is introduced to protect the setting and clearing of the np_rx
pointer. The pointer will only be cleared upon netpoll client module
removal, and the lock should be uncontested.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Moyer [Thu, 23 Jun 2005 05:05:31 +0000 (22:05 -0700)]
[NETPOLL]: Introduce a netpoll_info struct
This patch introduces a netpoll_info structure, which the struct net_device
will now point to instead of pointing to a struct netpoll. The reason for
this is two-fold: 1) fields such as the rx_flags, poll_owner, and poll_lock
should be maintained per net_device, not per netpoll; and 2) this is a first
step in providing support for multiple netpoll clients to register against the
same net_device.
The struct netpoll is now pointed to by the netpoll_info structure. As
such, the previous behaviour of the code is preserved.
Signed-off-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The boot_pageset needs to be preserved for hotplugging and for off line
processors and nodes. Otherwise pointers will point into memory that has
now a different use. /proc/zoneinfo is currently showing strange results
if processors / nodes are not present.
Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Herbert Xu [Wed, 22 Jun 2005 20:29:03 +0000 (13:29 -0700)]
[CRYPTO]: Use CPU cycle counters in tcrypt
After using this facility for a while to test my changes to the
cipher crypt() layer, I realised that I should've listend to Dave
and made this thing use CPU cycle counters :) As it is it's too
jittery for me to feel safe about relying on the results.
So here is a patch to make it use CPU cycles by default but fall
back to jiffies if the user specifies a non-zero sec value.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Harald Welte [Wed, 22 Jun 2005 20:27:23 +0000 (13:27 -0700)]
[CRYPTO]: Add cipher speed tests
From: Reyk Floeter <reyk@vantronix.net>
I recently had the requirement to do some benchmarking on cryptoapi, and
I found reyk's very useful performance test patch [1].
However, I could not find any discussion on why that extension (or
something providing a similar feature but different implementation) was
not merged into mainline. If there was such a discussion, can someone
please point me to the archive[s]?
I've now merged the old patch into 2.6.12-rc1, the result can be found
attached to this email.
Signed-off-by: Harald Welte <laforge@gnumonks.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Trond Myklebust [Wed, 22 Jun 2005 17:16:31 +0000 (17:16 +0000)]
[PATCH] NLM: fix a client-side race on blocking locks.
If the lock blocks, the server may send us a GRANTED message that
races with the reply to our LOCK request. Make sure that we catch
the GRANTED by queueing up our request on the nlm_blocked list
before we send off the first LOCK rpc call.
Trond Myklebust [Wed, 22 Jun 2005 17:16:30 +0000 (17:16 +0000)]
[PATCH] NFS: Cleanup of caching code, and slight optimization of writes.
Unless we're doing O_APPEND writes, we really don't care about revalidating
the file length. Just make sure that we catch any page cache invalidations.
Trond Myklebust [Wed, 22 Jun 2005 17:16:30 +0000 (17:16 +0000)]
[PATCH] NFS: Fix the file size revalidation
Instead of looking at whether or not the file is open for writes before
we accept to update the length using the server value, we should rather
be looking at whether or not we are currently caching any writes.
Failure to do so means in particular that we're not updating the file
length correctly after obtaining a POSIX or BSD lock.
Trond Myklebust [Wed, 22 Jun 2005 17:16:29 +0000 (17:16 +0000)]
[PATCH] NFSv4: Fix up races in nfs4_proc_setattr()
If we do not hold a valid stateid that is open for writes, there is little
point in doing an extra open of the file, as the RFC does not appear to
mandate this...
Make setattr use the correct stateid if we're holding mandatory byte
range locks.
Olivier Galibert [Wed, 22 Jun 2005 17:16:29 +0000 (17:16 +0000)]
[PATCH] NFS: Hide NFS server-generated readdir cookies from userland
NFSv3 currently returns the unsigned 64-bit cookie directly to
userspace. The following patch causes the kernel to generate
loff_t offsets for the benefit of userland.
The current server-generated READDIR cookie is cached in the
nfs_open_context instead of in filp->f_pos, so we still end up work
correctly under directory insertions/deletion.
Chuck Lever [Wed, 22 Jun 2005 17:16:28 +0000 (17:16 +0000)]
[PATCH] RPC: kick off socket connect operations faster
Make the socket transport kick the event queue to start socket connects
immediately. This should improve responsiveness of applications that are
sensitive to slow mount operations (like automounters).
We are now also careful to cancel the connect worker before destroying
the xprt. This eliminates a race where xprt_destroy can finish before
the connect worker is even allowed to run.
Test-plan:
Destructive testing (unplugging the network temporarily). Connectathon
with UDP and TCP. Hard-code impossibly small connect timeout.
Version: Fri, 29 Apr 2005 15:32:01 -0400
Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Chuck Lever [Wed, 22 Jun 2005 17:16:28 +0000 (17:16 +0000)]
[PATCH] RPC: TCP reconnects are too slow
When the network layer reports a connection close, the RPC task
waiting to reconnect should be notified so it can retry immediately
instead of waiting for the normal connection establishment timeout.
This reverts a change made in 2.6.6 as part of adding client support
for RPC over TCP socket idle timeouts.
Test-plan:
Destructive testing with NFS over TCP mounts.
Version: Fri, 29 Apr 2005 15:31:46 -0400
Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Wed, 22 Jun 2005 17:16:28 +0000 (17:16 +0000)]
[PATCH] RPC: Ensure rpc calls respects the RPC_NOINTR flag
For internal purposes, the rpc_clnt_sigmask() call is replaced by
a call to rpc_task_sigmask(), which ensures that the current task
sigmask respects both the client cl_intr flag and the per-task NOINTR flag.
Trond Myklebust [Wed, 22 Jun 2005 17:16:28 +0000 (17:16 +0000)]
[PATCH] NFSv4: Fix an Oops in the callback code.
The changeset "trond.myklebust@fys.uio.no|ChangeSet|20050322152404|16979"
(RPC: Ensure XDR iovec length is initialized correctly in call_header)
causes the NFSv4 callback code to BUG() due to an incorrectly initialized
scratch buffer.
Reuben Farrelly [Wed, 22 Jun 2005 17:16:28 +0000 (17:16 +0000)]
[PATCH] NFSv4: Fix build warning
From: Reuben Farrelly <reuben-lkml@reub.net>
With gcc-4.0:
fs/nfs/nfs4proc.c:2976: error: static declaration of
'nfs4_file_inode_operations' follows non-static declaration
fs/nfs/nfs4_fs.h:179: error: previous declaration of
'nfs4_file_inode_operations' was here
Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Attach acls to inodes in the icache to avoid unnecessary GETACL RPC
round-trips. As long as the client doesn't retrieve any acls itself, only the
default acls of exiting directories and the default and access acls of new
directories will end up in the cache, which preserves some memory compared to
always caching the access and default acl of all files.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Olaf Kirch <okir@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
[PATCH] NFS: Fix handling of the umask when an NFSv3 default acl is present.
NFSv3 has no concept of a umask on the server side: The client applies
the umask locally, and sends the effective permissions to the server.
This behavior is wrong when files are created in a directory that has a
default ACL. In this case, the umask is supposed to be ignored, and
only the default ACL determines the file's effective permissions.
Usually its the server's task to conditionally apply the umask. But
since the server knows nothing about the umask, we have to do it on the
client side. This patch tries to fetch the parent directory's default
ACL before creating a new file, computes the appropriate create mode to
send to the server, and finally sets the new file's access and default
acl appropriately.
Many thanks to Buck Huppmann <buchk@pobox.com> for sending the initial
version of this patch, as well as for arguing why we need this change.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Olaf Kirch <okir@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This adds acl support fo nfs clients via the NFSACL protocol extension, by
implementing the getxattr, listxattr, setxattr, and removexattr iops for the
system.posix_acl_access and system.posix_acl_default attributes. This patch
implements a dumb version that uses no caching (and thus adds some overhead).
(Another patch in this patchset adds caching as well.)
Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Olaf Kirch <okir@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This adds functions for encoding and decoding POSIX ACLs for the NFSACL
protocol extension, and the GETACL and SETACL RPCs. The implementation is
compatible with NFSACL in Solaris.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Acked-by: Olaf Kirch <okir@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
[PATCH] RPC: Allow the sunrpc server to multiplex serveral programs on a single port
The NFS and NFSACL programs run on the same RPC transport. This patch adds
support for this by converting svc_program into a chained list of programs
(server-side).
Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Olaf Kirch <okir@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
[PATCH] NFSD: Add NFS3ERR_NOTSUPP to the nfsd error mapping table
Add the missing NFS3ERR_NOTSUPP error code (defined in NFSv3) to the
system-to-protocol-error table in nfsd. The nfsacl extension uses this error
code.
Signed-off-by: Andreas Gruenbacher <agruen@suse.de> Signed-off-by: Olaf Kirch <okir@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Currently we return -ENOMEM for every single failure to create a new auth.
This is actually accurate for auth_null and auth_unix, but for auth_gss it's a
bit confusing.
Allow rpcauth_create (and the ->create methods) to return errors. With this
patch, the user may sometimes see an EINVAL instead. Whee.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
J. Bruce Fields [Wed, 22 Jun 2005 17:16:23 +0000 (17:16 +0000)]
[PATCH] NFSv4: client-side caching NFSv4 ACLs
Add nfs4_acl field to the nfs_inode, and use it to cache acls. Only cache
acls of size up to a page. Also prepare for up to a page of acl data even
when the user doesn't pass in a buffer, as when they want to get the acl
length to decide what size buffer to allocate.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
J. Bruce Fields [Wed, 22 Jun 2005 17:16:22 +0000 (17:16 +0000)]
[PATCH] NFSv4: ACL support for the NFSv4 client: read
Client-side support for NFSv4 ACLs. Exports the raw xdr code via the
system.nfs4_acl extended attribute. It is up to userspace to decode the acl
(and to provide correctly xdr'd acls on setxattr), and to convert to/from
POSIX ACLs if desired.
This patch provides only the read support.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
J. Bruce Fields [Wed, 22 Jun 2005 17:16:22 +0000 (17:16 +0000)]
[PATCH] NFS: Allow NFS versions to support different sets of inode operations.
ACL support will require supporting additional inode operations in v4
(getxattr, setxattr, listxattr). This patch allows different protocol versions
to support different inode operations by adding a file_inode_ops to the
nfs_rpc_ops (to match the existing dir_inode_ops).
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Trond Myklebust [Wed, 22 Jun 2005 17:16:20 +0000 (17:16 +0000)]
[PATCH] NFS: Kill annoying mount version mismatch printks
Ensure that we fix up the missing fields in the nfs_mount_data with
sane defaults for older versions of mount, and return errors in the
cases where we cannot.
Convert a bunch of annoying warnings into dprintks()
Return -EPROTONOSUPPORT rather than EIO if mount() tries to set NFSv3
without it actually being compiled in.
Trond Myklebust [Wed, 22 Jun 2005 17:16:19 +0000 (17:16 +0000)]
[PATCH] RPC: Fix a race with rpc_restart_call()
If the task->tk_exit() wants to restart the RPC call after delaying
then the current RPC code will clobber the timer by calling
rpc_delete_timer() immediately after re-entering the loop in
__rpc_execute().
Problem noticed by Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Russell King [Wed, 22 Jun 2005 19:58:29 +0000 (20:58 +0100)]
[PATCH] ARM: Factor out common pmd_populate functionality
Both pmd_populate variants set two pmd entries before
ensuring that they are flushed from the cache. Separate
this functionality into __pmd_populate().
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Russell King [Wed, 22 Jun 2005 19:26:05 +0000 (20:26 +0100)]
[PATCH] ARM: Move signal return code into vector page
Move the signal return code into the vector page instead of placing
it on the user mode stack, which will allow us to avoid flushing
the instruction cache on signals, as well as eventually allowing
non-exec stack.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
projects / linux-2.6-omap-h63xx.git / log