10 years agoknfsd: Replace lock_kernel with a mutex in nfsd pool stats.
Ryusei Yamaguchi [Sat, 15 Aug 2009 15:54:41 +0000]
knfsd: Replace lock_kernel with a mutex in nfsd pool stats.

lock_kernel() in knfsd was replaced with a mutex. The later
commit 03cf6c9f49a8fea953d38648d016e3f46e814991 ("knfsd:
add file to export stats about nfsd pools") did not follow
that change. This patch fixes the issue.

Also move the get and put of nfsd_serv to the open and close methods
(instead of start and stop methods) to allow atomic check and increment
of reference count in the open method (where we can still return an
error).

Signed-off-by: Ryusei Yamaguchi <mandel59@gmail.com>
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Cc: Greg Banks <gnb@fmeh.org>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

10 years agonfsd: Fix unnecessary deny bits in NFSv4 ACL
Frank Filz [Fri, 14 Aug 2009 22:02:30 +0000]
nfsd: Fix unnecessary deny bits in NFSv4 ACL

The group deny entries end up denying tcy even though tcy was just
allowed by the allow entry. This appears to be due to:
ace->access_mask = mask_from_posix(deny, flags);
instead of:
ace->access_mask = deny_mask_from_posix(deny, flags);

Denying a previously allowed bit has no effect, so this shouldn't affect
behavior, but it's ugly.

Signed-off-by: Frank Filz <ffilzlnx@us.ibm.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

10 years agonfsd41: sunrpc: svc_tcp_recv_record()
Alexandros Batsakis [Thu, 20 Aug 2009 00:34:19 +0000]
nfsd41: sunrpc: svc_tcp_recv_record()

Factor functionality out of svc_tcp_recvfrom() to simplify routine

Signed-off-by: Alexandros Batsakis <batsakis@netapp.com>
Signed-off-by: Ricardo Labiaga <Ricardo.Labiaga@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

10 years agonfsd: populate sin6_scope_id on callback address with scopeid from rq_addr on SETCLIE...
Jeff Layton [Fri, 14 Aug 2009 16:57:59 +0000]
nfsd: populate sin6_scope_id on callback address with scopeid from rq_addr on SETCLIENTID call

When a SETCLIENTID call comes in, one of the args given is the svc_rqst.
This struct contains an rq_addr field which holds the address that sent
the call. If this is an IPv6 address, then we can use the sin6_scope_id
field in this address to populate the sin6_scope_id field in the
callback address.

AFAICT, the rq_addr.sin6_scope_id is non-zero if and only if the client
mounted the server's link-local address.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

10 years agonfsd: add support for NFSv4 callbacks over IPv6
Jeff Layton [Fri, 14 Aug 2009 16:57:58 +0000]
nfsd: add support for NFSv4 callbacks over IPv6

The framework to add this is all in place. Now, add the code to allow
support for establishing a callback channel on an IPv6 socket.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

10 years agonfsd: convert nfs4_cb_conn struct to hold address in sockaddr_storage
Jeff Layton [Fri, 14 Aug 2009 16:57:57 +0000]
nfsd: convert nfs4_cb_conn struct to hold address in sockaddr_storage

...rather than as a separate address and port fields. This will be
necessary for implementing callbacks over IPv6. Also, convert
gen_callback to use the standard rpcuaddr2sockaddr routine rather than
its own private one.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

10 years agonfsd: make nfs4_client->cl_addr a struct sockaddr_storage
Jeff Layton [Fri, 14 Aug 2009 16:57:56 +0000]
nfsd: make nfs4_client->cl_addr a struct sockaddr_storage

It's currently a __be32, which isn't big enough to hold an IPv6 address.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

10 years agosunrpc: add common routine for copying address portion of a sockaddr
Jeff Layton [Fri, 14 Aug 2009 16:57:55 +0000]
sunrpc: add common routine for copying address portion of a sockaddr

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

10 years agosunrpc: add routine for comparing addresses
Jeff Layton [Fri, 14 Aug 2009 16:57:54 +0000]
sunrpc: add routine for comparing addresses

lockd needs these sort of routines, as does the NFSv4 callback code.

Move lockd's routines into common code and rename them so that they can
be used by others.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

10 years agoMerge branch 'nfs-for-2.6.32' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6...
J. Bruce Fields [Fri, 21 Aug 2009 15:27:29 +0000]
Merge branch 'nfs-for-2.6.32' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6 into for-2.6.32-incoming

Conflicts:
net/sunrpc/cache.c

10 years agoSUNRPC: Ensure that sunrpc gets initialised before nfs, lockd, etc...
Trond Myklebust [Fri, 21 Aug 2009 12:17:56 +0000]
SUNRPC: Ensure that sunrpc gets initialised before nfs, lockd, etc...

We can oops if rpc_pipefs isn't properly initialised before we start to set
up objects that depend upon it.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: fix compile error in rpc_pipefs.h
J. Bruce Fields [Thu, 20 Aug 2009 21:08:39 +0000]
nfs: fix compile error in rpc_pipefs.h

This include is needed for the definition of delayed_work.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: Remove reference to generic_osync_inode from a comment
Jan Kara [Wed, 19 Aug 2009 16:04:43 +0000]
nfs: Remove reference to generic_osync_inode from a comment

generic_file_direct_write() no longer calls generic_osync_inode() so remove the
comment.

CC: linux-nfs@vger.kernel.org
CC: Neil Brown <neilb@suse.de>
CC: "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agoSUNRPC: cache must take a reference to the cache detail's module on open()
Trond Myklebust [Wed, 19 Aug 2009 22:13:00 +0000]
SUNRPC: cache must take a reference to the cache detail's module on open()

Otherwise we Oops if the module containing the cache detail is removed
before all cache readers have closed the file.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agoNFS: Use the DNS resolver in the mount code.
Trond Myklebust [Wed, 19 Aug 2009 22:12:34 +0000]
NFS: Use the DNS resolver in the mount code.

In the referral code, use it to look up the new server's ip address if the
fs_locations attribute contains a hostname.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agoNFS: Add a dns resolver for use with NFSv4 referrals and migration
Trond Myklebust [Wed, 19 Aug 2009 22:12:27 +0000]
NFS: Add a dns resolver for use with NFSv4 referrals and migration

The NFSv4 and NFSv4.1 protocols both allow for the redirection of a client
from one server to another in order to support filesystem migration and
replication. For full protocol support, we need to add the ability to
convert a DNS host name into an IP address that we can feed to the RPC
client.

We'll reuse the sunrpc cache, now that it has been converted to work with
rpc_pipefs.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agoSUNRPC: Fix a typo in cache_pipefs_files
Trond Myklebust [Wed, 19 Aug 2009 22:12:21 +0000]
SUNRPC: Fix a typo in cache_pipefs_files

We want the channel to be a regular file, so that we don't need to supply
rpc_pipe_ops.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agoMerge branch 'nfsv4_xdr_cleanups-for-2.6.32' into nfs-for-2.6.32
Trond Myklebust [Wed, 19 Aug 2009 22:21:52 +0000]
Merge branch 'nfsv4_xdr_cleanups-for-2.6.32' into nfs-for-2.6.32

Conflicts:
fs/nfs/nfs4xdr.c

10 years agonfs: nfs4xdr: optimize low level decoding
Benny Halevy [Fri, 14 Aug 2009 14:20:19 +0000]
nfs: nfs4xdr: optimize low level decoding

do not increment decoding ptr if not needed.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: get rid of READ_BUF
Benny Halevy [Fri, 14 Aug 2009 14:20:14 +0000]
nfs: nfs4xdr: get rid of READ_BUF

Use xdr_inline_decode instead.
Open code debug printout and error return.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: simplify decode_exchange_id by reusing decode_opaque_inline
Benny Halevy [Fri, 14 Aug 2009 14:20:10 +0000]
nfs: nfs4xdr: simplify decode_exchange_id by reusing decode_opaque_inline

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: get rid of COPYMEM
Benny Halevy [Fri, 14 Aug 2009 14:20:05 +0000]
nfs: nfs4xdr: get rid of COPYMEM

Just directly call memcpy.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: introduce decode_sessionid helper
Benny Halevy [Fri, 14 Aug 2009 14:20:00 +0000]
nfs: nfs4xdr: introduce decode_sessionid helper

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: introduce decode_verifier helper
Benny Halevy [Fri, 14 Aug 2009 14:19:56 +0000]
nfs: nfs4xdr: introduce decode_verifier helper

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[Trond: Fixed up an 'uninitialised variable' issue in decode_readdir]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: introduce decode_opaque_fixed and decode_stateid helpers
Benny Halevy [Fri, 14 Aug 2009 14:19:52 +0000]
nfs: nfs4xdr: introduce decode_opaque_fixed and decode_stateid helpers

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: introduce print_overflow_msg
Benny Halevy [Fri, 14 Aug 2009 14:19:48 +0000]
nfs: nfs4xdr: introduce print_overflow_msg

Part fo the nfs4xdr cleanup.  READ_BUF will go away.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: get rid of READTIME
Benny Halevy [Fri, 14 Aug 2009 14:19:44 +0000]
nfs: nfs4xdr: get rid of READTIME

It has no users.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: get rid of READ64
Benny Halevy [Fri, 14 Aug 2009 14:19:41 +0000]
nfs: nfs4xdr: get rid of READ64

s/READ64\(\*(.*)\)/p = xdr_decode_hyper(p, \1)/
s/READ64\((.*)\)/p = xdr_decode_hyper(p, &\1)/

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: get rid of READ32
Benny Halevy [Fri, 14 Aug 2009 14:19:37 +0000]
nfs: nfs4xdr: get rid of READ32

s/READ32\((.*)\)/\1 = be32_to_cpup(p++)/

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: merge xdr_encode_int+xdr_encode_opaque_fixed into xdr_encode_opaque
Benny Halevy [Fri, 14 Aug 2009 14:19:34 +0000]
nfs: nfs4xdr: merge xdr_encode_int+xdr_encode_opaque_fixed into xdr_encode_opaque

use encode_string where appropriate.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: optimize low level encoding
Benny Halevy [Fri, 14 Aug 2009 14:19:30 +0000]
nfs: nfs4xdr: optimize low level encoding

do not increment encoding ptr if not needed.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: change RESERVE_SPACE macro into a static helper
Benny Halevy [Fri, 14 Aug 2009 14:19:25 +0000]
nfs: nfs4xdr: change RESERVE_SPACE macro into a static helper

In order to open code and expose the result pointer assignment.

Alternatively, we can open code the call to xdr_reserve_space
and do the BUG_ON an the error case at the call site.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: encode_compound_hdr does not have to round up reserved bytes
Benny Halevy [Fri, 14 Aug 2009 14:19:18 +0000]
nfs: nfs4xdr: encode_compound_hdr does not have to round up reserved bytes

This is already done by xdr_reserve_space and since encode_compound_hdr
is adding a byte count to "12" which is already word aligned, the xdr
level rounding will work just as well.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: optimize RESERVE_SPACE in encode_create_session and encode_sequence
Benny Halevy [Fri, 14 Aug 2009 14:19:13 +0000]
nfs: nfs4xdr: optimize RESERVE_SPACE in encode_create_session and encode_sequence

Coalesce multilpe constant RESERVE_SPACEs into one

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: get rid of WRITEMEM
Benny Halevy [Fri, 14 Aug 2009 14:19:06 +0000]
nfs: nfs4xdr: get rid of WRITEMEM

s/WRITEMEM(/p = xdr_encode_opaque_fixed(p, /

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: get rid of WRITE64
Benny Halevy [Fri, 14 Aug 2009 14:19:01 +0000]
nfs: nfs4xdr: get rid of WRITE64

s/WRITE64/p = xdr_encode_hyper(p, /

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agonfs: nfs4xdr: get rid of WRITE32
Benny Halevy [Fri, 14 Aug 2009 14:18:54 +0000]
nfs: nfs4xdr: get rid of WRITE32

s/WRITE32/*p++ = cpu_to_be32/

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agosunrpc: ntoh -> be*_to_cpu
Benny Halevy [Fri, 14 Aug 2009 14:18:49 +0000]
sunrpc: ntoh -> be*_to_cpu

ntohl is already defined as be32_to_cpu.
be64_to_cpu has architecture specific optimized implementations.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agosunrpc: hton -> cpu_to_be*
Benny Halevy [Fri, 14 Aug 2009 14:18:44 +0000]
sunrpc: hton -> cpu_to_be*

htonl is already defined as cpu_to_be32.
cpu_to_be64 has architecture specific optimized implementations.

Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

10 years agoLinux 2.6.31-rc6
Linus Torvalds [Thu, 13 Aug 2009 22:43:34 +0000]
Linux 2.6.31-rc6

10 years agogenirq: prevent wakeup of freed irq thread
Linus Torvalds [Thu, 13 Aug 2009 20:05:10 +0000]
genirq: prevent wakeup of freed irq thread

free_irq() can remove an irqaction while the corresponding interrupt
is in progress, but free_irq() sets action->thread to NULL
unconditionally, which might lead to a NULL pointer dereference in
handle_IRQ_event() when the hard interrupt context tries to wake up
the handler thread.

Prevent this by moving the thread stop after synchronize_irq(). No
need to set action->thread to NULL either as action is going to be
freed anyway.

This fixes a boot crash reported against preempt-rt which uses the
mainline irq threads code to implement full irq threading.

[ tglx: removed local irqthread variable ]

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

10 years agoMerge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Thu, 13 Aug 2009 19:24:33 +0000]
Merge branch 'perfcounters-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf_counter: Report the cloning task as parent on perf_counter_fork()
  perf_counter: Fix an ipi-deadlock
  perf: Rework/fix the whole read vs group stuff
  perf_counter: Fix swcounter context invariance
  perf report: Don't show unresolved DSOs and symbols when -S/-d is used
  perf tools: Add a general option to enable raw sample records
  perf tools: Add a per tracepoint counter attribute to get raw sample
  perf_counter: Provide hw_perf_counter_setup_online() APIs
  perf list: Fix large list output by using the pager
  perf_counter, x86: Fix/improve apic fallback
  perf record: Add missing -C option support for specifying profile cpu
  perf tools: Fix dso__new handle() to handle deleted DSOs
  perf tools: Fix fallback to cplus_demangle() when bfd_demangle() is not available
  perf report: Show the tid too in -D
  perf record: Fix .tid and .pid fill-in when synthesizing events
  perf_counter, x86: Fix generic cache events on P6-mobile CPUs
  perf_counter, x86: Fix lapic printk message

10 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 13 Aug 2009 19:09:16 +0000]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: Fix handling of bad requeue syscall pairing
  futex: Fix compat_futex to be same as futex for REQUEUE_PI
  locking, sched: Give waitqueue spinlocks their own lockdep classes
  futex: Update futex_q lock_ptr on requeue proxy lock

10 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 13 Aug 2009 19:08:44 +0000]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Fix oops in identify_cpu() on CPUs without CPUID
  x86: Clear incorrectly forced X86_FEATURE_LAHF_LM flag
  x86, mce: therm_throt - change when we print messages
  x86: Add reboot quirk for every 5 series MacBook/Pro

10 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec...
Linus Torvalds [Thu, 13 Aug 2009 18:17:40 +0000]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jlbec/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: (22 commits)
  ocfs2: Fix possible deadlock when extending quota file
  ocfs2: keep index within status_map[]
  ocfs2: Initialize the cluster we're writing to in a non-sparse extend
  ocfs2: Remove redundant BUG_ON in __dlm_queue_ast()
  ocfs2/quota: Release lock for error in ocfs2_quota_write.
  ocfs2: Define credit counts for quota operations
  ocfs2: Remove syncjiff field from quota info
  ocfs2: Fix initialization of blockcheck stats
  ocfs2: Zero out padding of on disk dquot structure
  ocfs2: Initialize blocks allocated to local quota file
  ocfs2: Mark buffer uptodate before calling ocfs2_journal_access_dq()
  ocfs2: Make global quota files blocksize aligned
  ocfs2: Use ocfs2_rec_clusters in ocfs2_adjust_adjacent_records.
  ocfs2: Fix deadlock on umount
  ocfs2: Add extra credits and access the modified bh in update_edge_lengths.
  ocfs2: Fail ocfs2_get_block() immediately when a block needs allocation
  ocfs2: Fix error return in ocfs2_write_cluster()
  ocfs2: Fix compilation warning for fs/ocfs2/xattr.c
  ocfs2: Initialize count in aio_write before generic_write_checks
  ocfs2: log the actual return value of ocfs2_file_aio_write()
  ...

10 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Thu, 13 Aug 2009 17:59:29 +0000]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: allow upper limit for resync/reshape to be set when array is read-only
  md/raid5: Properly remove excess drives after shrinking a raid5/6
  md/raid5: make sure a reshape restarts at the correct address.
  md/raid5: allow new reshape modes to be restarted in the middle.
  md: never advance 'events' counter by more than 1.
  Remove deadlock potential in md_open

10 years agoMerge branch 'sh/for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
Linus Torvalds [Thu, 13 Aug 2009 17:57:53 +0000]
Merge branch 'sh/for-2.6.31' of git://git./linux/kernel/git/lethal/sh-2.6

* 'sh/for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: fix i2c init order on ap325rxa V2
  sh: fix i2c init order on Migo-R V2
  sh: convert processor device setup functions to arch_initcall()

10 years agoMake sock_sendpage() use kernel_sendpage()
Linus Torvalds [Thu, 13 Aug 2009 15:28:36 +0000]
Make sock_sendpage() use kernel_sendpage()

kernel_sendpage() does the proper default case handling for when the
socket doesn't have a native sendpage implementation.

Now, arguably this might be something that we could instead solve by
just specifying that all protocols should do it themselves at the
protocol level, but we really only care about the common protocols.
Does anybody really care about sendpage on something like Appletalk? Not
likely.

Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Julien TINNES <julien@cr0.org>
Acked-by: Tavis Ormandy <taviso@sdf.lonestar.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoperf_counter: Report the cloning task as parent on perf_counter_fork()
Peter Zijlstra [Thu, 13 Aug 2009 14:14:42 +0000]
perf_counter: Report the cloning task as parent on perf_counter_fork()

A bug in (9f498cc: perf_counter: Full task tracing) makes
profiling multi-threaded apps it go belly up.

[ output as: (PID:TID):(PPID:PTID) ]

 # ./perf report -D | grep FORK
0x4b0 [0x18]: PERF_EVENT_FORK: (3237:3237):(3236:3236)
0xa10 [0x18]: PERF_EVENT_FORK: (3237:3238):(3236:3236)
0xa70 [0x18]: PERF_EVENT_FORK: (3237:3239):(3236:3236)
0xad0 [0x18]: PERF_EVENT_FORK: (3237:3240):(3236:3236)
0xb18 [0x18]: PERF_EVENT_FORK: (3237:3241):(3236:3236)

Shows us that the test (27d028d perf report: Update for the new
FORK/EXIT events) in builtin-report.c:

        /*
         * A thread clone will have the same PID for both
         * parent and child.
         */
        if (thread == parent)
                return 0;

Will clearly fail.

The problem is that perf_counter_fork() reports the actual
parent, instead of the cloning thread.

Fixing that (with the below patch), yields:

 # ./perf report -D | grep FORK
0x4c8 [0x18]: PERF_EVENT_FORK: (1590:1590):(1589:1589)
0xbd8 [0x18]: PERF_EVENT_FORK: (1590:1591):(1590:1590)
0xc80 [0x18]: PERF_EVENT_FORK: (1590:1592):(1590:1590)
0x3338 [0x18]: PERF_EVENT_FORK: (1590:1593):(1590:1590)
0x66b0 [0x18]: PERF_EVENT_FORK: (1590:1594):(1590:1590)

Which both makes more sense and doesn't confuse perf report
anymore.

Reported-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: paulus@samba.org
Cc: Anton Blanchard <anton@samba.org>
Cc: Arjan van de Ven <arjan@infradead.org>
LKML-Reference: <1250172882.5241.62.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf_counter: Fix an ipi-deadlock
Peter Zijlstra [Thu, 13 Aug 2009 09:47:54 +0000]
perf_counter: Fix an ipi-deadlock

perf_pending_counter() is called from IRQ context and will call
perf_counter_disable(), however perf_counter_disable() uses
smp_call_function_single() which doesn't fancy being used with
IRQs disabled due to IPI deadlocks.

Fix this by making it use the local __perf_counter_disable()
call and teaching the counter_sched_out() code about pending
disables as well.

This should cover the case where a counter migrates before the
pending queue gets processed.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Corey J Ashford <cjashfor@us.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: stephane eranian <eranian@googlemail.com>
LKML-Reference: <20090813103655.244097721@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf: Rework/fix the whole read vs group stuff
Peter Zijlstra [Thu, 13 Aug 2009 09:47:53 +0000]
perf: Rework/fix the whole read vs group stuff

Replace PERF_SAMPLE_GROUP with PERF_SAMPLE_READ and introduce
PERF_FORMAT_GROUP to deal with group reads in a more generic
way.

This allows you to get group reads out of read() as well.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Corey J Ashford <cjashfor@us.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: stephane eranian <eranian@googlemail.com>
LKML-Reference: <20090813103655.117411814@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf_counter: Fix swcounter context invariance
Peter Zijlstra [Thu, 13 Aug 2009 07:51:55 +0000]
perf_counter: Fix swcounter context invariance

perf_swcounter_is_counting() uses a lock, which means we cannot
use swcounters from NMI or when holding that particular lock,
this is unintended.

The below removes the lock, this opens up race window, but not
worse than the swcounters already experience due to RCU
traversal of the context in perf_swcounter_ctx_event().

This also fixes the hard lockups while opening a lockdep
tracepoint counter.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: stephane eranian <eranian@googlemail.com>
Cc: Corey J Ashford <cjashfor@us.ibm.com>
LKML-Reference: <1250149915.10001.66.camel@twins>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf report: Don't show unresolved DSOs and symbols when -S/-d is used
Arnaldo Carvalho de Melo [Wed, 12 Aug 2009 21:19:57 +0000]
perf report: Don't show unresolved DSOs and symbols when -S/-d is used

We're interested in just those symbols/DSOs, so filter out the
unresolved ones.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20090812211957.GE3495@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf tools: Add a general option to enable raw sample records
Frederic Weisbecker [Thu, 13 Aug 2009 08:27:19 +0000]
perf tools: Add a general option to enable raw sample records

While we can enable the perf sample records per tracepoint
counter, we may also want to enable this option for every
tracepoint counters to open, so that we don't need to add a
:record flag for all of them.

Add the -R, --raw-samples options for this purpose.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1250152039-7284-2-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf tools: Add a per tracepoint counter attribute to get raw sample
Frederic Weisbecker [Thu, 13 Aug 2009 08:27:18 +0000]
perf tools: Add a per tracepoint counter attribute to get raw sample

Add a new flag field while opening a tracepoint perf counter:

-e tracepoint_subsystem:tracepoint_name:flags

This is intended to be generic although for now it only supports the
r[e[c[o[r[d]]]]] flag:

./perf record -e workqueue:workqueue_insertion:record
./perf record -e workqueue:workqueue_insertion:r

will have the same effect: enabling the raw samples record for
the given tracepoint counter.

In the future, we may want to support further flags, separated
by commas.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <1250152039-7284-1-git-send-email-fweisbec@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf_counter: Provide hw_perf_counter_setup_online() APIs
Ingo Molnar [Thu, 13 Aug 2009 08:13:22 +0000]
perf_counter: Provide hw_perf_counter_setup_online() APIs

Provide weak aliases for hw_perf_counter_setup_online(). This is
used by the BTS patches (for v2.6.32), but it interacts with
fixes so propagate this upstream. (it has no effect as of yet)

Also export perf_counter_output() to architecture code.

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf list: Fix large list output by using the pager
Arnaldo Carvalho de Melo [Wed, 12 Aug 2009 17:44:59 +0000]
perf list: Fix large list output by using the pager

When /sys/kernel/debug is mounted the list can be imense, so
use the pager like the other tools.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20090812174459.GB3495@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agosh: fix i2c init order on ap325rxa V2
Magnus Damm [Fri, 7 Aug 2009 03:52:18 +0000]
sh: fix i2c init order on ap325rxa V2

Convert the AP325RXA board code to register devices at
arch_initcall() time instead of device_initcall(). This
fix unbreaks pcf8563 RTC driver support.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

10 years agosh: fix i2c init order on Migo-R V2
Magnus Damm [Thu, 13 Aug 2009 02:39:02 +0000]
sh: fix i2c init order on Migo-R V2

Convert the Migo-R board code to register devices at
arch_initcall() time instead of __initcall(). This fix
unbreaks migor_ts touch screen driver support.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

10 years agosh: convert processor device setup functions to arch_initcall()
Magnus Damm [Wed, 22 Jul 2009 15:14:29 +0000]
sh: convert processor device setup functions to arch_initcall()

Convert the processor platform device setup
functions from __initcall() and sometimes
device_initcall() to arch_initcall().

This makes sure that the platform devices are
registered a bit earlier so the devices are
available when drivers register using initcall
levels earlier than device_initcall().

A good example is platform devices needed by
i2c-sh_mobile.c which registers a bit earlier
using subsys_initcall().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

10 years agomd: allow upper limit for resync/reshape to be set when array is read-only
NeilBrown [Thu, 13 Aug 2009 00:41:50 +0000]
md: allow upper limit for resync/reshape to be set when array is read-only

Normally we only allow the upper limit for a reshape to be decreased
when the array not performing a sync/recovery/reshape, otherwise there
could be races.  But if an array is part-way through a reshape when it
is assembled the reshape is started immediately leaving no window
to set an upper bound.

If the array is started read-only, the reshape will be suspended until
the array becomes writable, so that provides a window during which it
is perfectly safe to reduce the upper limit of a reshape.

So: allow the upper limit (sync_max) to be reduced even if the reshape
thread is running, as long as the array is still read-only.

Signed-off-by: NeilBrown <neilb@suse.de>

10 years agomd/raid5: Properly remove excess drives after shrinking a raid5/6
NeilBrown [Thu, 13 Aug 2009 00:41:49 +0000]
md/raid5: Properly remove excess drives after shrinking a raid5/6

We were removing the drives, from the array, but not
removing symlinks from /sys/.... and not marking the device
as having been removed.

Signed-off-by: NeilBrown <neilb@suse.de>

10 years agomd/raid5: make sure a reshape restarts at the correct address.
NeilBrown [Thu, 13 Aug 2009 00:13:00 +0000]
md/raid5: make sure a reshape restarts at the correct address.

This "if" don't allow for the possibility that the number of devices
doesn't change, and so sector_nr isn't set correctly in that case.
So change '>' to '>='.

Signed-off-by: NeilBrown <neilb@suse.de>

10 years agomd/raid5: allow new reshape modes to be restarted in the middle.
NeilBrown [Thu, 13 Aug 2009 00:06:24 +0000]
md/raid5: allow new reshape modes to be restarted in the middle.

md/raid5 doesn't allow a reshape to restart if it involves writing
over the same part of disk that it would be reading from.
This happens at the beginning of a reshape that increases the number
of devices, at the end of a reshape that decreases the number of
devices, and continuously for a reshape that does not change the
number of devices.

The current code is correct for the "increase number of devices"
case as the critical section at the start is handled by userspace
performing a backup.

It does not work for reducing the number of devices, or the
no-change case.
For 'reducing', we need to invert the test.  For no-change we cannot
really be sure things will be safe, so simply require the array
to be read-only, which is how the user-space code which carefully
starts such arrays works.

Signed-off-by: NeilBrown <neilb@suse.de>

10 years agomd: never advance 'events' counter by more than 1.
NeilBrown [Wed, 12 Aug 2009 23:54:02 +0000]
md: never advance 'events' counter by more than 1.

When assembling arrays, md allows two devices to have different event
counts as long as the difference is only '1'.  This is to cope with
a system failure between updating the metadata on two difference
devices.

However there are currently times when we update the event count by
2.  This was done to keep the event count even when the array is clean
and odd when it is dirty, which allows us to avoid writing common
update to spare devices and so allow those spares to go to sleep.

This is bad for the above reason.  So change it to never increase by
two.  This means that the alignment between 'odd/even' and
'clean/dirty' might take a little longer to attain, but that is only a
small cost.  The spares will get a few more updates but that will
still be spared (;-) most updates and can still go to sleep.

Prior to this patch there was a small chance that after a crash an
array would fail to assemble due to the overly large event count
mismatch.

Signed-off-by: NeilBrown <neilb@suse.de>

10 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Wed, 12 Aug 2009 16:55:46 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  Remove double removal of blktrace directory

10 years agoRemove double removal of blktrace directory
Alan D. Brunelle [Fri, 7 Aug 2009 16:01:08 +0000]
Remove double removal of blktrace directory

commit fd51d251e4cdb21f68e9dbc4336514d64a105a79
Author: Stefan Raspl <raspl@linux.vnet.ibm.com>
Date:   Tue May 19 09:59:08 2009 +0200

    blktrace: remove debugfs entries on bad path

added in an explicit invocation of debugfs_remove for bt->dir, in
blk_remove_buf_file_callback we are also getting the directory removed. On
occasion I am seeing memory corruption that I have bisected down to
this commit. [The testing involves a (long) series of I/O benchmarks
with blktrace invoked around the actual runs.] I believe that this
committed patch is correct, but the problem actually lies in the code
in blk_remove_buf_file_callback.

With this patch I am able to consistently get complete runs whereas
previously I could not get a single run to complete.

The first part of the patch simply moves the debugfs_remove below the
relay_close: the relay_close call will remove files under bt->dir, and
so we should not remove the directory until all the files we created
have been removed. (Note: This is not sufficient to fix the problem -
the file system code has ref counts on the directoy, so our invocation
does not cause the directory to actually be removed. Nonetheless, we
should not rely upon that feature.)

Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

10 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Wed, 12 Aug 2009 15:49:35 +0000]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: fix spin_is_locked assert on uni-processor builds
  xfs: check for dinode realtime flag corruption
  use XFS_CORRUPTION_ERROR in xfs_btree_check_sblock
  xfs: switch to NOFS allocation under i_lock in xfs_attr_rmtval_get
  xfs: switch to NOFS allocation under i_lock in xfs_readlink_bmap
  xfs: switch to NOFS allocation under i_lock in xfs_attr_rmtval_set
  xfs: switch to NOFS allocation under i_lock in xfs_buf_associate_memory
  xfs: switch to NOFS allocation under i_lock in xfs_dir_cilookup_result
  xfs: switch to NOFS allocation under i_lock in xfs_da_buf_make
  xfs: switch to NOFS allocation under i_lock in xfs_da_state_alloc
  xfs: switch to NOFS allocation under i_lock in xfs_getbmap
  xfs: avoid memory allocation under m_peraglock in growfs code

10 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Wed, 12 Aug 2009 15:32:47 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Don't override ADC definitions for ALC codecs
  ALSA: hda - Add missing vmaster initialization for ALC269
  ASoC: Add missing DRV_NAME definitions for fsl/* drivers

10 years agoMerge branch 'zerolen' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6
Linus Torvalds [Wed, 12 Aug 2009 15:29:32 +0000]
Merge branch 'zerolen' of git://git./linux/kernel/git/jgarzik/misc-2.6

* 'zerolen' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6:
  Remove zero-length file drivers/mtd/maps/sbc8240.c

10 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Wed, 12 Aug 2009 15:24:17 +0000]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ahci: add workaround for on-board 5723s on some gigabyte boards
  ahci: Soften up the dmesg on SB600 PMP softreset failure recovery
  Documentation/kernel-parameters.txt: document libata's ignore_hpa option
  sata_nv: MSI support, disabled by default
  libata: OCZ Vertex can't do HPA
  pata_atiixp: fix second channel support
  pata_at91: fix resource release

10 years agoNFS: Fix an O_DIRECT Oops...
Trond Myklebust [Wed, 12 Aug 2009 13:12:30 +0000]
NFS: Fix an O_DIRECT Oops...

We can't call nfs_readdata_release()/nfs_writedata_release() without
first initialising and referencing args.context. Doing so inside
nfs_direct_read_schedule_segment()/nfs_direct_write_schedule_segment()
causes an Oops.

We should rather be calling nfs_readdata_free()/nfs_writedata_free() in
those cases.

Looking at the O_DIRECT code, the "struct nfs_direct_req" is already
referencing the nfs_open_context for us. Since the readdata and writedata
structures carry a reference to that, we can simplify things by getting rid
of the extra nfs_open_context references, so that we can replace all
instances of nfs_readdata_release()/nfs_writedata_release().

Reported-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

10 years agoperf_counter, x86: Fix/improve apic fallback
Ingo Molnar [Tue, 11 Aug 2009 08:40:08 +0000]
perf_counter, x86: Fix/improve apic fallback

Johannes Stezenbach reported that his Pentium-M based
laptop does not have the local APIC enabled by default,
and hence perfcounters do not get initialized.

Add a fallback for this case: allow non-sampled counters
and return with an error on sampled counters. This allows
'perf stat' to work out of box - and allows 'perf top'
and 'perf record' to fall back on a hrtimer based sampling
method.

( Passing 'lapic' on the boot line will allow hardware
  sampling to occur - but if the APIC is disabled
  permanently by the hardware then this fallback still
  allows more systems to use perfcounters. )

Also decouple perfcounter support from X86_LOCAL_APIC.

-v2: fix typo breaking counters on all other systems ...

Reported-by: Johannes Stezenbach <js@sig21.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf record: Add missing -C option support for specifying profile cpu
Jens Axboe [Wed, 12 Aug 2009 09:18:01 +0000]
perf record: Add missing -C option support for specifying profile cpu

perf top supports a -C for setting the profile CPU, but perf
record does not. This adds the same option for perf record,
allowing the user to specify a specific target profile CPU.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090812091801.GC12579@kernel.dk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf tools: Fix dso__new handle() to handle deleted DSOs
Arnaldo Carvalho de Melo [Tue, 11 Aug 2009 20:04:36 +0000]
perf tools: Fix dso__new handle() to handle deleted DSOs

It is better than showing the map addr, this way at least we
know that we can't get the symtabs because the DSO was deleted
(system update) while an app still used such DSO.

Yeah, don't do that, but if you do, you'll figure it out
quicker this way.

[acme@doppio linux-2.6-tip]$ perf report | head -15
 # Samples: 3796
 #
 # Overhead  Command                                                        Shared Object  Symbol
 # ........  .......  ...................................................................  ......
 #
    23.55%   pidgin  /lib64/libglib-2.0.so.0.2000.4.#prelink#.Pd98lu (deleted)            [.] 0x00000000038844
    21.55%   pidgin  /lib64/libpthread-2.10.1.so.#prelink#.AFwK8Q (deleted)               [.] 0x0000000000a42d
    10.85%   pidgin  [kernel]                                                             [.] vread_hpet
     7.85%   pidgin  /lib64/libgobject-2.0.so.0.2000.4.#prelink#.o1vpU7 (deleted)         [.] 0x00000000014de8
     3.35%   pidgin  /lib64/libc-2.10.1.so (deleted)                                      [.] 0x0000000007a875
     3.19%   pidgin  /lib64/libdbus-1.so.3.4.0.#prelink#.6mwgZP (deleted)                 [.] 0x0000000001d254
     3.06%   pidgin  /usr/lib64/libgtk-x11-2.0.so.0.1600.5.#prelink#.511hAl (deleted)     [.] 0x000000002334e7
     2.90%   pidgin  /usr/lib64/libgdk-x11-2.0.so.0.1600.5.#prelink#.5qlMo1 (deleted)     [.] 0x00000000037b2d
     1.84%   pidgin  [kernel]                                                             [k] do_sys_poll
     1.45%   pidgin  /usr/lib64/libX11.so.6.2.0.#prelink#.iR59Rx (deleted)                [.] 0x0000000004c751
[acme@doppio linux-2.6-tip]$

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Luis Claudio R. Gonçalves <lclaudio@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090811200436.GA3478@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf tools: Fix fallback to cplus_demangle() when bfd_demangle() is not available
Arnaldo Carvalho de Melo [Tue, 11 Aug 2009 19:22:11 +0000]
perf tools: Fix fallback to cplus_demangle() when bfd_demangle() is not available

In old binutils we can't access bfd_demangle(), use
cplus_demangle() just like oprofile.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Luis Claudio R. Gonçalves <lclaudio@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090811192211.GG18061@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf report: Show the tid too in -D
Arnaldo Carvalho de Melo [Tue, 11 Aug 2009 19:21:38 +0000]
perf report: Show the tid too in -D

This made it easier to find the firefox threading related
bug.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
LKML-Reference: <20090811192138.GE18061@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoperf record: Fix .tid and .pid fill-in when synthesizing events
Arnaldo Carvalho de Melo [Tue, 11 Aug 2009 19:22:00 +0000]
perf record: Fix .tid and .pid fill-in when synthesizing events

Noticed when trying to record events for a firefox thread. We
were synthesizing both .tid and .pid with the pid passed via
--pid.

Fix it by reading /proc/PID/status and getting the tgid
to use in .pid, .tid gets the specified "pid".

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <20090811192200.GF18061@ghostprotocols.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoRemove zero-length file drivers/mtd/maps/sbc8240.c
Jeff Garzik [Wed, 12 Aug 2009 10:29:57 +0000]
Remove zero-length file drivers/mtd/maps/sbc8240.c

It was "deleted" in commit 2bf961b7ccd69e108ac435c67e2b0522b403c578

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agoahci: add workaround for on-board 5723s on some gigabyte boards
Tejun Heo [Tue, 4 Aug 2009 05:30:08 +0000]
ahci: add workaround for on-board 5723s on some gigabyte boards

Some gigabytes have on-board SIMG5723s connected to JMB ahcis.  These
are used to implement hardware raid.  Unfortunately some firmware
revisions on these 5723s don't bring the link down when all the
downstream ports are unoccupied while not responding to reset protocol
which makes libata think that there's device attached to the port but
is not responding and retry.  This results in painfully wrong boot
detection time for these ports when they're empty.

This patch quirks those boards such that ahci gives up after the
initial timeout.  Combined with parallel probing, this gives quick
enough probing and also is safe because SIMG5723 will respond to the
first try if any of the downstream ports is occupied.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Marc Bowes <marcbowes@gmail.com>
Reported-by: Nicolas Mailhot <Nicolas.Mailhot@LaPoste.net>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agoahci: Soften up the dmesg on SB600 PMP softreset failure recovery
Shane Huang [Wed, 5 Aug 2009 02:10:41 +0000]
ahci: Soften up the dmesg on SB600 PMP softreset failure recovery

Too strong words led to spurious bug reports: Novell bugzilla #527748,
RedHat bugzilla #468800. This patch is used to soften up the dmesg on
SB600 PMP softreset failure recovery, so as to remove the scariness and
concern from community.

Reported-by: pgnet Dev <pgnet.dev@gmail.com>
Signed-off-by: Shane Huang <shane.huang@amd.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agoDocumentation/kernel-parameters.txt: document libata's ignore_hpa option
Michael Prokop [Wed, 5 Aug 2009 22:14:10 +0000]
Documentation/kernel-parameters.txt: document libata's ignore_hpa option

By default the kernel honors the HPA (host protected area) of hard
drives.  Using libata's ignore_hpa module option it's possible to
change this behaviour.

Document usage and options of libata.ignore_hpa in
Documentation/kernel-parameters.txt.

Signed-off-by: Michael Prokop <mika@grml.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agosata_nv: MSI support, disabled by default
Tony Vroon [Wed, 5 Aug 2009 23:50:09 +0000]
sata_nv: MSI support, disabled by default

At least the nVidia MCP55 controller quite happily supports MSI.
This adds an option to use it. It is disabled by default.
As per feedback by Robert Hancock, it will honour the user
request as the kernel will not enable MSI where the controller
or the specific system configuration do not support it.

Signed-off-by: Tony Vroon <tony@linx.net>
Cc: Robert Hancock <hancockrwd@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agolibata: OCZ Vertex can't do HPA
Tejun Heo [Thu, 6 Aug 2009 16:59:15 +0000]
libata: OCZ Vertex can't do HPA

OCZ Vertex SSD can't do HPA and not in a usual way.  It reports HPA,
allows unlocking but then fails all IOs which fall in the unlocked
area.  Quirk it so that HPA unlocking is not used for the device.

Reported by Daniel Perup in bnc#522414.

 https://bugzilla.novell.com/show_bug.cgi?id=522414

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Daniel Perup <probe@spray.se>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agopata_atiixp: fix second channel support
Bartlomiej Zolnierkiewicz [Thu, 6 Aug 2009 15:47:05 +0000]
pata_atiixp: fix second channel support

PIO and MWDMA timings are never programmed for the second channel
because timing registers are treated as 16-bit long ones.

The bug is an attixp -> pata_atiixp regression and goes back to:

commit 669a5db411d85a14f86cd92bc16bf7ab5b8aa235
Author: Jeff Garzik <jeff@garzik.org>
Date:   Tue Aug 29 18:12:40 2006 -0400

    [libata] Add a bunch of PATA drivers.

Cc: Krystian Juskowiak <jusko@tlen.pl>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Borislav Petkov <bbpetkov@yahoo.de>
Cc: Robert Hancock <hancockrwd@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agopata_at91: fix resource release
Tejun Heo [Fri, 7 Aug 2009 02:15:20 +0000]
pata_at91: fix resource release

Julias Lawall discovered that pata_at91 wasn't freeing a memory region
allocated with kzalloc() on init failure paths.  Upon review,
pata_at91 also seems to be doing unnecessary explicit resource
releases for managed resources too.  Convert memory allocation to
managed one and drop unnecessary explicit resource releases.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Julia Lawall <julia@diku.dk>
Cc: Sergey Matyukevich <geomatsi@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

10 years agox86: Fix oops in identify_cpu() on CPUs without CPUID
Ondrej Zary [Tue, 11 Aug 2009 18:00:11 +0000]
x86: Fix oops in identify_cpu() on CPUs without CPUID

Kernel is broken for x86 CPUs without CPUID since 2.6.28. It
crashes with NULL pointer dereference in identify_cpu():

766        generic_identify(c);
767
768-->     if (this_cpu->c_identify)
769               this_cpu->c_identify(c);

this_cpu is NULL. This is because it's only initialized in
get_cpu_vendor() function, which is not called if the CPU has
no CPUID instruction.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
LKML-Reference: <200908112000.15993.linux@rainbow-software.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

10 years agoxfs: fix spin_is_locked assert on uni-processor builds
Christoph Hellwig [Mon, 10 Aug 2009 14:32:44 +0000]
xfs: fix spin_is_locked assert on uni-processor builds

Without SMP or preemption spin_is_locked always returns false,
so we can't do an assert with it.  Instead use assert_spin_locked,
which does the right thing on all builds.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Reported-by: Johannes Engel <jcnengel@googlemail.com>
Tested-by: Johannes Engel <jcnengel@googlemail.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: check for dinode realtime flag corruption
Christoph Hellwig [Mon, 10 Aug 2009 14:32:18 +0000]
xfs: check for dinode realtime flag corruption

Ramon tested XFS with a modified version of fsfuzzer and hit a NULL
pointer dereference in __xfs_get_blocks due to the RT device target
pointer being NULL.

To fix this reject inode with the realtime bit set on a a filesystem
without an RT subvolume during inode read.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Reported-by: Ramon de Carvalho Valle <ramon@risesecurity.org>
Tested-by: Ramon de Carvalho Valle <ramon@risesecurity.org>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agouse XFS_CORRUPTION_ERROR in xfs_btree_check_sblock
Eric Sandeen [Mon, 20 Jul 2009 15:52:15 +0000]
use XFS_CORRUPTION_ERROR in xfs_btree_check_sblock

In Red Hat Bug 512552
 - Can't write to XFS mount during raid5 resync

a user ran into corruption while resyncing a raid, and we failed
a consistency test, but didn't get much more info; it'd be nice
to call XFS_CORRUPTION_ERROR here so we can see the buffer
contents.

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: switch to NOFS allocation under i_lock in xfs_attr_rmtval_get
Christoph Hellwig [Sat, 18 Jul 2009 22:15:01 +0000]
xfs: switch to NOFS allocation under i_lock in xfs_attr_rmtval_get

xfs_attr_rmtval_get is always called with i_lock held, but i_lock is taken
in reclaim context so all allocations under it must avoid recursions into
the filesystem.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: switch to NOFS allocation under i_lock in xfs_readlink_bmap
Christoph Hellwig [Sat, 18 Jul 2009 22:15:00 +0000]
xfs: switch to NOFS allocation under i_lock in xfs_readlink_bmap

xfs_readlink_bmap is called with i_lock held, but i_lock is taken in
reclaim context so all allocations under it must avoid recursions into
the filesystem.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: switch to NOFS allocation under i_lock in xfs_attr_rmtval_set
Christoph Hellwig [Sat, 18 Jul 2009 22:14:59 +0000]
xfs: switch to NOFS allocation under i_lock in xfs_attr_rmtval_set

xfs_attr_rmtval_set is always called with i_lock held, and i_lock is taken
in reclaim context so all allocations under it must avoid recursions into
the filesystem.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: switch to NOFS allocation under i_lock in xfs_buf_associate_memory
Christoph Hellwig [Sat, 18 Jul 2009 22:14:58 +0000]
xfs: switch to NOFS allocation under i_lock in xfs_buf_associate_memory

xfs_buf_associate_memory is used for setting up the spare buffer for the
log wrap case in xlog_sync which can happen under i_lock when called from
xfs_fsync. The i_lock mutex is taken in reclaim context so all allocations
under it must avoid recursions into the filesystem.  There are a couple
more uses of xfs_buf_associate_memory in the log recovery code that are
also affected by this, but I'd rather keep the code simple than passing on
a gfp_mask argument.  Longer term we should just stop requiring the memoery
allocation in xlog_sync by some smaller rework of the buffer layer.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: switch to NOFS allocation under i_lock in xfs_dir_cilookup_result
Christoph Hellwig [Sat, 18 Jul 2009 22:14:57 +0000]
xfs: switch to NOFS allocation under i_lock in xfs_dir_cilookup_result

xfs_dir_cilookup_result is always called with i_lock held, but i_lock is taken
in reclaim context so all allocations under it must avoid recursions into the
filesystem.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: switch to NOFS allocation under i_lock in xfs_da_buf_make
Christoph Hellwig [Sat, 18 Jul 2009 22:14:56 +0000]
xfs: switch to NOFS allocation under i_lock in xfs_da_buf_make

i_lock is taken in the reclaim context so all allocations under it
must avoid recursions into the filesystem.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: switch to NOFS allocation under i_lock in xfs_da_state_alloc
Christoph Hellwig [Sat, 18 Jul 2009 22:14:55 +0000]
xfs: switch to NOFS allocation under i_lock in xfs_da_state_alloc

xfs_da_state_alloc is always called with i_lock held, but i_lock is taken in
reclaim context so all allocations under it must avoid recursions into the
filesystem.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: switch to NOFS allocation under i_lock in xfs_getbmap
Christoph Hellwig [Sat, 18 Jul 2009 22:14:54 +0000]
xfs: switch to NOFS allocation under i_lock in xfs_getbmap

xfs_getbmap allocates memory with i_lock held, but i_lock is taken in
reclaim context so all allocations under it must avoid recursions into
the filesystem.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoxfs: avoid memory allocation under m_peraglock in growfs code
Christoph Hellwig [Sat, 18 Jul 2009 22:14:53 +0000]
xfs: avoid memory allocation under m_peraglock in growfs code

Allocate the memory for the larger m_perag array before taking the
per-AG lock as the per-AG lock can be taken under the i_lock which
can be taken from reclaim context.

Reported by the new reclaim context tracing in lockdep.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Signed-off-by: Felix Blyakher <felixb@sgi.com>

10 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Wed, 12 Aug 2009 06:05:20 +0000]
Merge branch 'fix/hda' into for-linus

* fix/hda:
  ALSA: hda - Don't override ADC definitions for ALC codecs
  ALSA: hda - Add missing vmaster initialization for ALC269