Reduce boilerplate code by using __seq_open_private() instead of seq_open()
in fscache_objlist_open().
Signed-off-by: Rob Jones <rob.jones@codethink.co.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Steve Dickson <steved@redhat.com>
When CacheFiles cache objects are in use, they have in-memory representations,
as defined by the cachefiles_object struct. These are kept in a tree rooted in
the cache and indexed by dentry pointer (since there's a unique mapping between
object index key and dentry).
Collisions can occur between a representation already in the tree and a new
representation being set up because it takes time to dispose of an old
representation - particularly if it must be unlinked or renamed.
When such a collision occurs, cachefiles_mark_object_active() is meant to check
to see if the old, already-present representation is in the process of being
discarded (ie. FSCACHE_OBJECT_IS_LIVE is not set on it) - and, if so, wait for
the representation to be removed (ie. CACHEFILES_OBJECT_ACTIVE is then
cleared).
However, the test for whether the old representation is still live is checking
the new object - which always will be live at this point. This leads to an
oops looking like:
CacheFiles: Error: Unexpected object collision
object: OBJ1b354
objstate=LOOK_UP_OBJECT fl=8 wbusy=2 ev=0[0]
ops=0 inp=0 exc=0
parent=ffff88053f5417c0
cookie=ffff880538f202a0 [pr=ffff8805381b7160 nd=ffff880509c6eb78 fl=27]
key=[8] '2490000000000000'
xobject: OBJ1a600
xobjstate=DROP_OBJECT fl=70 wbusy=2 ev=0[0]
xops=0 inp=0 exc=0
xparent=ffff88053f5417c0
xcookie=ffff88050f4cbf70 [pr=ffff8805381b7160 nd= (null) fl=12]
------------[ cut here ]------------
kernel BUG at fs/cachefiles/namei.c:200!
...
Workqueue: fscache_object fscache_object_work_func [fscache]
...
RIP: ... cachefiles_walk_to_object+0x7ea/0x860 [cachefiles]
...
Call Trace:
[<ffffffffa04dadd8>] ? cachefiles_lookup_object+0x58/0x100 [cachefiles]
[<ffffffffa01affe9>] ? fscache_look_up_object+0xb9/0x1d0 [fscache]
[<ffffffffa01afc4d>] ? fscache_parent_ready+0x2d/0x80 [fscache]
[<ffffffffa01b0672>] ? fscache_object_work_func+0x92/0x1f0 [fscache]
[<ffffffff8107e82b>] ? process_one_work+0x16b/0x400
[<ffffffff8107fc16>] ? worker_thread+0x116/0x380
[<ffffffff8107fb00>] ? manage_workers.isra.21+0x290/0x290
[<ffffffff81085edc>] ? kthread+0xbc/0xe0
[<ffffffff81085e20>] ? flush_kthread_worker+0x80/0x80
[<ffffffff81502d0c>] ? ret_from_fork+0x7c/0xb0
[<ffffffff81085e20>] ? flush_kthread_worker+0x80/0x80
Reported-by: Manuel Schölling <manuel.schoelling@gmx.de>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Steve Dickson <steved@redhat.com>
Pull x86 cpu offlining patch from Ingo Molnar:
"This tree includes a single commit that speeds up x86 suspend/resume
by replacing a naive 100msec sleep based polling loop with proper
completion notification.
This gives some real suspend/resume benefit on servers with larger
core counts"
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/smpboot: Speed up suspend/resume by avoiding 100ms sleep for CPU offline during S3
Pull x86 cleanups from Ingo Molnar:
"Three small cleanups"
* 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tty/serial/8250: Clean up the asm/serial.h include file a bit
x86/tty/serial/8250: Resolve missing-field-initializers warnings
x86: Remove obsolete comment in uapi/e820.h
Pull x86 build update from Ingo Molnar:
"A single commit that simplifies the no-FPU-ops build options"
* 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kbuild: Eliminate duplicate command line options
Pull x86 bootup updates from Ingo Molnar:
"The changes in this cycle were:
- Fix rare SMP-boot hang (mostly in virtual environments)
- Fix build warning with certain (rare) toolchains"
* 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/relocs: Make per_cpu_load_addr static
x86/smpboot: Initialize secondary CPU only if master CPU will wait for it
Pull x86 asm updates from Ingo Molnar:
"The changes in this cycle were:
- Speed up the x86 __preempt_schedule() implementation
- Fix/improve low level asm code debug info annotations"
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Unwind-annotate thunk_32.S
x86: Improve cmpxchg8b_emu.S
x86: Improve cmpxchg16b_emu.S
x86/lib/Makefile: Remove the unnecessary "+= thunk_64.o"
x86: Speed up ___preempt_schedule*() by using THUNK helpers
1) uml kernel bootmem managed through bootmem_data->node_bootmem_map,
not the struct page array, so the array is unnecessary.
2) the bootmem struct page array has been pointed by a *local* pointer,
struct page *map, in init_maps function. The array can be accessed only
in init_maps's scope. As a result, uml kernel wastes about 1% of total
memory.
Signed-off-by: Honggang Li <enjoymindful@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
arch/x86/um/checksum_32.S had been copy & paste from x86. When build
x86 uml, csum_partial_copy_generic_i386 mess up the exception table.
In fact, exception table dose not work in uml kernel.
And csum_partial_copy_generic_i386 never been called. So, delete it.
Signed-off-by: Honggang Li <enjoymindful@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Pull scheduler updates from Ingo Molnar:
"The main changes in this cycle were:
- Optimized support for Intel "Cluster-on-Die" (CoD) topologies (Dave
Hansen)
- Various sched/idle refinements for better idle handling (Nicolas
Pitre, Daniel Lezcano, Chuansheng Liu, Vincent Guittot)
- sched/numa updates and optimizations (Rik van Riel)
- sysbench speedup (Vincent Guittot)
- capacity calculation cleanups/refactoring (Vincent Guittot)
- Various cleanups to thread group iteration (Oleg Nesterov)
- Double-rq-lock removal optimization and various refactorings
(Kirill Tkhai)
- various sched/deadline fixes
... and lots of other changes"
* 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (72 commits)
sched/dl: Use dl_bw_of() under rcu_read_lock_sched()
sched/fair: Delete resched_cpu() from idle_balance()
sched, time: Fix build error with 64 bit cputime_t on 32 bit systems
sched: Improve sysbench performance by fixing spurious active migration
sched/x86: Fix up typo in topology detection
x86, sched: Add new topology for multi-NUMA-node CPUs
sched/rt: Use resched_curr() in task_tick_rt()
sched: Use rq->rd in sched_setaffinity() under RCU read lock
sched: cleanup: Rename 'out_unlock' to 'out_free_new_mask'
sched: Use dl_bw_of() under RCU read lock
sched/fair: Remove duplicate code from can_migrate_task()
sched, mips, ia64: Remove __ARCH_WANT_UNLOCKED_CTXSW
sched: print_rq(): Don't use tasklist_lock
sched: normalize_rt_tasks(): Don't use _irqsave for tasklist_lock, use task_rq_lock()
sched: Fix the task-group check in tg_has_rt_tasks()
sched/fair: Leverage the idle state info when choosing the "idlest" cpu
sched: Let the scheduler see CPU idle states
sched/deadline: Fix inter- exclusive cpusets migrations
sched/deadline: Clear dl_entity params when setscheduling to different class
sched/numa: Kill the wrong/dead TASK_DEAD check in task_numa_fault()
...
Pull perf fixes from Ingo Molnar:
"Two leftover fixes from the v3.17 cycle - these will be forwarded to
stable as well, if they prove problem-free in wider testing as well"
[ Side note: the "fix perf bug in fork()" fix had also come in through
Andrew's patch-bomb - Linus ]
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix perf bug in fork()
perf: Fix unclone_ctx() vs. locking
Pull perf updates from Ingo Molnar:
"Kernel side updates:
- Fix and enhance poll support (Jiri Olsa)
- Re-enable inheritance optimization (Jiri Olsa)
- Enhance Intel memory events support (Stephane Eranian)
- Refactor the Intel uncore driver to be more maintainable (Zheng
Yan)
- Enhance and fix Intel CPU and uncore PMU drivers (Peter Zijlstra,
Andi Kleen)
- [ plus various smaller fixes/cleanups ]
User visible tooling updates:
- Add +field argument support for --field option, so that one can add
fields to the default list of fields to show, ie now one can just
do:
perf report --fields +pid
And the pid will appear in addition to the default fields (Jiri
Olsa)
- Add +field argument support for --sort option (Jiri Olsa)
- Honour -w in the report tools (report, top), allowing to specify
the widths for the histogram entries columns (Namhyung Kim)
- Properly show submicrosecond times in 'perf kvm stat' (Christian
Borntraeger)
- Add beautifier for mremap flags param in 'trace' (Alex Snast)
- perf script: Allow callchains if any event samples them
- Don't truncate Intel style addresses in 'annotate' (Alex Converse)
- Allow profiling when kptr_restrict == 1 for non root users, kernel
samples will just remain unresolved (Andi Kleen)
- Allow configuring default options for callchains in config file
(Namhyung Kim)
- Support operations for shared futexes. (Davidlohr Bueso)
- "perf kvm stat report" improvements by Alexander Yarygin:
- Save pid string in opts.target.pid
- Enable the target.system_wide flag
- Unify the title bar output
- [ plus lots of other fixes and small improvements. ]
Tooling infrastructure changes:
- Refactor unit and scale function parameters for PMU parsing
routines (Matt Fleming)
- Improve DSO long names lookup with rbtree, resulting in great
speedup for workloads with lots of DSOs (Waiman Long)
- We were not handling POLLHUP notifications for event file
descriptors
Fix it by filtering entries in the events file descriptor array
after poll() returns, refcounting mmaps so that when the last fd
pointing to a perf mmap goes away we do the unmap (Arnaldo Carvalho
de Melo)
- Intel PT prep work, from Adrian Hunter, including:
- Let a user specify a PMU event without any config terms
- Add perf-with-kcore script
- Let default config be defined for a PMU
- Add perf_pmu__scan_file()
- Add a 'perf test' for tracking with sched_switch
- Add 'flush' callback to scripting API
- Use ring buffer consume method to look like other tools (Arnaldo
Carvalho de Melo)
- hists browser (used in top and report) refactorings, getting rid of
unused variables and reducing source code size by handling similar
cases in a fewer functions (Namhyung Kim).
- Replace thread unsafe strerror() with strerror_r() accross the
whole tools/perf/ tree (Masami Hiramatsu)
- Rename ordered_samples to ordered_events and allow setting a queue
size for ordering events (Jiri Olsa)
- [ plus lots of fixes, cleanups and other improvements ]"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (198 commits)
perf/x86: Tone down kernel messages when the PMU check fails in a virtual environment
perf/x86/intel/uncore: Fix minor race in box set up
perf record: Fix error message for --filter option not coming after tracepoint
perf tools: Fix build breakage on arm64 targets
perf symbols: Improve DSO long names lookup speed with rbtree
perf symbols: Encapsulate dsos list head into struct dsos
perf bench futex: Sanitize -q option in requeue
perf bench futex: Support operations for shared futexes
perf trace: Fix mmap return address truncation to 32-bit
perf tools: Refactor unit and scale function parameters
perf tools: Fix line number in the config file error message
perf tools: Convert {record,top}.call-graph option to call-graph.record-mode
perf tools: Introduce perf_callchain_config()
perf callchain: Move some parser functions to callchain.c
perf tools: Move callchain config from record_opts to callchain_param
perf hists browser: Fix callchain print bug on TUI
perf tools: Use ACCESS_ONCE() instead of volatile cast
perf tools: Modify error code for when perf_session__new() fails
perf tools: Fix perf record as non root with kptr_restrict == 1
perf stat: Fix --per-core on multi socket systems
...
Pull core locking updates from Ingo Molnar:
"The main updates in this cycle were:
- mutex MCS refactoring finishing touches: improve comments, refactor
and clean up code, reduce debug data structure footprint, etc.
- qrwlock finishing touches: remove old code, self-test updates.
- small rwsem optimization
- various smaller fixes/cleanups"
* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/lockdep: Revert qrwlock recusive stuff
locking/rwsem: Avoid double checking before try acquiring write lock
locking/rwsem: Move EXPORT_SYMBOL() lines to follow function definition
locking/rwlock, x86: Delete unused asm/rwlock.h and rwlock.S
locking/rwlock, x86: Clean up asm/spinlock*.h to remove old rwlock code
locking/semaphore: Resolve some shadow warnings
locking/selftest: Support queued rwlock
locking/lockdep: Restrict the use of recursive read_lock() with qrwlock
locking/spinlocks: Always evaluate the second argument of spin_lock_nested()
locking/Documentation: Update locking/mutex-design.txt disadvantages
locking/Documentation: Move locking related docs into Documentation/locking/
locking/mutexes: Use MUTEX_SPIN_ON_OWNER when appropriate
locking/mutexes: Refactor optimistic spinning code
locking/mcs: Remove obsolete comment
locking/mutexes: Document quick lock release when unlocking
locking/mutexes: Standardize arguments in lock/unlock slowpaths
locking: Remove deprecated smp_mb__() barriers
Pull arch atomic cleanups from Ingo Molnar:
"This is a series kept separate from the main locking tree, which
cleans up and improves various details in the atomics type handling:
- Remove the unused atomic_or_long() method
- Consolidate and compress atomic ops implementations between
architectures, to reduce linecount and to make it easier to add new
ops.
- Rewrite generic atomic support to only require cmpxchg() from an
architecture - generate all other methods from that"
* 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (23 commits)
locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read()
locking, mips: Fix atomics
locking, sparc64: Fix atomics
locking,arch: Rewrite generic atomic support
locking,arch,xtensa: Fold atomic_ops
locking,arch,sparc: Fold atomic_ops
locking,arch,sh: Fold atomic_ops
locking,arch,powerpc: Fold atomic_ops
locking,arch,parisc: Fold atomic_ops
locking,arch,mn10300: Fold atomic_ops
locking,arch,mips: Fold atomic_ops
locking,arch,metag: Fold atomic_ops
locking,arch,m68k: Fold atomic_ops
locking,arch,m32r: Fold atomic_ops
locking,arch,ia64: Fold atomic_ops
locking,arch,hexagon: Fold atomic_ops
locking,arch,cris: Fold atomic_ops
locking,arch,avr32: Fold atomic_ops
locking,arch,arm64: Fold atomic_ops
locking,arch,arm: Fold atomic_ops
...
Pull RCU updates from Ingo Molnar:
"The main changes in this cycle were:
- changes related to No-CBs CPUs and NO_HZ_FULL
- RCU-tasks implementation
- torture-test updates
- miscellaneous fixes
- locktorture updates
- RCU documentation updates"
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (81 commits)
workqueue: Use cond_resched_rcu_qs macro
workqueue: Add quiescent state between work items
locktorture: Cleanup header usage
locktorture: Cannot hold read and write lock
locktorture: Fix __acquire annotation for spinlock irq
locktorture: Support rwlocks
rcu: Eliminate deadlock between CPU hotplug and expedited grace periods
locktorture: Document boot/module parameters
rcutorture: Rename rcutorture_runnable parameter
locktorture: Add test scenario for rwsem_lock
locktorture: Add test scenario for mutex_lock
locktorture: Make torture scripting account for new _runnable name
locktorture: Introduce torture context
locktorture: Support rwsems
locktorture: Add infrastructure for torturing read locks
torture: Address race in module cleanup
locktorture: Make statistics generic
locktorture: Teach about lock debugging
locktorture: Support mutexes
locktorture: Add documentation
...
This update contains:
o various cleanups
o log recovery debug hooks
o seek hole/data implementation merge
o extent shift rework to fix collapse range bugs
o various sparse warning fixes
o log recovery transaction processing rework to fix use after free bugs
o metadata buffer IO infrastructuer rework to ensure all buffers under IO have
valid reference counts
o various fixes for ondisk flags, writeback and zero range corner cases
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Merge tag 'xfs-for-linus-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs
Pull xfs update from Dave Chinner:
"This update contains:
- various cleanups
- log recovery debug hooks
- seek hole/data implementation merge
- extent shift rework to fix collapse range bugs
- various sparse warning fixes
- log recovery transaction processing rework to fix use after free
bugs
- metadata buffer IO infrastructuer rework to ensure all buffers
under IO have valid reference counts
- various fixes for ondisk flags, writeback and zero range corner
cases"
* tag 'xfs-for-linus-3.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (56 commits)
xfs: fix agno increment in xfs_inumbers() loop
xfs: xfs_iflush_done checks the wrong log item callback
xfs: flush the range before zero range conversion
xfs: restore buffer_head unwritten bit on ioend cancel
xfs: check for null dquot in xfs_quota_calc_throttle()
xfs: fix crc field handling in xfs_sb_to/from_disk
xfs: don't send null bp to xfs_trans_brelse()
xfs: check for inode size overflow in xfs_new_eof()
xfs: only set extent size hint when asked
xfs: project id inheritance is a directory only flag
xfs: kill time.h
xfs: compat_xfs_bstat does not have forkoff
xfs: simplify xfs_zero_remaining_bytes
xfs: check xfs_buf_read_uncached returns correctly
xfs: introduce xfs_buf_submit[_wait]
xfs: kill xfs_bioerror_relse
xfs: xfs_bioerror can die.
xfs: kill xfs_bdstrat_cb
xfs: rework xfs_buf_bio_endio error handling
xfs: xfs_buf_ioend and xfs_buf_iodone_work duplicate functionality
...
Pull vfs updates from Al Viro:
"The big thing in this pile is Eric's unmount-on-rmdir series; we
finally have everything we need for that. The final piece of prereqs
is delayed mntput() - now filesystem shutdown always happens on
shallow stack.
Other than that, we have several new primitives for iov_iter (Matt
Wilcox, culled from his XIP-related series) pushing the conversion to
->read_iter()/ ->write_iter() a bit more, a bunch of fs/dcache.c
cleanups and fixes (including the external name refcounting, which
gives consistent behaviour of d_move() wrt procfs symlinks for long
and short names alike) and assorted cleanups and fixes all over the
place.
This is just the first pile; there's a lot of stuff from various
people that ought to go in this window. Starting with
unionmount/overlayfs mess... ;-/"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (60 commits)
fs/file_table.c: Update alloc_file() comment
vfs: Deduplicate code shared by xattr system calls operating on paths
reiserfs: remove pointless forward declaration of struct nameidata
don't need that forward declaration of struct nameidata in dcache.h anymore
take dname_external() into fs/dcache.c
let path_init() failures treated the same way as subsequent link_path_walk()
fix misuses of f_count() in ppp and netlink
ncpfs: use list_for_each_entry() for d_subdirs walk
vfs: move getname() from callers to do_mount()
gfs2_atomic_open(): skip lookups on hashed dentry
[infiniband] remove pointless assignments
gadgetfs: saner API for gadgetfs_create_file()
f_fs: saner API for ffs_sb_create_file()
jfs: don't hash direct inode
[s390] remove pointless assignment of ->f_op in vmlogrdr ->open()
ecryptfs: ->f_op is never NULL
android: ->f_op is never NULL
nouveau: __iomem misannotations
missing annotation in fs/file.c
fs: namespace: suppress 'may be used uninitialized' warnings
...
The old code has problems with the Dell MST monitors due to some
assumptions I made that weren't true.
I initially thought the Virtual Channel Payload IDs had to be in
the DPCD table in ascending order, however it appears that assumption
is bogus.
The old code also assumed it was possible to insert a member
into the table and it would move other members up, like it does
when you remove table entries, however reality has shown this
isn't true.
So the new code allocates VCPIs separate from entries in the payload
tracking table, and when we remove an entry from the DPCD table,
I shuffle the tracking payload entries around in the struct.
This appears to make VT switch more robust (still not perfect)
with an MST enabled Dell monitor.
Signed-off-by: Dave Airlie <airlied@redhat.com>
caused a regression in xfs_inumbers, which in turn broke
xfsdump, causing incomplete dumps.
The loop in xfs_inumbers() needs to fill the user-supplied
buffers, and iterates via xfs_btree_increment, reading new
ags as needed.
But the first time through the loop, if xfs_btree_increment()
succeeds, we continue, which triggers the ++agno at the bottom
of the loop, and we skip to soon to the next ag - without
the proper setup under next_ag to read the next ag.
Fix this by removing the agno increment from the loop conditional,
and only increment agno if we have actually hit the code under
the next_ag: target.
Cc: stable@vger.kernel.org
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This comment is 5 years outdated; init_file() no longer exists.
Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
The following pairs of system calls dealing with extended attributes only
differ in their behavior on whether the symbolic link is followed (when
the named file is a symbolic link):
- setxattr() and lsetxattr()
- getxattr() and lgetxattr()
- listxattr() and llistxattr()
- removexattr() and lremovexattr()
Despite this, the implementations all had duplicated code, so this commit
redirects each of the above pairs of system calls to a corresponding
function to which different lookup flags (LOOKUP_FOLLOW or 0) are passed.
For me this reduced the stripped size of xattr.o from 8824 to 8248 bytes.
Signed-off-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
As it is, path_lookupat() and path_mounpoint() might end up leaking struct file
reference in some cases.
Spotted-by: Eric Biggers <ebiggers3@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Pull security subsystem updates from James Morris.
Mostly ima, selinux, smack and key handling updates.
* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (65 commits)
integrity: do zero padding of the key id
KEYS: output last portion of fingerprint in /proc/keys
KEYS: strip 'id:' from ca_keyid
KEYS: use swapped SKID for performing partial matching
KEYS: Restore partial ID matching functionality for asymmetric keys
X.509: If available, use the raw subjKeyId to form the key description
KEYS: handle error code encoded in pointer
selinux: normalize audit log formatting
selinux: cleanup error reporting in selinux_nlmsg_perm()
KEYS: Check hex2bin()'s return when generating an asymmetric key ID
ima: detect violations for mmaped files
ima: fix race condition on ima_rdwr_violation_check and process_measurement
ima: added ima_policy_flag variable
ima: return an error code from ima_add_boot_aggregate()
ima: provide 'ima_appraise=log' kernel option
ima: move keyring initialization to ima_init()
PKCS#7: Handle PKCS#7 messages that contain no X.509 certs
PKCS#7: Better handling of unsupported crypto
KEYS: Overhaul key identification when searching for asymmetric keys
KEYS: Implement binary asymmetric key ID handling
...
Pull parisc fix from Helge Deller:
"This patch intentionally breaks the ABI on PARISC Linux!
It assigns new numbers to SIGSTKFLT, SIGXCPU, SIGXFSZ and SIGSYS so
that those are below 32 and thus leaves us with 32 RT signals like
other Linux architectures (SIGRTMIN now becomes 32 instead of 37).
Even if it breaks the ABI, it doesn't seem to have any visible impact
on existing userspace applications. I was able to mix new kernel
and/or glibc without impacting normal bootup. So, even if it breaks
the ABI, the benefits (e.g. being able to use systemd on PARISC
Linux) outperforms the minimal (if any) impact it gives.
The patch has been discussed on the parisc kernel mailing list and the
coresponding glibc patch will be committed by the parisc glibc
maintainer after this patch went into 3.18.
Some more background information about this patch is in the commit
message"
[ Side note: the "no regressions" rule has always been about *users*,
not ABI's. You can change ABI's all you like, until somebody actually
notices. At that point it gets reverted regardless of how good your
reasons and excuses.
And admittedly, with parisc, the distinct lack of many users makes
that fairly unlikely anyway :^p - Linus ]
* 'parisc-3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Reduce SIGRTMIN from 37 to 32 to behave like other Linux architectures
dell-wmi: Fix access out of memory
eeepc-laptop: Cleanups, refactoring, sysfs perms, and improved error handling
intel-rst: ACPI and error handling cleanups
thinkpad-acpi: Whitespace cleanup
toshiba_acpi: HCI/SCI interface update, keyboard backlight type 2 support,
new scancodes, cleanups
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Merge tag 'platform-drivers-x86-v3.18-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull x86 platform driver updates from Darren Hart:
"The following have all spent at least a few days in linux-next, most
for more than a week. These are mostly cleanups and error handling
improvements with a few updates to extend existing support to newer
hardware.
Details:
- dell-wmi: fix access out of memory
- eeepc-laptop: cleanups, refactoring, sysfs perms, and improved
error handling
- intel-rst: ACPI and error handling cleanups
- thinkpad-acpi: whitespace cleanup
- toshiba_acpi: HCI/SCI interface update, keyboard backlight type 2
support, new scancodes, cleanups"
* tag 'platform-drivers-x86-v3.18-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (23 commits)
toshiba_acpi: Adapt kbd_bl_timeout_store to the new kbd type
toshiba_acpi: Change HCI/SCI functions return code type
toshiba_acpi: Unify return codes prefix from HCI/SCI to TOS
toshiba_acpi: Rename hci_raw to tci_raw
dell-wmi: Fix access out of memory
eeepc-laptop: clean up control flow in *_rfkill_notifier
eeepc-laptop: store_cpufv: return error if set_acpi fails
eeepc-laptop: check proper return values in get_cpufv
eeepc-laptop: make fan1_input really read-only
eeepc-laptop: pull out SENSOR_STORE_FUNC and SENSOR_SHOW_FUNC macros
eeepc-laptop: tell sysfs that the disp attribute is write-only
eeepc-laptop: pull out ACPI_STORE_FUNC and ACPI_SHOW_FUNC macros
eeepc-laptop: use DEVICE_ATTR* to instantiate device_attributes
eeepc-laptop: change sysfs function names to API expectations
eeepc-laptop: clean up coding style
eeepc-laptop: simplify parse_arg()
intel-rst: Clean up ACPI add function
intel-rst: Use ACPI_FAILURE() macro instead !ACPI_SUCCESS() for error checking
x86: thinkpad_acpi.c: fixed spacing coding style issue
toshiba_acpi: Support new keyboard backlight type
...
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Merge tag 'tiny/no-advice-fixup-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/josh/linux
Pull tinification fix from Josh "Paper Bag" Triplett:
"Fixup to use PATCHv2 of 'mm: Support compiling out madvise and
fadvise'"
* tag 'tiny/no-advice-fixup-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/josh/linux:
mm: Support fadvise without CONFIG_MMU
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Merge tag 'kselftest-3.18-updates-1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest updates from Shuah Khan:
- fix for missing arguments to printf
- fix to build failures on 32-bit systems.
- enhancement to run memfd_test run on all architectures as most
architectures support __NR_memfd_create
* tag 'kselftest-3.18-updates-1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests/memfd: Run test on all architectures
memfd_test: Add missing argument to printf()
memfd_test: Make it work on 32-bit systems
tools/testing/selftest directory called "ftrace" that holds tests
aimed at testing ftrace and subsystems that use ftrace (like kprobes).
So far only a few tests were written (by Masami Hiramatsu), but more will
be added in the near future (3.19).
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Merge tag 'ftracetest-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull ftrace test code from Steven Rostedt:
"This patch series starts a new selftests section in the
tools/testing/selftest directory called "ftrace" that holds tests
aimed at testing ftrace and subsystems that use ftrace (like kprobes).
So far only a few tests were written (by Masami Hiramatsu), but more
will be added in the near future (3.19)"
* tag 'ftracetest-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing/kprobes: Add selftest scripts testing kprobe-tracer as startup test
ftracetest: Add POSIX.3 standard and XFAIL result codes
ftracetest: Add kprobe basic testcases
ftracetest: Add ftrace basic testcases
ftracetest: Initial commit for ftracetest
A way to allow users to skip a manual bisect.
Allowing cherry picked patches to be tested.
The cherry pick worked for a test I needed, but stressing it may
not have all the desired effects. It doesn't cause any regressions
so I kept it in.
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Merge tag 'ktest-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest
Pull ktest update from Steven Rostedt:
"A fix and a clean up to ktest, as well as two small features.
- A way to allow users to skip a manual bisect.
- Allowing cherry picked patches to be tested.
The cherry pick worked for a test I needed, but stressing it may not
have all the desired effects. It doesn't cause any regressions so I
kept it in"
* tag 'ktest-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
ktest: Don't bother with bisect good or bad on replay
ktest: Fix check for new kernel success on rebooting to good kernel
ktest: add ability to skip during BISECT_MANUAL
ktest: Add PATCHCHECK_CHERRY
code screem nasty warnings:
WARNING: CPU: 0 PID: 91 at kernel/sched/core.c:7253 __might_sleep+0x9a/0x378()
do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff8d79b511>] event_test_thread+0x48/0x93
Modules linked in:
CPU: 0 PID: 91 Comm: test-events Not tainted 3.17.0-rc7-00109-g2f85d18 #37
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140531_083030-gandalf 04/01/2014
0000000000000000 ffff880010ec3c80 ffffffff8c696943 ffff880010ec3cb8
ffffffff8be7cae5 ffffffff8bead236 0000000000000001 ffff88001161fa01
0000000000000001 0000000000000000 ffff880010ec3d20 ffffffff8be7cb46
Call Trace:
[<ffffffff8c696943>] dump_stack+0x19/0x1b
[<ffffffff8be7cae5>] warn_slowpath_common+0x8f/0xa8
[<ffffffff8bead236>] ? __might_sleep+0x9a/0x378
[<ffffffff8be7cb46>] warn_slowpath_fmt+0x48/0x50
[<ffffffff8be0dd55>] ? sched_clock+0x9/0xd
[<ffffffff8d79b511>] ? event_test_thread+0x48/0x93
[<ffffffff8d79b511>] ? event_test_thread+0x48/0x93
[<ffffffff8bead236>] __might_sleep+0x9a/0x378
[<ffffffff8c6a0227>] down_read+0x26/0x98
[<ffffffff8be8f503>] exit_signals+0x27/0x1c2
[<ffffffff8be7fedd>] do_exit+0x193/0x10bd
[<ffffffff8bfd1969>] ? kfree+0x4a0/0x4d7
[<ffffffff8d79b4c9>] ? event_trace_self_tests+0x6d7/0x6d7
[<ffffffff8d79b4c9>] ? event_trace_self_tests+0x6d7/0x6d7
[<ffffffff8bea4b65>] kthread+0x156/0x156
[<ffffffff8c69c0f8>] ? wait_for_common+0x3e/0x224
[<ffffffff8bea4a0f>] ? insert_kthread_work+0xe7/0xe7
[<ffffffff8c6a353a>] ret_from_fork+0x7a/0xb0
[<ffffffff8bea4a0f>] ? insert_kthread_work+0xe7/0xe7
---[ end trace 14d02ef17adbc114 ]---
These are triggered by some self tests that run at start up when
configure in. Although the code is technically correct, they are a little
sloppy and not very robust. They work now because it runs at boot up
and the tests do not call anything that might trigger a spurious
wake up. But that doesn't mean those tests wont change in the future.
It's best to clean them now to make sure the tests used to test the
internal workings of the system don't cause breakage themselves.
This also quiets the warnings made by the new checks.
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Merge tag 'trace-3.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Seems that Peter Zijlstra added a new check that is making old code
scream nasty warnings:
WARNING: CPU: 0 PID: 91 at kernel/sched/core.c:7253 __might_sleep+0x9a/0x378()
do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff8d79b511>] event_test_thread+0x48/0x93
Call Trace:
__might_sleep+0x9a/0x378
down_read+0x26/0x98
exit_signals+0x27/0x1c2
do_exit+0x193/0x10bd
kthread+0x156/0x156
ret_from_fork+0x7a/0xb0
These are triggered by some self tests that run at start up when
configure in. Although the code is technically correct, they are a
little sloppy and not very robust. They work now because it runs at
boot up and the tests do not call anything that might trigger a
spurious wake up. But that doesn't mean those tests wont change in
the future.
It's best to clean them now to make sure the tests used to test the
internal workings of the system don't cause breakage themselves.
This also quiets the warnings made by the new checks"
* tag 'trace-3.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Clean up scheduling in trace_wakeup_test_thread()
tracing: Robustify wait loop
of the trampoline logic.
The trampoline logic of 3.17 required a descriptor for every function
that is registered to be traced and uses a trampoline. Currently,
only the function graph tracer uses a trampoline, but if you were
to trace all 32,000 (give or take a few thousand) functions with the
function graph tracer, it would create 32,000 descriptors to let us
know that there's a trampoline associated with it. This takes up a bit
of memory when there's a better way to do it.
The redesign now reuses the ftrace_ops' (what registers the function graph
tracer) hash tables. The hash tables tell ftrace what the tracer
wants to trace or doesn't want to trace. There's two of them: one
that tells us what to trace, the other tells us what not to trace.
If the first one is empty, it means all functions should be traced,
otherwise only the ones that are listed should be. The second hash table
tells us what not to trace, and if it is empty, all functions may be
traced, and if there's any listed, then those should not be traced
even if they exist in the first hash table.
It took a bit of massaging, but now these hashes can be used to
keep track of what has a trampoline and what does not, and allows
the ftrace accounting to work. Now we can trace all functions when using
the function graph trampoline, and avoid needing to create any special
descriptors to hold all the functions that are being traced.
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Merge tag 'trace-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing updates from Steven Rostedt:
"This set has a few minor updates, but the big change is the redesign
of the trampoline logic.
The trampoline logic of 3.17 required a descriptor for every function
that is registered to be traced and uses a trampoline. Currently,
only the function graph tracer uses a trampoline, but if you were to
trace all 32,000 (give or take a few thousand) functions with the
function graph tracer, it would create 32,000 descriptors to let us
know that there's a trampoline associated with it. This takes up a
bit of memory when there's a better way to do it.
The redesign now reuses the ftrace_ops' (what registers the function
graph tracer) hash tables. The hash tables tell ftrace what the
tracer wants to trace or doesn't want to trace. There's two of them:
one that tells us what to trace, the other tells us what not to trace.
If the first one is empty, it means all functions should be traced,
otherwise only the ones that are listed should be. The second hash
table tells us what not to trace, and if it is empty, all functions
may be traced, and if there's any listed, then those should not be
traced even if they exist in the first hash table.
It took a bit of massaging, but now these hashes can be used to keep
track of what has a trampoline and what does not, and allows the
ftrace accounting to work. Now we can trace all functions when using
the function graph trampoline, and avoid needing to create any special
descriptors to hold all the functions that are being traced"
* tag 'trace-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace: Only disable ftrace_enabled to test buffer in selftest
ftrace: Add sanity check when unregistering last ftrace_ops
kernel: trace_syscalls: Replace rcu_assign_pointer() with RCU_INIT_POINTER()
tracing: generate RCU warnings even when tracepoints are disabled
ftrace: Replace tramp_hash with old_*_hash to save space
ftrace: Annotate the ops operation on update
ftrace: Grab any ops for a rec for enabled_functions output
ftrace: Remove freeing of old_hash from ftrace_hash_move()
ftrace: Set callback to ftrace_stub when no ops are registered
ftrace: Add helper function ftrace_ops_get_func()
ftrace: Add separate function for non recursive callbacks
This patch reduces the value of SIGRTMIN on PARISC from 37 to 32, thus
increasing the number of available RT signals and bring it in sync with other
Linux architectures.
Historically we wanted to natively support HP-UX 32bit binaries with the
PA-RISC Linux port. Because of that we carried the various available signals
from HP-UX (e.g. SIGEMT and SIGLOST) and folded them in between the native
Linux signals. Although this was the right decision at that time, this
required us to increase SIGRTMIN to at least 37 which left us with 27 (64-37)
RT signals.
Those 27 RT signals haven't been a problem in the past, but with the upcoming
importance of systemd we now got the problem that systemd alloctes (hardcoded)
signals up to SIGRTMIN+29 which is beyond our NSIG of 64. Because of that we
have not been able to use systemd on the PARISC Linux port yet.
Of course we could ask the systemd developers to not use those hardcoded
values, but this change is very unlikely, esp. with PA-RISC being a niche
architecture.
The other possibility would be to increase NSIG to e.g. 128, but this would
mean to duplicate most of the existing Linux signal handling code into the
parisc specific Linux kernel tree which would most likely introduce lots of new
bugs beside the code duplication.
The third option is to drop some HP-UX signals and shuffle some other signals
around to bring SIGRTMIN to 32. This is of course an ABI change, but testing
has shown that existing Linux installations are not visibly affected by this
change - most likely because we move those signals around which are rarely used
and move them to slots which haven't been used in Linux yet. In an existing
installation I was able to exchange either the Linux kernel or glibc (or both)
without affecting the boot process and installed applications.
Dropping the HP-UX signals isn't an issue either, since support for HP-UX was
basically dropped a few months back with Kernel 3.14 in commit
f5a408d53e already, when we changed EWOULDBLOCK
to be equal to EAGAIN.
So, even if this is an ABI change, it's better to change it now and thus bring
PARISC Linux in sync with other architectures to avoid other issues in the
future.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: Carlos O'Donell <carlos@systemhalted.org>
Cc: John David Anglin <dave.anglin@bell.net>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: PARISC Linux Kernel Mailinglist <linux-parisc@vger.kernel.org>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Pull networking fixes from David Miller:
"This set fixes a bunch of fallout from the changes that went in during
this merge window, particularly:
- Fix fsl_pq_mdio (Claudiu Manoil) and fm10k (Pranith Kumar) build
failures.
- Several networking drivers do atomic_set() on page counts where
that's not exactly legal. From Eric Dumazet.
- Make __skb_flow_get_ports() work cleanly with unaligned data, from
Alexander Duyck.
- Fix some kernel-doc buglets in rfkill and netlabel, from Fabian
Frederick.
- Unbalanced enable_irq_wake usage in bcmgenet and systemport
drivers, from Florian Fainelli.
- pxa168_eth needs to depend on HAS_DMA, from Geert Uytterhoeven.
- Multi-dequeue in the qdisc layer severely bypasses the fairness
limits the previous code used to enforce, reintroduce in a way that
at the same time doesn't compromise bulk dequeue opportunities.
From Jesper Dangaard Brouer.
- macvlan receive path unnecessarily hops through a softirq by using
netif_rx() instead of netif_receive_skb(). From Jason Baron"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (51 commits)
net: systemport: avoid unbalanced enable_irq_wake calls
net: bcmgenet: avoid unbalanced enable_irq_wake calls
net: bcmgenet: fix off-by-one in incrementing read pointer
net: fix races in page->_count manipulation
mlx4: fix race accessing page->_count
ixgbe: fix race accessing page->_count
igb: fix race accessing page->_count
fm10k: fix race accessing page->_count
net/phy: micrel: Add clock support for KSZ8021/KSZ8031
flow-dissector: Fix alignment issue in __skb_flow_get_ports
net: filter: fix the comments
Documentation: replace __sk_run_filter with __bpf_prog_run
macvlan: optimize the receive path
macvlan: pass 'bool' type to macvlan_count_rx()
drivers: net: xgene: Add 10GbE ethtool support
drivers: net: xgene: Add 10GbE support
drivers: net: xgene: Preparing for adding 10GbE support
dtb: Add 10GbE node to APM X-Gene SoC device tree
Documentation: dts: Update section header for APM X-Gene
MAINTAINERS: Update APM X-Gene section
...
Pull sparc updates from David Miller:
1) Move to 4-level page tables on sparc64 and support up to 53-bits of
physical addressing. Kernel static image BSS size reduced by
several megabytes.
2) M6/M7 cpu support, from Allan Pais.
3) Move to sparse IRQs, handle hypervisor TLB call errors more
gracefully, and add T5 perf_event support. From Bob Picco.
4) Recognize cdroms and compute geometry from capacity in virtual disk
driver, also from Allan Pais.
5) Fix memset() return value on sparc32, from Andreas Larsson.
6) Respect gfp flags in dma_alloc_coherent on sparc32, from Daniel
Hellstrom.
7) Fix handling of compound pages in virtual disk driver, from Dwight
Engen.
8) Fix lockdep warnings in LDC layer by moving IRQ requesting to
ldc_alloc() from ldc_bind().
9) Increase boot string length to 1024 bytes, from Dave Kleikamp.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: (31 commits)
sparc64: Fix lockdep warnings on reboot on Ultra-5
sparc64: Increase size of boot string to 1024 bytes
sparc64: Kill unnecessary tables and increase MAX_BANKS.
sparc64: sparse irq
sparc64: Adjust vmalloc region size based upon available virtual address bits.
sparc64: Increase MAX_PHYS_ADDRESS_BITS to 53.
sparc64: Use kernel page tables for vmemmap.
sparc64: Fix physical memory management regressions with large max_phys_bits.
sparc64: Adjust KTSB assembler to support larger physical addresses.
sparc64: Define VA hole at run time, rather than at compile time.
sparc64: Switch to 4-level page tables.
sparc64: Fix reversed start/end in flush_tlb_kernel_range()
sparc64: Add vio_set_intr() to enable/disable Rx interrupts
vio: fix reuse of vio_dring slot
sunvdc: limit each sg segment to a page
sunvdc: compute vdisk geometry from capacity
sunvdc: add cdrom and v1.1 protocol support
sparc: VIO protocol version 1.6
sparc64: Fix hibernation code refrence to PAGE_OFFSET.
sparc64: Move request_irq() from ldc_bind() to ldc_alloc()
...
Pull powerpc updates from Michael Ellerman:
"Here's a first pull request for powerpc updates for 3.18.
The bulk of the additions are for the "cxl" driver, for IBM's Coherent
Accelerator Processor Interface (CAPI). Most of it's in drivers/misc,
which Greg & Arnd maintain, Greg said he was happy for us to take it
through our tree.
There's the usual minor cleanups and fixes, including a bit of noise
in drivers from some of those. A bunch of updates to our EEH code,
which has been getting more testing. Several nice speedups from
Anton, including 20% in clear_page().
And a bunch of updates for freescale from Scott"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux: (130 commits)
cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking
cxl: Add documentation for userspace APIs
cxl: Add driver to Kbuild and Makefiles
cxl: Add userspace header file
cxl: Driver code for powernv PCIe based cards for userspace access
cxl: Add base builtin support
powerpc/mm: Add hooks for cxl
powerpc/opal: Add PHB to cxl mode call
powerpc/mm: Add new hash_page_mm()
powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts
cxl: Add new header for call backs and structs
powerpc/powernv: Split out set MSI IRQ chip code
powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize
powerpc/msi: Improve IRQ bitmap allocator
powerpc/cell: Make spu_flush_all_slbs() generic
powerpc/cell: Move data segment faulting code out of cell platform
powerpc/cell: Move spu_handle_mm_fault() out of cell platform
powerpc/pseries: Use new defines when calling H_SET_MODE
powerpc: Update contact info in Documentation files
powerpc/perf/hv-24x7: Simplify catalog_read()
...
- Add pvscsi frontend and backend drivers.
- Remove _PAGE_IOMAP PTE flag, freeing it for alternate uses.
- Try and keep memory contiguous during PV memory setup (reduces
SWIOTLB usage).
- Allow front/back drivers to use threaded irqs.
- Support large initrds in PV guests.
- Fix PVH guests in preparation for Xen 4.5
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Merge tag 'stable/for-linus-3.18-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull Xen updates from David Vrabel:
"Features and fixes:
- Add pvscsi frontend and backend drivers.
- Remove _PAGE_IOMAP PTE flag, freeing it for alternate uses.
- Try and keep memory contiguous during PV memory setup (reduces
SWIOTLB usage).
- Allow front/back drivers to use threaded irqs.
- Support large initrds in PV guests.
- Fix PVH guests in preparation for Xen 4.5"
* tag 'stable/for-linus-3.18-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (22 commits)
xen: remove DEFINE_XENBUS_DRIVER() macro
xen/xenbus: Remove BUG_ON() when error string trucated
xen/xenbus: Correct the comments for xenbus_grant_ring()
x86/xen: Set EFER.NX and EFER.SCE in PVH guests
xen: eliminate scalability issues from initrd handling
xen: sync some headers with xen tree
xen: make pvscsi frontend dependant on xenbus frontend
arm{,64}/xen: Remove "EXPERIMENTAL" in the description of the Xen options
xen-scsifront: don't deadlock if the ring becomes full
x86: remove the Xen-specific _PAGE_IOMAP PTE flag
x86/xen: do not use _PAGE_IOMAP PTE flag for I/O mappings
x86: skip check for spurious faults for non-present faults
xen/efi: Directly include needed headers
xen-scsiback: clean up a type issue in scsiback_make_tpg()
xen-scsifront: use GFP_ATOMIC under spin_lock
MAINTAINERS: Add xen pvscsi maintainer
xen-scsiback: Add Xen PV SCSI backend driver
xen-scsifront: Add Xen PV SCSI frontend driver
xen: Add Xen pvSCSI protocol description
xen/events: support threaded irqs for interdomain event channels
...
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Merge tag 'locks-v3.18-1' of git://git.samba.org/jlayton/linux
Pull file locking related changes from Jeff Layton:
"This release is a little more busy for file locking changes than the
last:
- a set of patches from Kinglong Mee to fix the lockowner handling in
knfsd
- a pile of cleanups to the internal file lease API. This should get
us a bit closer to allowing for setlease methods that can block.
There are some dependencies between mine and Bruce's trees this cycle,
and I based my tree on top of the requisite patches in Bruce's tree"
* tag 'locks-v3.18-1' of git://git.samba.org/jlayton/linux: (26 commits)
locks: fix fcntl_setlease/getlease return when !CONFIG_FILE_LOCKING
locks: flock_make_lock should return a struct file_lock (or PTR_ERR)
locks: set fl_owner for leases to filp instead of current->files
locks: give lm_break a return value
locks: __break_lease cleanup in preparation of allowing direct removal of leases
locks: remove i_have_this_lease check from __break_lease
locks: move freeing of leases outside of i_lock
locks: move i_lock acquisition into generic_*_lease handlers
locks: define a lm_setup handler for leases
locks: plumb a "priv" pointer into the setlease routines
nfsd: don't keep a pointer to the lease in nfs4_file
locks: clean up vfs_setlease kerneldoc comments
locks: generic_delete_lease doesn't need a file_lock at all
nfsd: fix potential lease memory leak in nfs4_setlease
locks: close potential race in lease_get_mtime
security: make security_file_set_fowner, f_setown and __f_setown void return
locks: consolidate "nolease" routines
locks: remove lock_may_read and lock_may_write
lockd: rip out deferred lock handling from testlock codepath
NFSD: Get reference of lockowner when coping file_lock
...
Pull btrfs updates from Chris Mason:
"The largest set of changes here come from Miao Xie. He's cleaning up
and improving read recovery/repair for raid, and has a number of
related fixes.
I've merged another set of fsync fixes from Filipe, and he's also
improved the way we handle metadata write errors to make sure we force
the FS readonly if things go wrong.
Otherwise we have a collection of fixes and cleanups. Dave Sterba
gets a cookie for removing the most lines (thanks Dave)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (139 commits)
btrfs: Fix compile error when CONFIG_SECURITY is not set.
Btrfs: fix compiles when CONFIG_BTRFS_FS_RUN_SANITY_TESTS is off
btrfs: Make btrfs handle security mount options internally to avoid losing security label.
Btrfs: send, don't delay dir move if there's a new parent inode
btrfs: add more superblock checks
Btrfs: fix race in WAIT_SYNC ioctl
Btrfs: be aware of btree inode write errors to avoid fs corruption
Btrfs: remove redundant btrfs_verify_qgroup_counts declaration.
btrfs: fix shadow warning on cmp
Btrfs: fix compilation errors under DEBUG
Btrfs: fix crash of btrfs_release_extent_buffer_page
Btrfs: add missing end_page_writeback on submit_extent_page failure
btrfs: Fix the wrong condition judgment about subset extent map
Btrfs: fix build_backref_tree issue with multiple shared blocks
Btrfs: cleanup error handling in build_backref_tree
btrfs: move checks for DUMMY_ROOT into a helper
btrfs: new define for the inline extent data start
btrfs: kill extent_buffer_page helper
btrfs: drop constant param from btrfs_release_extent_buffer_page
btrfs: hide typecast to definition of BTRFS_SEND_TRANS_STUB
...
Pull UDF and quota updates from Jan Kara:
"A few UDF fixes and also a few patches which are preparing filesystems
for support of project quotas in VFS"
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
udf: Fix loading of special inodes
ocfs2: Back out change to use OCFS2_MAXQUOTAS in ocfs2_setattr()
udf: remove redundant sys_tz declaration
ocfs2: Don't use MAXQUOTAS value
reiserfs: Don't use MAXQUOTAS value
ext3: Don't use MAXQUOTAS value
udf: Fix race between write(2) and close(2)
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Merge tag 'ecryptfs-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs
Pull eCryptfs updates from Tyler Hicks:
"Minor code cleanups and a fix for when eCryptfs metadata is stored in
xattrs"
* tag 'ecryptfs-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
ecryptfs: remove unneeded buggy code in ecryptfs_do_create()
ecryptfs: avoid to access NULL pointer when write metadata in xattr
ecryptfs: remove unnecessary break after goto
ecryptfs: Remove unnecessary include of syscall.h in keystore.c
fs/ecryptfs/messaging.c: remove null test before kfree
ecryptfs: Drop cast
Use %pd in eCryptFS
which are now ignored (i_goal is basically a hint so it is safe to so this)
and another relating to the saving of the dirent location during rename.
There is one performance improvement, which is an optimisation in rgblk_free
so that multiple block deallocations will now be more efficient,
and one clean up patch to use _RET_IP_ rather than writing it out longhand.
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Merge tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw
Pull gfs2 updates from Steven Whitehouse:
"This time we have a couple of bug fixes, one relating to bad i_goal
values which are now ignored (i_goal is basically a hint so it is safe
to so this) and another relating to the saving of the dirent location
during rename.
There is one performance improvement, which is an optimisation in
rgblk_free so that multiple block deallocations will now be more
efficient, and one clean up patch to use _RET_IP_ rather than writing
it out longhand"
* tag 'gfs2-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-nmw:
GFS2: use _RET_IP_ instead of (unsigned long)__builtin_return_address(0)
GFS2: Use gfs2_rbm_incr in rgblk_free
GFS2: Make rename not save dirent location
GFS2: fix bad inode i_goal values during block allocation
This branch contains bug fixes and new features for the devicetree code.
Most of the changes are either new testcases for the selftest code or
documentation changes. The most notable change is the addition of a
phandle resolver for use when grafting in a second device tree blob into
the core tree. The resolver isn't currently used by anything other than
the selftest module, but it will be used to support device tree
overlays; probably in the v3.19 timeframe.
Also note that I've moved my normal tree from git.secretlab.ca to
git.kernel.org.
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Merge tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux
Pull devicetree changes from Grant Likely:
"This branch contains bug fixes and new features for the devicetree
code.
Most of the changes are either new testcases for the selftest code or
documentation changes. The most notable change is the addition of a
phandle resolver for use when grafting in a second device tree blob
into the core tree. The resolver isn't currently used by anything
other than the selftest module, but it will be used to support device
tree overlays; probably in the v3.19 timeframe.
Also note that I've moved my normal tree from git.secretlab.ca to
git.kernel.org"
* tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux:
of/selftest: Move hash table off stack to fix large frame size
To remove non-ascii characters in of_selftest.txt
of/selftest: Use the resolver to fixup phandles
of: Introduce Device Tree resolve support.
of/selftest: Add a test for duplicate phandles
of: Don't try to search when phandle == 0
of/selftest: Test structure of device tree
of: Fix NULL dereference in selftest removal code
of: add vendor prefix for Chipidea
of: Add vendor prefix for Innolux Corporation
of: Add vendor prefix for Sitronix
devicetree: bindings: Document Gateworks vendor prefix
of: Add vendor prefix for Energy Micro
dt/documentation: add specification of dma bus information
- Checkpatch fixes
- Removal of unused code in generic_bl
- Removal of superfluous .owner attribute
New drivers/supported devices
- None
(Re-)moved drivers
- None
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Merge tag 'backlight-for-linus-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight driver updates from Lee Jones:
"Changes to existing drivers:
- Checkpatch fixes
- Removal of unused code in generic_bl
- Removal of superfluous .owner attribute
No new or removed drivers/supported devices"
* tag 'backlight-for-linus-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: omap1: add blank line after declarations
backlight: jornada720: Remove 'else' after a return
backlight: jornada720: Remove 'else' after a return
backlight: wm831x_bl: Add blank line after declarations
backlight: tdo24m: Add blank line after declarations
backlight: s6e63m0: Remove 'else' after a return
backlight: pcf50633: Add blank line after declarations
backlight: lp855x: Add blank line after declarations
backlight: lms501kf03: Remove 'else' after a return
backlight: lm3639: Remove unnecessary return statements
backlight: ld9040: Remove 'else' after a return
backlight: ili922x: Remove 'else' after a return
backlight: cr_bllcd: Add blank line after declarations
backlight: corgi_lcd: Add blank line after declarations
backlight: ams369fg06: Remove 'else' after a return
backlight: adp8870: Add blank line after declarations
backlight: adp8860: Add blank line after declarations
backlight: adp5520: Add blank line after declarations
backlight: generic_bl: Remove unused function
backlight: Remove .owner field for drivers using module_platform_driver
- Fix SDIO IRQ bug.
- MMC regulator improvements.
- Fix slot-gpio card detect bug.
- Add support for Driver Stage Register.
- Convert the common MMC OF parser to use GPIO descriptors.
- Convert MMC_CAP2_NO_MULTI_READ into a callback, ->multi_io_quirk().
- Some additional minor fixes.
MMC host:
- mmci: Support Qualcomm specific DML layer for DMA.
- dw_mmc: Use common MMC regulators.
- dw_mmc: Add support for Rock-chips RK3288.
- tmio: Enable runtime PM support.
- tmio: Add support for R-Car Gen2 SoCs.
- tmio: Several fixes and improvements.
- omap_hsmmc: Removed Balaji from MAINTAINERS.
- jz4740: add DMA and pre/post support.
- sdhci: Add support for Intel Braswell.
- sdhci: Several fixes and improvements.
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Merge tag 'mmc-v3.18-1' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC updates from Ulf Hansson:
"MMC core:
- Fix SDIO IRQ bug
- MMC regulator improvements
- Fix slot-gpio card detect bug
- Add support for Driver Stage Register
- Convert the common MMC OF parser to use GPIO descriptors
- Convert MMC_CAP2_NO_MULTI_READ into a callback, ->multi_io_quirk()
- Some additional minor fixes
MMC host:
- mmci: Support Qualcomm specific DML layer for DMA
- dw_mmc: Use common MMC regulators
- dw_mmc: Add support for Rock-chips RK3288
- tmio: Enable runtime PM support
- tmio: Add support for R-Car Gen2 SoCs
- tmio: Several fixes and improvements
- omap_hsmmc: Removed Balaji from MAINTAINERS
- jz4740: add DMA and pre/post support
- sdhci: Add support for Intel Braswell
- sdhci: Several fixes and improvements"
* tag 'mmc-v3.18-1' of git://git.linaro.org/people/ulf.hansson/mmc: (119 commits)
ARM: dts: fix MMC2 regulators for Exynos5420 Arndale Octa board
mmc: sdhci-acpi: Fix Braswell eMMC timeout clock frequency
mmc: sdhci-acpi: Pass HID and UID to probe_slot
mmc: sdhci-acpi: Get UID directly from acpi_device
mmc, sdhci, bcm-kona, LLVMLinux: Remove use of __initconst
mmc: sdhci-pci: Fix Braswell eMMC timeout clock frequency
mmc: sdhci: Let a driver override timeout clock frequency
mmc: sdhci-pci: Add Bay Trail and Braswell SD card detect
mmc: sdhci-pci: Set SDHCI_QUIRK2_STOP_WITH_TC for Intel BYT host controllers
mmc: sdhci-acpi: Add a HID and UID for a SD Card host controller
mmc: sdhci-acpi: Set SDHCI_QUIRK2_STOP_WITH_TC for Intel host controllers
mmc: sdhci: Add quirk for always getting TC with stop cmd
mmc: core: restore detect line inversion semantics
mmc: Fix incorrect warning when setting 0 Hz via debugfs
mmc: Fix use of wrong device in mmc_gpiod_free_cd()
mmc: atmel-mci: fix mismatched section on atmci_cleanup_slot
mmc: rtsx_pci: Set power related cap2 macros
mmc: core: Add new power_mode MMC_POWER_UNDEFINED
mmc: sdhci: execute tuning when device is not busy
mmc: atmel-mci: Release mmc resources on failure in probe
..
