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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Beginning of gfp_t annotations:
- -Wbitwise added to CHECKFLAGS
- old __bitwise renamed to __bitwise__
- __bitwise defined to either __bitwise__ or nothing, depending on
__CHECK_ENDIAN__ being defined
- gfp_t switched from __nocast to __bitwise__
- force cast to gfp_t added to __GFP_... constants
- new helper - gfp_zone(); extracts zone bits out of gfp_t value and casts
the result to int
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Optimise attribute revalidation when hardlinking. Add post-op attributes
for the directory and the original inode.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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"Optional" means that the close call will not fail if the getattr
at the end of the compound fails.
If it does succeed, try to refresh inode attributes.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Since the directory attributes change every time we CREATE a file,
we might as well pick up the new directory attributes in the same
compound.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Since we almost always call nfs_end_data_update() after we called
nfs_refresh_inode(), we now end up marking the inode metadata
as needing revalidation immediately after having updated it.
This patch rearranges things so that we mark the inode as needing
revalidation _before_ we call nfs_refresh_inode() on those operations
that need it.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Allow nfs_refresh_inode() also to update attributes on the inode if the
RPC call was sent after the last call to nfs_update_inode().
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Commit id 6142891a0c0209c91aa4a98f725de0d6e2ed4918
Andi Kleen reports that it seems to break things for some people,
and since it's purely a small optimization, revert it for now.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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asm-arm/bitops.h
Patch from Ian Campbell
Sparse complains about the definition of generic_fls in asm-arm/bitops.h:
CHECK /home/icampbell/devel/kernel/2.6/arch/arm/mach-pxa/viper.c
include2/asm/bitops.h:350:34: error: marked inline, but without a definition
The definition is unnecessary since linux/bitops.h defines generic_fls before including asm/bitops.h and asm/bitops.h should not be included directly. There are still some places where asm/bitops.h is directly included, but I think that code should be fixed. I was a little wary of the patch for this reason but lubbock, mainstone and assabet all build OK and so do my in house boards...
ARM is the only arch with the generic_fls prototype in this way.
Signed-off-by: Ian Campbell <icampbell@arcom.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Signed-off-by: Jochen Friedrich <jochen@scram.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
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My alpha build is exploding because asm/atomic.h now needs smb_mb(), which is
over in the (not included) system.h.
I fear what will happen if I include system.h into atomic.h, so let's put the
barriers into their own header file.
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Add the new ID 0x132a and configure the new PCI Diva console port. This
device supports only 1 single console UART.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Tested by Wolfgang Denk with this device:
00:0f.0 Network controller: PLX Technology, Inc. PCI <-> IOBus Bridge (rev 01)
Subsystem: Exsys EX-4055 4S(16C550) RS-232
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 10
Region 0: Memory at 80100000 (32-bit, non-prefetchable) [size=128]
Region 1: I/O ports at 7080 [size=128]
Region 2: I/O ports at 7400 [size=32]
00:0f.0 Class 0280: 10b5:9050 (rev 01)
Subsystem: d84d:4055
Results with this patch:
Serial: 8250/16550 driver $Revision: 1.90 $ 32 ports, IRQ sharing enabled
ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
PCI: Found IRQ 10 for device 0000:00:0f.0
ttyS4 at I/O 0x7400 (irq = 10) is a 16550A
ttyS5 at I/O 0x7408 (irq = 10) is a 16550A
ttyS6 at I/O 0x7410 (irq = 10) is a 16550A
ttyS7 at I/O 0x7418 (irq = 10) is a 16550A
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Fix a bug which was reported and diagnosed by
Stefan Jones <stefan.jones@churchillrandoms.co.uk>
IDR trees include a cache of idr_layer objects. There's no way to destroy
this cache, so when we discard an overall idr tree we end up leaking some
memory.
Add and use idr_destroy() for this. v9fs and infiniband also need to use
idr_destroy() to avoid leaks.
Or, we make the cache global, like radix_tree_preload(). Which is probably
better. Later.
Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org>
Cc: Roland Dreier <rolandd@cisco.com>
Cc: Robert Love <rml@novell.com>
Cc: John McCutchan <ttb@tentacle.dhs.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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As stated in Documentation/atomic_ops.txt, atomic functions
returning values must have the memory barriers both before and after
the operation.
Thanks to DaveM for pointing that out.
Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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On architectures where the char type defaults to unsigned some of the
arithmetic in the AX.25 stack to fail, resulting in some packets being dropped
on receive.
Credits for tracking this down and the original patch to
Bob Brose N0QBJ <linuxhams@n0qbj-11.ampr.org>.
Signed-off-by: Ralf Baechle DL5RB <ralf@linux-mips.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@mandriva.com>
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Patch from Ben Dooks
From: Guillaume Gourat <guillaume.gourat@nexvision.fr>
Add MASK definitions for DCLK0 and DCLK1
Signed-off-by: Guillaume Gourat <guillaume.gourat@nexvision.fr>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Ben Dooks
Avoid the possiblity that if the board is using
a 16.9334 or higher crystal with a high PLL
multiplier, then the pll value could overflow
the capability of an int.
Also fix the value types of the intermediate
variables to unsigned int.
Rewrite of patch from Guillaume Gourat
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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This reverts commit 3359b54c8c07338f3a863d1109b42eebccdcf379 and
replaces it with a cleaner version that is purely based on page table
operations, so that the synchronization between inode size and hugetlb
mappings becomes moot.
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This introduces a limit parameter to the core bootmem allocator; The new
parameter indicates that physical memory allocated by the bootmem
allocator should be within the requested limit.
We also introduce alloc_bootmem_low_pages_limit, alloc_bootmem_node_limit,
alloc_bootmem_low_pages_node_limit apis, but alloc_bootmem_low_pages_limit
is the only api used for swiotlb.
The existing alloc_bootmem_low_pages() api could instead have been
changed and made to pass right limit to the core allocator. But that
would make the patch more intrusive for 2.6.14, as other arches use
alloc_bootmem_low_pages(). We may be done that post 2.6.14 as a
cleanup.
With this, swiotlb gets memory within 4G for both x86_64 and ia64
arches.
Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Ravikiran G Thirumalai <kiran@scalex86.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The hugetlb pages are currently pre-faulted. At the time of mmap of
hugepages, we populate the new PTEs. It is possible that HW has already
cached some of the unused PTEs internally. These stale entries never
get a chance to be purged in existing control flow.
This patch extends the check in page fault code for hugepages. Check if
a faulted address falls with in size for the hugetlb file backing it.
We return VM_FAULT_MINOR for these cases (assuming that the arch
specific page-faulting code purges the stale entry for the archs that
need it).
Signed-off-by: Rohit Seth <rohit.seth@intel.com>
[ This is apparently arguably an ia64 port bug. But the code won't
hurt, and for now it fixes a real problem on some ia64 machines ]
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Remove some senseless wrappers.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Not only are the qop parameters that are passed around throughout the gssapi
unused by any currently implemented mechanism, but there appears to be some
doubt as to whether they will ever be used. Let's just kill them off for now.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Add support for privacy to the krb5 rpcsec_gss mechanism.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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The code this was originally derived from processed wrap and mic tokens using
the same functions. This required some contortions, and more would be required
with the addition of xdr_buf's, so it's better to separate out the two code
paths.
In preparation for adding privacy support, remove the last vestiges of the
old wrap token code.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Various xdr encode routines use au_rslack to guess where the reply argument
will end up, so we can set up the xdr_buf to recieve data into the right place
for zero copy.
Currently we calculate the au_rslack estimate when we check the verifier.
Normally this only depends on the verifier size. In the integrity case we add
a few bytes to allow for a length and sequence number.
It's a bit simpler to calculate only the verifier size when we check the
verifier, and delay the full calculation till we unwrap.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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For privacy, we need to allocate pages to store the encrypted data (passed
in pages can't be used without the risk of corrupting data in the page cache).
So we need a way to free that memory after the request has been transmitted.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Add support for privacy to generic gss-api code. This is dead code until we
have both a mechanism that supports privacy and code in the client or server
that uses it.
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Make NFSv4 return the fully initialized file pointer with the
stateid that it created in the lookup w/intent.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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This is needed by NFSv4 for atomicity reasons: our open command is in
fact a lookup+open, so we need to be able to propagate open context
information from lookup() into the resulting struct file's
private_data field.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Currently we fail to do so if the process was signalled.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Once the state_owner and lock_owner semaphores get removed, it will be
possible for other OPEN requests to reopen the same file if they have
lower sequence ids than our CLOSE call.
This patch ensures that we recheck the file state once
nfs_wait_on_sequence() has completed waiting.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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NFSv4 file state-changing functions such as OPEN, CLOSE, LOCK,... are all
labelled with "sequence identifiers" in order to prevent the server from
reordering RPC requests, as this could cause its file state to
become out of sync with the client.
Currently the NFS client code enforces this ordering locally using
semaphores to restrict access to structures until the RPC call is done.
This, of course, only works with synchronous RPC calls, since the
user process must first grab the semaphore.
By dropping semaphores, and instead teaching the RPC engine to hold
the RPC calls until they are ready to be sent, we can extend this
process to work nicely with asynchronous RPC calls too.
This patch adds a new list called "rpc_sequence" that defines the order
of the RPC calls to be sent. We add one such list for each state_owner.
When an RPC call is ready to be sent, it checks if it is top of the
rpc_sequence list. If so, it proceeds. If not, it goes back to sleep,
and loops until it hits top of the list.
Once the RPC call has completed, it can then bump the sequence id counter,
and remove itself from the rpc_sequence list, and then wake up the next
sleeper.
Note that the state_owner sequence ids and lock_owner sequence ids are
all indexed to the same rpc_sequence list, so OPEN, LOCK,... requests
are all ordered w.r.t. each other.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Currently, call_encode will cause the entire RPC call to abort if it returns
an error. This is unnecessarily rigid, and gets in the way of attempts
to allow the NFSv4 layer to order RPC calls that carry sequence ids.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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