Li Zhong [Tue, 28 Jan 2014 12:22:42 +0000 (17:52 +0530)]
powerpc/mm: Fix compile error of pgtable-ppc64.h
It seems that forward declaration couldn't work well with typedef, use
struct spinlock directly to avoiding following build errors:
In file included from include/linux/spinlock.h:81,
from include/linux/seqlock.h:35,
from include/linux/time.h:5,
from include/uapi/linux/timex.h:56,
from include/linux/timex.h:56,
from include/linux/sched.h:17,
from arch/powerpc/kernel/asm-offsets.c:17:
include/linux/spinlock_types.h:76: error: redefinition of typedef 'spinlock_t'
/root/linux-next/arch/powerpc/include/asm/pgtable-ppc64.h:563: note: previous declaration of 'spinlock_t' was here
Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Merge remote-tracking branch 'scott/next' into next
<<
This contains a fix for a chroma_defconfig build break that was
introduced by e6500 tablewalk support, and a device tree binding patch
that missed the previous pull request due to some last-minute polishing.
>>
Merge remote-tracking branch 'agust/next' into next
<<
Switch mpc512x to the common clock framework and adapt mpc512x
drivers to use the new clock driver. Old PPC_CLOCK code is
removed entirely since there are no users any more.
>>
Linus Torvalds [Tue, 28 Jan 2014 19:02:23 +0000 (11:02 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull ceph updates from Sage Weil:
"This is a big batch. From Ilya we have:
- rbd support for more than ~250 mapped devices (now uses same scheme
that SCSI does for device major/minor numbering)
- crush updates for new mapping behaviors (will be needed for coming
erasure coding support, among other things)
- preliminary support for tiered storage pools
There is also a big series fixing a pile cephfs bugs with clustered
MDSs from Yan Zheng, ACL support for cephfs from Guangliang Zhao, ceph
fscache improvements from Li Wang, improved behavior when we get
ENOSPC from Josh Durgin, some readv/writev improvements from
Majianpeng, and the usual mix of small cleanups"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (76 commits)
ceph: cast PAGE_SIZE to size_t in ceph_sync_write()
ceph: fix dout() compile warnings in ceph_filemap_fault()
libceph: support CEPH_FEATURE_OSD_CACHEPOOL feature
libceph: follow redirect replies from osds
libceph: rename ceph_osd_request::r_{oloc,oid} to r_base_{oloc,oid}
libceph: follow {read,write}_tier fields on osd request submission
libceph: add ceph_pg_pool_by_id()
libceph: CEPH_OSD_FLAG_* enum update
libceph: replace ceph_calc_ceph_pg() with ceph_oloc_oid_to_pg()
libceph: introduce and start using oid abstraction
libceph: rename MAX_OBJ_NAME_SIZE to CEPH_MAX_OID_NAME_LEN
libceph: move ceph_file_layout helpers to ceph_fs.h
libceph: start using oloc abstraction
libceph: dout() is missing a newline
libceph: add ceph_kv{malloc,free}() and switch to them
libceph: support CEPH_FEATURE_EXPORT_PEER
ceph: add imported caps when handling cap export message
ceph: add open export target session helper
ceph: remove exported caps when handling cap import message
ceph: handle session flush message
...
Linus Torvalds [Tue, 28 Jan 2014 18:57:14 +0000 (10:57 -0800)]
Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd
Pull exofs and ore fixes from Boaz Harrosh:
"The main fix here, the first patch, is also destined for -stable. The
rest is small trivia and cosmetics. The ORE patches effect both exofs
and pnfs-objects very reproducible bugs"
[ ORE is "object raid engine", used by exofs and pnfs - Linus ]
* 'for-linus' of git://git.open-osd.org/linux-open-osd:
exofs: Print less in r4w
exofs: Allow corrupted directory entry to be empty file
exofs: Allow O_DIRECT open
ore: Don't crash on NULL bio in _clear_bio
ore: Fix wrong math in allocation of per device BIO
Ilya Dryomov [Tue, 28 Jan 2014 16:29:29 +0000 (18:29 +0200)]
ceph: fix dout() compile warnings in ceph_filemap_fault()
PAGE_CACHE_SIZE is unsigned long on all architectures, however size_t
is either unsigned int or unsigned long. Rather than change format
strings, cast PAGE_CACHE_SIZE to size_t to be in line with dout()s in
ceph_page_mkwrite().
Linus Torvalds [Tue, 28 Jan 2014 17:04:11 +0000 (09:04 -0800)]
Merge tag 'microblaze-3.14-rc1' of git://git.monstr.eu/linux-2.6-microblaze
Pull microblaze patches from Michal Simek:
- add CCF support
- fix BS=0 compilation
- wire up defconfig
- some minor cleanups and fixes
* tag 'microblaze-3.14-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
microblaze: Add missing v8.50.a version
microblaze: Fix missing bracket in printk
microblaze: Fix compilation error for BS=0
microblaze: Disable stack protection from bootloader
microblaze: Define read/write{b,w,l}_relaxed MMIO
microblaze: timer: Do not initialized system timer twice
microblaze: timer: Use generic sched_clock implementation
microblaze: Add NOTES section to linker script
microblaze: Add support for CCF
microblaze: Simplify fcpu helper function
microblaze/uapi: Use Kbuild logic to include <asm-generic/types.h>
microblaze: Remove duplicate declarations of _stext[] and _etext[]
microblaze: Remove _fdt_start casts
microblaze: Wire up defconfig to mmu_defconfig
Linus Torvalds [Tue, 28 Jan 2014 17:02:24 +0000 (09:02 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 patches from Martin Schwidefsky:
"A new binary interface to be able to query and modify the LPAR
scheduler weight and cap settings. Some improvements for the hvc
terminal over iucv and a couple of bux fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/hypfs: add interface for diagnose 0x304
s390: wire up sys_sched_setattr/sys_sched_getattr
s390/uapi: fix struct statfs64 definition
s390/uaccess: remove dead extern declarations, make functions static
s390/uaccess: test if current->mm is set before walking page tables
s390/zfcpdump: make zfcpdump depend on 64BIT
s390/32bit: fix cmpxchg64
s390/xpram: don't modify module parameters
s390/zcrypt: remove zcrypt kmsg documentation again
s390/hvc_iucv: Automatically assign free HVC terminal devices
s390/hvc_iucv: Display connection details through device attributes
s390/hvc_iucv: fix sparse warning
s390/vmur: Link parent CCW device during UR device creation
Linus Torvalds [Tue, 28 Jan 2014 16:54:16 +0000 (08:54 -0800)]
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 update from Ted Ts'o:
"Bug fixes and cleanups for ext4. We also enable the punch hole
functionality for bigalloc file systems"
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: delete "set but not used" variables
ext4: don't pass freed handle to ext4_walk_page_buffers
ext4: avoid clearing beyond i_blocks when truncating an inline data file
ext4: ext4_inode_is_fast_symlink should use EXT4_CLUSTER_SIZE
ext4: fix a typo in extents.c
ext4: use %pd printk specificer
ext4: standardize error handling in ext4_da_write_inline_data_begin()
ext4: retry allocation when inline->extent conversion failed
ext4: enable punch hole for bigalloc
Linus Torvalds [Tue, 28 Jan 2014 16:46:44 +0000 (08:46 -0800)]
Merge tag 'nfs-for-3.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Highlights include:
- stable fix for an infinite loop in RPC state machine
- stable fix for a use after free situation in the NFSv4 trunking discovery
- stable fix for error handling in the NFSv4 trunking discovery
- stable fix for the page write update code
- stable fix for the NFSv4.1 mount time security negotiation
- stable fix for the NFSv4 open code.
- O_DIRECT locking fixes
- fix an Oops in the pnfs file commit code
- RPC layer needs finer grained handling of connection errors
- more RPC GSS upcall fixes"
* tag 'nfs-for-3.14-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (30 commits)
pnfs: Proper delay for NFS4ERR_RECALLCONFLICT in layout_get_done
pnfs: fix BUG in filelayout_recover_commit_reqs
nfs4: fix discover_server_trunking use after free
NFSv4.1: Handle errors correctly in nfs41_walk_client_list
nfs: always make sure page is up-to-date before extending a write to cover the entire page
nfs: page cache invalidation for dio
nfs: take i_mutex during direct I/O reads
nfs: merge nfs_direct_write into nfs_file_direct_write
nfs: merge nfs_direct_read into nfs_file_direct_read
nfs: increment i_dio_count for reads, too
nfs: defer inode_dio_done call until size update is done
nfs: fix size updates for aio writes
nfs4.1: properly handle ENOTSUP in SECINFO_NO_NAME
NFSv4.1: Fix a race in nfs4_write_inode
NFSv4.1: Don't trust attributes if a pNFS LAYOUTCOMMIT is outstanding
point to the right include file in a comment (left over from a9004abc3)
NFS: dprintk() should not print negative fileids and inode numbers
nfs: fix dead code of ipv6_addr_scope
sunrpc: Fix infinite loop in RPC state machine
SUNRPC: Add tracepoint for socket errors
...
Linus Torvalds [Tue, 28 Jan 2014 16:38:04 +0000 (08:38 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs updates from Al Viro:
"Assorted stuff; the biggest pile here is Christoph's ACL series. Plus
assorted cleanups and fixes all over the place...
There will be another pile later this week"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (43 commits)
__dentry_path() fixes
vfs: Remove second variable named error in __dentry_path
vfs: Is mounted should be testing mnt_ns for NULL or error.
Fix race when checking i_size on direct i/o read
hfsplus: remove can_set_xattr
nfsd: use get_acl and ->set_acl
fs: remove generic_acl
nfs: use generic posix ACL infrastructure for v3 Posix ACLs
gfs2: use generic posix ACL infrastructure
jfs: use generic posix ACL infrastructure
xfs: use generic posix ACL infrastructure
reiserfs: use generic posix ACL infrastructure
ocfs2: use generic posix ACL infrastructure
jffs2: use generic posix ACL infrastructure
hfsplus: use generic posix ACL infrastructure
f2fs: use generic posix ACL infrastructure
ext2/3/4: use generic posix ACL infrastructure
btrfs: use generic posix ACL infrastructure
fs: make posix_acl_create more useful
fs: make posix_acl_chmod more useful
...
Linus Torvalds [Tue, 28 Jan 2014 05:17:55 +0000 (21:17 -0800)]
Merge branch 'akpm' (incoming from Andrew)
Merge misc updates from Andrew Morton:
- a few hotfixes
- dynamic-debug updates
- ipc updates
- various other sweepings off the factory floor
* akpm: (31 commits)
firmware/google: drop 'select EFI' to avoid recursive dependency
compat: fix sys_fanotify_mark
checkpatch.pl: check for function declarations without arguments
mm/migrate.c: fix setting of cpupid on page migration twice against normal page
softirq: use const char * const for softirq_to_name, whitespace neatening
softirq: convert printks to pr_<level>
softirq: use ffs() in __do_softirq()
kernel/kexec.c: use vscnprintf() instead of vsnprintf() in vmcoreinfo_append_str()
splice: fix unexpected size truncation
ipc: fix compat msgrcv with negative msgtyp
ipc,msg: document barriers
ipc: delete seq_max field in struct ipc_ids
ipc: simplify sysvipc_proc_open() return
ipc: remove useless return statement
ipc: remove braces for single statements
ipc: standardize code comments
ipc: whitespace cleanup
ipc: change kern_ipc_perm.deleted type to bool
ipc: introduce ipc_valid_object() helper to sort out IPC_RMID races
ipc/sem.c: avoid overflow of semop undo (semadj) value
...
Linus Torvalds [Tue, 28 Jan 2014 05:11:26 +0000 (21:11 -0800)]
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc updates from Ben Herrenschmidt:
"So here's my next branch for powerpc. A bit late as I was on vacation
last week. It's mostly the same stuff that was in next already, I
just added two patches today which are the wiring up of lockref for
powerpc, which for some reason fell through the cracks last time and
is trivial.
The highlights are, in addition to a bunch of bug fixes:
- Reworked Machine Check handling on kernels running without a
hypervisor (or acting as a hypervisor). Provides hooks to handle
some errors in real mode such as TLB errors, handle SLB errors,
etc...
- Support for retrieving memory error information from the service
processor on IBM servers running without a hypervisor and routing
them to the memory poison infrastructure.
- _PAGE_NUMA support on server processors
- 32-bit BookE relocatable kernel support
- FSL e6500 hardware tablewalk support
- A bunch of new/revived board support
- FSL e6500 deeper idle states and altivec powerdown support
You'll notice a generic mm change here, it has been acked by the
relevant authorities and is a pre-req for our _PAGE_NUMA support"
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (121 commits)
powerpc: Implement arch_spin_is_locked() using arch_spin_value_unlocked()
powerpc: Add support for the optimised lockref implementation
powerpc/powernv: Call OPAL sync before kexec'ing
powerpc/eeh: Escalate error on non-existing PE
powerpc/eeh: Handle multiple EEH errors
powerpc: Fix transactional FP/VMX/VSX unavailable handlers
powerpc: Don't corrupt transactional state when using FP/VMX in kernel
powerpc: Reclaim two unused thread_info flag bits
powerpc: Fix races with irq_work
Move precessing of MCE queued event out from syscall exit path.
pseries/cpuidle: Remove redundant call to ppc64_runlatch_off() in cpu idle routines
powerpc: Make add_system_ram_resources() __init
powerpc: add SATA_MV to ppc64_defconfig
powerpc/powernv: Increase candidate fw image size
powerpc: Add debug checks to catch invalid cpu-to-node mappings
powerpc: Fix the setup of CPU-to-Node mappings during CPU online
powerpc/iommu: Don't detach device without IOMMU group
powerpc/eeh: Hotplug improvement
powerpc/eeh: Call opal_pci_reinit() on powernv for restoring config space
powerpc/eeh: Add restore_config operation
...
Linus Torvalds [Tue, 28 Jan 2014 05:03:39 +0000 (21:03 -0800)]
Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Pull powerpc mremap fix from Ben Herrenschmidt:
"This is the patch that I had sent after -rc8 and which we decided to
wait before merging. It's based on a different tree than my -next
branch (it needs some pre-reqs that were in -rc4 or so while my -next
is based on -rc1) so I left it as a separate branch for your to pull.
It's identical to the request I did 2 or 3 weeks back.
This fixes crashes in mremap with THP on powerpc.
The fix however requires a small change in the generic code. It moves
a condition into a helper we can override from the arch which is
harmless, but it *also* slightly changes the order of the set_pmd and
the withdraw & deposit, which should be fine according to Kirill (who
wrote that code) but I agree -rc8 is a bit late...
It was acked by Kirill and Andrew told me to just merge it via powerpc"
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/thp: Fix crash on mremap
Ard Biesheuvel [Tue, 28 Jan 2014 01:07:21 +0000 (17:07 -0800)]
firmware/google: drop 'select EFI' to avoid recursive dependency
The GOOGLE_SMI Kconfig symbol depends on DMI and selects EFI. This
causes problems on other archs when introducing DMI support that depends
on EFI, as it results in a recursive dependency:
arch/arm/Kconfig:1845:error: recursive dependency detected!
arch/arm/Kconfig:1845: symbol DMI depends on EFI
Fix by changing the 'select EFI' to a 'depends on EFI'.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: David Rientjes <rientjes@google.com> Acked-by: Mike Waychison <mikew@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Heiko Carstens [Tue, 28 Jan 2014 01:07:19 +0000 (17:07 -0800)]
compat: fix sys_fanotify_mark
Commit 91c2e0bcae72 ("unify compat fanotify_mark(2), switch to
COMPAT_SYSCALL_DEFINE") added a new unified compat fanotify_mark syscall
to be used by all architectures.
Unfortunately the unified version merges the split mask parameter in a
wrong way: the lower and higher word got swapped.
This was discovered with glibc's tst-fanotify test case.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reported-by: Andreas Krebbel <krebbel@linux.vnet.ibm.com> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Acked-by: "David S. Miller" <davem@davemloft.net> Acked-by: Al Viro <viro@ZenIV.linux.org.uk> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: <stable@vger.kernel.org> [3.10+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Wanpeng Li [Tue, 28 Jan 2014 01:07:17 +0000 (17:07 -0800)]
mm/migrate.c: fix setting of cpupid on page migration twice against normal page
Commit 7851a45cd3f6 ("mm: numa: Copy cpupid on page migration") copies
over the cpupid at page migration time. It is unnecessary to set it
again in alloc_misplaced_dst_page().
Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com> Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Acked-by: Mel Gorman <mgorman@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Chen Gang [Tue, 28 Jan 2014 01:07:13 +0000 (17:07 -0800)]
kernel/kexec.c: use vscnprintf() instead of vsnprintf() in vmcoreinfo_append_str()
vsnprintf() may let 'r' larger than sizeof(buf), in this case, if 'r' is
also less than "vmcoreinfo_max_size - vmcoreinfo_size" (left size of
destination buffer), next memcpy() will read the unexpected addresses.
Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Xiao Guangrong [Tue, 28 Jan 2014 01:07:12 +0000 (17:07 -0800)]
splice: fix unexpected size truncation
@splice_desc.total_len is 32 bit(unsigned int) which is used to store the
size passed from userspace which is 64 bit(size_t) so that the size is
unexpectedly truncated
That means vmsplice can not work if the size passed from userspace is >=
4G, for example, we noticed in vmsplice, splice-reader does not do
anything and splice-writer is waiting for available buffer forever if the
size is 4G
Fix it by extending @splice_desc.total_len to 64 bits as well
Mateusz Guzik [Tue, 28 Jan 2014 01:07:11 +0000 (17:07 -0800)]
ipc: fix compat msgrcv with negative msgtyp
Compat function takes msgtyp argument as u32 and passes it down to
do_msgrcv which results in casting to long, thus the sign is lost and we
get a big positive number instead.
Cast the argument to signed type before passing it down.
Davidlohr Bueso [Tue, 28 Jan 2014 01:07:10 +0000 (17:07 -0800)]
ipc,msg: document barriers
Both expunge_all() and pipeline_send() rely on both a nil msg value and
a full barrier to guarantee the correct ordering when waking up a task.
While its counterpart at the receiving end is well documented for the
lockless recv algorithm, we still need to document these specific
smp_mb() calls.
Davidlohr Bueso [Tue, 28 Jan 2014 01:07:09 +0000 (17:07 -0800)]
ipc: delete seq_max field in struct ipc_ids
This field is only used to reset the ids seq number if it exceeds the
smaller of INT_MAX/SEQ_MULTIPLIER and USHRT_MAX, and can therefore be
moved out of the structure and into its own macro. Since each
ipc_namespace contains a table of 3 pointers to struct ipc_ids we can
save space in instruction text:
text data bss dec hex filename
56232 2348 24 58604 e4ec ipc/built-in.o
56216 2348 24 58588 e4dc ipc/built-in.o-after
Signed-off-by: Davidlohr Bueso <davidlohr@hp.com> Reviewed-by: Jonathan Gonzalez <jgonzalez@linets.cl> Cc: Aswin Chandramouleeswaran <aswin@hp.com> Cc: Rik van Riel <riel@redhat.com> Acked-by: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Manfred Spraul [Tue, 28 Jan 2014 01:07:04 +0000 (17:07 -0800)]
ipc: whitespace cleanup
The ipc code does not adhere the typical linux coding style.
This patch fixes lots of simple whitespace errors.
- mostly autogenerated by
scripts/checkpatch.pl -f --fix \
--types=pointer_location,spacing,space_before_tab
- one manual fixup (keep structure members tab-aligned)
- removal of additional space_before_tab that were not found by --fix
Tested with some of my msg and sem test apps.
Andrew: Could you include it in -mm and move it towards Linus' tree?
Signed-off-by: Manfred Spraul <manfred@colorfullife.com> Suggested-by: Li Bin <huawei.libin@huawei.com> Cc: Joe Perches <joe@perches.com> Acked-by: Rafael Aquini <aquini@redhat.com> Cc: Davidlohr Bueso <davidlohr@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rafael Aquini [Tue, 28 Jan 2014 01:07:01 +0000 (17:07 -0800)]
ipc: introduce ipc_valid_object() helper to sort out IPC_RMID races
After the locking semantics for the SysV IPC API got improved, a couple
of IPC_RMID race windows were opened because we ended up dropping the
'kern_ipc_perm.deleted' check performed way down in ipc_lock(). The
spotted races got sorted out by re-introducing the old test within the
racy critical sections.
This patch introduces ipc_valid_object() to consolidate the way we cope
with IPC_RMID races by using the same abstraction across the API
implementation.
Signed-off-by: Rafael Aquini <aquini@redhat.com> Acked-by: Rik van Riel <riel@redhat.com> Acked-by: Greg Thelen <gthelen@google.com> Reviewed-by: Davidlohr Bueso <davidlohr@hp.com> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Petr Mladek [Tue, 28 Jan 2014 01:07:00 +0000 (17:07 -0800)]
ipc/sem.c: avoid overflow of semop undo (semadj) value
When trying to understand semop code, I found a small mistake in the check
for semadj (undo) value overflow. The new undo value is not stored
immediately and next potential checks are done against the old value.
The failing scenario is not much practical. One semop call has to do more
operations on the same semaphore. Also semval and semadj must have
different values, so there has to be some operations without SEM_UNDO
flag. For example:
Kang Hu [Tue, 28 Jan 2014 01:07:00 +0000 (17:07 -0800)]
init/main.c: remove unused declaractions of mca_init() and sbus_init()
mca_init() no longer exists.
sbus_init() is defined in arch/sparc/kernel/sbus.c and is a subsys_initcall.
both are not needed in main.c any more.
Signed-off-by: Kang Hu <hukangustc@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrey Ryabinin [Tue, 28 Jan 2014 01:06:57 +0000 (17:06 -0800)]
dynamic_debug: remove wrong error message
parse_lineno() returns either negative error code or zero. We don't
need to print something here because if parse_lineno fails it will print
error message.
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com> Cc: Jason Baron <jbaron@akamai.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Xiaowei Hu <xiaowei.hu@oracle.com> Cc: Joe Jin <joe.jin@oracle.com> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Tue, 28 Jan 2014 01:06:55 +0000 (17:06 -0800)]
mm: bring back /sys/kernel/mm
Commit da29bd36224b ("mm/mm_init.c: make creation of the mm_kobj happen
earlier than device_initcall") changed to pure_initcall(mm_sysfs_init).
That's too early: mm_sysfs_init() depends on core_initcall(ksysfs_init)
to have made the kernel_kobj directory "kernel" in which to create "mm".
Make it postcore_initcall(mm_sysfs_init). We could use core_initcall(),
and depend upon Makefile link order kernel/ mm/ fs/ ipc/ security/ ...
as core_initcall(debugfs_init) and core_initcall(securityfs_init) do;
but better not.
Signed-off-by: Hugh Dickins <hughd@google.com> Acked-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
malc [Tue, 28 Jan 2014 01:06:53 +0000 (17:06 -0800)]
Revert "mm/vmalloc: interchage the implementation of vmalloc_to_{pfn,page}"
Revert commit ece86e222db4, which was intended as a small performance
improvement.
Despite the claim that the patch doesn't introduce any functional
changes in fact it does.
The "no page" path behaves different now. Originally, vmalloc_to_page
might return NULL under some conditions, with new implementation it
returns pfn_to_page(0) which is not the same as NULL.
Michael Ellerman [Wed, 15 Jan 2014 07:14:29 +0000 (18:14 +1100)]
powerpc: Implement arch_spin_is_locked() using arch_spin_value_unlocked()
At a glance these are just the inverse of each other. The one subtlety
is that arch_spin_value_unlocked() takes the lock by value, rather than
as a pointer, which is important for the lockref code.
On the other hand arch_spin_is_locked() doesn't really care, so
implement it in terms of arch_spin_value_unlocked().
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Michael Ellerman [Wed, 15 Jan 2014 07:14:28 +0000 (18:14 +1100)]
powerpc: Add support for the optimised lockref implementation
This commit adds the architecture support required to enable the
optimised implementation of lockrefs.
That's as simple as defining arch_spin_value_unlocked() and selecting
the Kconfig option.
We also define cmpxchg64_relaxed(), because the lockref code does not
need the cmpxchg to have barrier semantics.
Using Linus' test case[1] on one system I see a 4x improvement for the
basic enablement, and a further 1.3x for cmpxchg64_relaxed(), for a
total of 5.3x vs the baseline.
v1 (current) version of redirect reply consists of oloc and oid, which
expands to pool, key, nspace, hash and oid. However, server-side code
that would populate anything other than pool doesn't exist yet, and
hence this commit adds support for pool redirects only. To make sure
that future server-side updates don't break us, we decode all fields
and, if any of key, nspace, hash or oid have a non-default value, error
out with "corrupt osd_op_reply ..." message.
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
Ilya Dryomov [Mon, 27 Jan 2014 15:40:19 +0000 (17:40 +0200)]
libceph: follow {read,write}_tier fields on osd request submission
Overwrite ceph_osd_request::r_oloc.pool with read_tier for read ops and
write_tier for write and read+write ops (aka basic tiering support).
{read,write}_tier are part of pg_pool_t since v9. This commit bumps
our pg_pool_t decode compat version from v7 to v9, all new fields
except for {read,write}_tier are ignored.
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
Ilya Dryomov [Mon, 27 Jan 2014 15:40:18 +0000 (17:40 +0200)]
libceph: introduce and start using oid abstraction
In preparation for tiering support, which would require having two
(base and target) object names for each osd request and also copying
those names around, introduce struct ceph_object_id (oid) and a couple
helpers to facilitate those copies and encapsulate the fact that object
name is not necessarily a NUL-terminated string.
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
Ilya Dryomov [Mon, 27 Jan 2014 15:40:18 +0000 (17:40 +0200)]
libceph: start using oloc abstraction
Instead of relying on pool fields in ceph_file_layout (for mapping) and
ceph_pg (for enconding), start using ceph_object_locator (oloc)
abstraction. Note that userspace oloc currently consists of pool, key,
nspace and hash fields, while this one contains only a pool. This is
OK, because at this point we only send (i.e. encode) olocs and never
have to receive (i.e. decode) them.
This makes keeping a copy of ceph_file_layout in every osd request
unnecessary, so ceph_osd_request::r_file_layout field is nuked.
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com> Reviewed-by: Sage Weil <sage@inktank.com>
Linus Torvalds [Mon, 27 Jan 2014 16:22:30 +0000 (08:22 -0800)]
Merge tag 'trace-fixes-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"The first two patches fix the debugfs README file to reflect better
the new features added to 3.14.
The third patch is a minor bugfix to the trace_puts() functions that
will crash the system if a developer adds one before the tracing
system is setup. It also affects trace_printk() if it has no
arguments, as the code will convert it to a trace_puts() as well.
Note, this bug will not affect unmodified kernels, as trace_printk()
and trace_puts() should only be used by developers for testing"
* tag 'trace-fixes-3.14' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Check if tracing is enabled in trace_puts()
tracing: Fix formatting of trace README file
tracing/README: Add event file usage to tracing mini-HOWTO
Linus Torvalds [Mon, 27 Jan 2014 16:17:09 +0000 (08:17 -0800)]
Merge tag 'stable/for-linus-3.14-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb
Pull swiotlb bug-fixes from Konrad Rzeszutek Wilk:
- Don't DoS with 'swiotlb is full' message.
- Documentation update.
* tag 'stable/for-linus-3.14-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb:
swiotlb: Don't DoS us with 'swiotlb buffer is full' (v2)
swiotlb: update format
Linus Torvalds [Mon, 27 Jan 2014 16:15:51 +0000 (08:15 -0800)]
Merge tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm
Pull pwm changes from Thierry Reding:
"The patches for this release cycle include various enhancements
(device tree support, better compile coverage, ...) for existing
drivers. There is a new driver for Atmel SoCs.
Various drivers as well as the sysfs support received minor fixes and
cleanups"
* tag 'pwm/for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: tiecap: Remove duplicate put_sync call
pwm: tiehrpwm: use dev_err() instead of pr_err()
pwm: pxa: remove unnecessary space before tabs
pwm: ep93xx: split module author names
pwm: use seq_puts() instead of seq_printf()
pwm: atmel-pwm: Do not unprepare clock after successful registration
of: Add Atmel PWM controller device tree binding
pwm: atmel-pwm: Add Atmel PWM controller driver
backlight: pwm_bl: Remove error message upon devm_kzalloc() failure
pwm: pca9685: depends on I2C rather than REGMAP_I2C
pwm: renesas-tpu: Enable driver compilation with COMPILE_TEST
pwm: jz4740: Use devm_clk_get()
pwm: jz4740: Pass device to clk_get()
pwm: sysfs: Convert to use ATTRIBUTE_GROUPS macro
pwm: pxa: Add device tree support
Linus Torvalds [Mon, 27 Jan 2014 16:14:08 +0000 (08:14 -0800)]
Merge tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
Pull firewire updates from Stefan Richter:
"IEEE 1394 (FireWire) subsystem changes:
- make remote debugging over 1394 a runtime option instead of a
buildtime option
- extend remote debug access past the 4 GB barrier on respectively
capable hardware
- documentation update"
* tag 'firewire-updates' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
firewire: Enable remote DMA above 4 GB
firewire: ohci: Turn remote DMA support into a module parameter
Documentation/: update FireWire debugging documentation
Linus Torvalds [Mon, 27 Jan 2014 16:12:20 +0000 (08:12 -0800)]
Merge tag 'cris-for-3.14' of git://jni.nu/cris
Pull cris changes from Jesper Nilsson:
"Mostly removal of deprecated or old code, but also a long promised
update of the CRIS syscalls"
* tag 'cris-for-3.14' of git://jni.nu/cris:
Drop code for CRISv10 CPU simulator
Cleanup whitespace, remove old author tag
CRIS: Add missing syscalls
cris: sync_serial: remove interruptible_sleep_on
cris: remove deprecated IRQF_DISABLED
Error message:
arch/microblaze/kernel/setup.c: In function 'machine_early_init':
arch/microblaze/kernel/setup.c:177:3: error: 'pr_cont'
undeclared (first use in this function)
arch/microblaze/kernel/setup.c:177:3: note: each undeclared
identifier is reported only once for each function it appears in
arch/microblaze/kernel/setup.c:177:10: error: expected ';'
before string constant
arch/microblaze/kernel/setup.c:177:33: error: expected statement
before ')' token
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Michal Simek [Fri, 20 Dec 2013 09:16:40 +0000 (10:16 +0100)]
microblaze: timer: Use generic sched_clock implementation
Remove sched_clock from the driver and use sched_clock_register
function.
Inspired-by:
"arch_timer: Move to generic sched_clock framework"
(sha1: 65cd4f6c99c1170bd0114dbd71b978012ea44d28)
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Linus Torvalds [Sun, 26 Jan 2014 19:06:16 +0000 (11:06 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML changes from Richard Weinberger:
"This time only various cleanups and housekeeping patches"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
um: hostfs: make functions static
um: Include generic barrier.h
um: Removed unused attributes from thread_struct
Linus Torvalds [Sun, 26 Jan 2014 19:00:41 +0000 (11:00 -0800)]
Merge tag 'mmc-updates-for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Pull MMC updates from Chris Ball:
"MMC highlights for 3.14:
Core:
- Avoid get_cd() on cards marked nonremovable
Drivers:
- arasan: New driver for controllers found in e.g. Xilinx Zynq SoC
- dwmmc: Support Hisilicon K3 SoC controllers
- esdhc-imx: Support for HS200 mode, DDR modes on MX6, runtime PM
- sdhci-pci: Support O2Micro/BayHubTech controllers used in laptops
like Lenovo ThinkPad W540, Dell Latitude E5440, Dell Latitude E6540
- tegra: Support Tegra124 SoCs"
* tag 'mmc-updates-for-3.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc: (55 commits)
mmc: sdhci-pci: Fix possibility of chip->fixes being null
mmc: sdhci-pci: Fix BYT sd card getting stuck in runtime suspend
mmc: sdhci: Allow for long command timeouts
mmc: sdio: add a quirk for broken SDIO_CCCR_INTx polling
mmc: sdhci: fix lockdep error in tuning routine
mmc: dw_mmc: k3: remove clk_table
mmc: dw_mmc: fix dw_mci_get_cd
mmc: dw_mmc: fix sparse non static symbol warning
mmc: sdhci-esdhc-imx: fix warning during module remove function
mmc: sdhci-esdhc-imx: fix access hardirq-unsafe lock in atomic context
mmc: core: sd: implement proper support for sd3.0 au sizes
mmc: atmel-mci: add vmmc-supply support
mmc: sdhci-pci: add broken HS200 quirk for Intel Merrifield
mmc: sdhci: add quirk for broken HS200 support
mmc: arasan: Add driver for Arasan SDHCI
mmc: dw_mmc: add dw_mmc-k3 for k3 platform
mmc: dw_mmc: use slot-gpio to handle cd pin
mmc: sdhci-pci: add support of O2Micro/BayHubTech SD hosts
mmc: sdhci-pci: break out definitions to header file
mmc: tmio: fixup compile error
...
Linus Torvalds [Sun, 26 Jan 2014 18:55:41 +0000 (10:55 -0800)]
Merge tag 'for-3.14-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
Pull 9p changes from Eric Van Hensbergen:
"Included are a new cache model for support of mmap, and several
cleanups across the filesystem and networking portions of the code"
* tag 'for-3.14-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
9p: update documentation
9P: introduction of a new cache=mmap model.
net/9p: remove virtio default hack and set appropriate bits instead
9p: remove useless 'name' variable and assignment
9p: fix return value in case in v9fs_fid_xattr_set()
9p: remove useless variable and assignment
9p: remove useless assignment
9p: remove unused 'super_block' struct pointer
9p: remove never used return variable
9p: remove unused 'p9_fid' struct pointer
9p: remove unused 'p9_client' struct pointer
dcache: Translating dentry into pathname without taking rename_lock
The __dentry_path locking was changed and the variable error was
intended to be moved outside of the loop. Unfortunately the inner
declaration of error was not removed. Resulting in a version of
__dentry_path that will never return an error.
Remove the problematic inner declaration of error and allow
__dentry_path to return errors once again.
Cc: stable@vger.kernel.org Cc: Waiman Long <Waiman.Long@hp.com> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
vfs: Is mounted should be testing mnt_ns for NULL or error.
A bug was introduced with the is_mounted helper function in
commit f7a99c5b7c8bd3d3f533c8b38274e33f3da9096e
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat Jun 9 00:59:08 2012 -0400
get rid of ->mnt_longterm
it's enough to set ->mnt_ns of internal vfsmounts to something
distinct from all struct mnt_namespace out there; then we can
just use the check for ->mnt_ns != NULL in the fast path of
mntput_no_expire()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The intent was to test if the real_mount(vfsmount)->mnt_ns was
NULL_OR_ERR but the code is actually testing real_mount(vfsmount)
and always returning true.
The result is d_absolute_path returning paths it should be hiding.
Cc: stable@vger.kernel.org Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
So far I've had one ACK for this, and no other comments. So I think it
is probably time to send this via some suitable tree. I'm guessing that
the vfs tree would be the most appropriate route, but not sure that
there is one at the moment (don't see anything recent at kernel.org)
so in that case I think -mm is the "back up plan". Al, please let me
know if you will take this?
Steve.
---------------------
Following on from the "Re: [PATCH v3] vfs: fix a bug when we do some dio
reads with append dio writes" thread on linux-fsdevel, this patch is my
current version of the fix proposed as option (b) in that thread.
Removing the i_size test from the direct i/o read path at vfs level
means that filesystems now have to deal with requests which are beyond
i_size themselves. These I've divided into three sets:
a) Those with "no op" ->direct_IO (9p, cifs, ceph)
These are obviously not going to be an issue
b) Those with "home brew" ->direct_IO (nfs, fuse)
I've been told that NFS should not have any problem with the larger
i_size, however I've added an extra test to FUSE to duplicate the
original behaviour just to be on the safe side.
c) Those using __blockdev_direct_IO()
These call through to ->get_block() which should deal with the EOF
condition correctly. I've verified that with GFS2 and I believe that
Zheng has verified it for ext4. I've also run the test on XFS and it
passes both before and after this change.
The part of the patch in filemap.c looks a lot larger than it really is
- there are only two lines of real change. The rest is just indentation
of the contained code.
There remains a test of i_size though, which was added for btrfs. It
doesn't cause the other filesystems a problem as the test is performed
after ->direct_IO has been called. It is possible that there is a race
that does matter to btrfs, however this patch doesn't change that, so
its still an overall improvement.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Reported-by: Zheng Liu <gnehzuil.liu@gmail.com> Cc: Jan Kara <jack@suse.cz> Cc: Dave Chinner <david@fromorbit.com> Acked-by: Miklos Szeredi <miklos@szeredi.hu> Cc: Chris Mason <clm@fb.com> Cc: Josef Bacik <jbacik@fb.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
When using the per-superblock xattr handlers permission checking is
done by the generic code. hfsplus just needs to check for the magic
osx attribute not to leak into protected namespaces.
Also given that the code was obviously copied from JFS the proper
attribution was missing.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Remove the boilerplate code to marshall and unmarhall ACL objects into
xattrs and operate on the posix_acl objects directly. Also move all
the ACL handling code into nfs?acl.c where it belongs.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
nfs: use generic posix ACL infrastructure for v3 Posix ACLs
This causes a small behaviour change in that we don't bother to set
ACLs on file creation if the mode bit can express the access permissions
fully, and thus behaving identical to local filesystems.
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
James Hogan [Thu, 14 Nov 2013 21:15:13 +0000 (21:15 +0000)]
um: hostfs: make functions static
The hostfs_*() callback functions are all only used within
hostfs_kern.c, so make them static.
Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: user-mode-linux-devel@lists.sourceforge.net Signed-off-by: Richard Weinberger <richard@nod.at>
Also don't bother to set up a .get_acl method for symlinks as we do not
support access control (ACLs or even mode bits) for symlinks in Linux,
and create inodes with the proper mode instead of fixing it up later.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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