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  1. Nov 04, 2018
    • Larry Chen's avatar
      ocfs2: fix clusters leak in ocfs2_defrag_extent() · 6194ae42
      Larry Chen authored 
      ocfs2_defrag_extent() might leak allocated clusters.  When the file
system has insufficient space, the number of claimed clusters might be
less than the caller wants.  If that happens, the original code might
directly commit the transaction without returning clusters.

This patch is based on code in ocfs2_add_clusters_in_btree().

[akpm@linux-foundation.org: include localalloc.h, reduce scope of data_ac]
Link: http://lkml.kernel.org/r/20180904041621.16874-3-lchen@suse.com


Signed-off-by: default avatarLarry Chen <lchen@suse.com>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <ge.changwei@h3c.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6194ae42
    • Arnd Bergmann's avatar
      ocfs2: dlmglue: clean up timestamp handling · 3a3d1e51
      Arnd Bergmann authored 
      The handling of timestamps outside of the 1970..2038 range in the dlm
glue is rather inconsistent: on 32-bit architectures, this has always
wrapped around to negative timestamps in the 1902..1969 range, while on
64-bit kernels all timestamps are interpreted as positive 34 bit numbers
in the 1970..2514 year range.

Now that the VFS code handles 64-bit timestamps on all architectures, we
can make the behavior more consistent here, and return the same result
that we had on 64-bit already, making the file system y2038 safe in the
process.  Outside of dlmglue, it already uses 64-bit on-disk timestamps
anway, so that part is fine.

For consistency, I'm changing ocfs2_pack_timespec() to clamp anything
outside of the supported range to the minimum and maximum values.  This
avoids a possible ambiguity of values before 1970 in particular, which
used to be interpreted as times at the end of the 2514 range previously.

Link: http://lkml.kernel.org/r/20180619155826.4106487-1-arnd@arndb.de


Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <ge.changwei@h3c.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      3a3d1e51
    • Changwei Ge's avatar
      ocfs2: don't put and assigning null to bh allocated outside · cf76c785
      Changwei Ge authored 
      ocfs2_read_blocks() and ocfs2_read_blocks_sync() are both used to read
several blocks from disk.  Currently, the input argument *bhs* can be
NULL or NOT.  It depends on the caller's behavior.  If the function
fails in reading blocks from disk, the corresponding bh will be assigned
to NULL and put.

Obviously, above process for non-NULL input bh is not appropriate.
Because the caller doesn't even know its bhs are put and re-assigned.

If buffer head is managed by caller, ocfs2_read_blocks and
ocfs2_read_blocks_sync() should not evaluate it to NULL.  It will cause
caller accessing illegal memory, thus crash.

Link: http://lkml.kernel.org/r/HK2PR06MB045285E0F4FBB561F9F2F9B3D5680@HK2PR06MB0452.apcprd06.prod.outlook.com


Signed-off-by: default avatarChangwei Ge <ge.changwei@h3c.com>
Reviewed-by: default avatarGuozhonghua <guozhonghua@h3c.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <ge.changwei@h3c.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      cf76c785
    • Changwei Ge's avatar
      ocfs2: fix a misuse a of brelse after failing ocfs2_check_dir_entry · 29aa3016
      Changwei Ge authored 
      Somehow, file system metadata was corrupted, which causes
ocfs2_check_dir_entry() to fail in function ocfs2_dir_foreach_blk_el().

According to the original design intention, if above happens we should
skip the problematic block and continue to retrieve dir entry.  But
there is obviouse misuse of brelse around related code.

After failure of ocfs2_check_dir_entry(), current code just moves to
next position and uses the problematic buffer head again and again
during which the problematic buffer head is released for multiple times.
I suppose, this a serious issue which is long-lived in ocfs2.  This may
cause other file systems which is also used in a the same host insane.

So we should also consider about bakcporting this patch into linux
-stable.

Link: http://lkml.kernel.org/r/HK2PR06MB045211675B43EED794E597B6D56E0@HK2PR06MB0452.apcprd06.prod.outlook.com


Signed-off-by: default avatarChangwei Ge <ge.changwei@h3c.com>
Suggested-by: default avatarChangkuo Shi <shi.changkuo@h3c.com>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      29aa3016
    • Changwei Ge's avatar
      ocfs2: don't use iocb when EIOCBQUEUED returns · 9e985787
      Changwei Ge authored 
      When -EIOCBQUEUED returns, it means that aio_complete() will be called
from dio_complete(), which is an asynchronous progress against
write_iter.  Generally, IO is a very slow progress than executing
instruction, but we still can't take the risk to access a freed iocb.

And we do face a BUG crash issue.  Using the crash tool, iocb is
obviously freed already.

  crash> struct -x kiocb ffff881a350f5900
  struct kiocb {
    ki_filp = 0xffff881a350f5a80,
    ki_pos = 0x0,
    ki_complete = 0x0,
    private = 0x0,
    ki_flags = 0x0
  }

And the backtrace shows:
  ocfs2_file_write_iter+0xcaa/0xd00 [ocfs2]
  aio_run_iocb+0x229/0x2f0
  do_io_submit+0x291/0x540
  SyS_io_submit+0x10/0x20
  system_call_fastpath+0x16/0x75

Link: http://lkml.kernel.org/r/1523361653-14439-1-git-send-email-ge.changwei@h3c.com


Signed-off-by: default avatarChangwei Ge <ge.changwei@h3c.com>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      9e985787
    • Guozhonghua's avatar
      ocfs2: without quota support, avoid calling quota recovery · 21158ca8
      Guozhonghua authored 
      During one dead node's recovery by other node, quota recovery work will
be queued.  We should avoid calling quota when it is not supported, so
check the quota flags.

Link: http://lkml.kernel.org/r/71604351584F6A4EBAE558C676F37CA401071AC9FB@H3CMLB12-EX.srv.huawei-3com.com


Signed-off-by: default avatarguozhonghua <guozhonghua@h3c.com>
Reviewed-by: default avatarJan Kara <jack@suse.cz>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <ge.changwei@h3c.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      21158ca8
    • Gang He's avatar
      ocfs2: remove ocfs2_is_o2cb_active() · a6346447
      Gang He authored 
      Remove ocfs2_is_o2cb_active().  We have similar functions to identify
which cluster stack is being used via osb->osb_cluster_stack.

Secondly, the current implementation of ocfs2_is_o2cb_active() is not
totally safe.  Based on the design of stackglue, we need to get
ocfs2_stack_lock before using ocfs2_stack related data structures, and
that active_stack pointer can be NULL in the case of mount failure.

Link: http://lkml.kernel.org/r/1495441079-11708-1-git-send-email-ghe@suse.com


Signed-off-by: default avatarGang He <ghe@suse.com>
Reviewed-by: default avatarJoseph Qi <jiangqi903@gmail.com>
Reviewed-by: default avatarEric Ren <zren@suse.com>
Acked-by: default avatarChangwei Ge <ge.changwei@h3c.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      a6346447
    • Andrea Arcangeli's avatar
      mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings · ac5b2c18
      Andrea Arcangeli authored 
      THP allocation might be really disruptive when allocated on NUMA system
with the local node full or hard to reclaim.  Stefan has posted an
allocation stall report on 4.12 based SLES kernel which suggests the
same issue:

  kvm: page allocation stalls for 194572ms, order:9, mode:0x4740ca(__GFP_HIGHMEM|__GFP_IO|__GFP_FS|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_THISNODE|__GFP_MOVABLE|__GFP_DIRECT_RECLAIM), nodemask=(null)
  kvm cpuset=/ mems_allowed=0-1
  CPU: 10 PID: 84752 Comm: kvm Tainted: G        W 4.12.0+98-ph <a href="/view.php?id=1" title="[geschlossen] Integration Ramdisk" class="resolved">0000001</a> SLE15 (unreleased)
  Hardware name: Supermicro SYS-1029P-WTRT/X11DDW-NT, BIOS 2.0 12/05/2017
  Call Trace:
   dump_stack+0x5c/0x84
   warn_alloc+0xe0/0x180
   __alloc_pages_slowpath+0x820/0xc90
   __alloc_pages_nodemask+0x1cc/0x210
   alloc_pages_vma+0x1e5/0x280
   do_huge_pmd_wp_page+0x83f/0xf00
   __handle_mm_fault+0x93d/0x1060
   handle_mm_fault+0xc6/0x1b0
   __do_page_fault+0x230/0x430
   do_page_fault+0x2a/0x70
   page_fault+0x7b/0x80
   [...]
  Mem-Info:
  active_anon:126315487 inactive_anon:1612476 isolated_anon:5
   active_file:60183 inactive_file:245285 isolated_file:0
   unevictable:15657 dirty:286 writeback:1 unstable:0
   slab_reclaimable:75543 slab_unreclaimable:2509111
   mapped:81814 shmem:31764 pagetables:370616 bounce:0
   free:32294031 free_pcp:6233 free_cma:0
  Node 0 active_anon:254680388kB inactive_anon:1112760kB active_file:240648kB inactive_file:981168kB unevictable:13368kB isolated(anon):0kB isolated(file):0kB mapped:280240kB dirty:1144kB writeback:0kB shmem:95832kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 81225728kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no
  Node 1 active_anon:250583072kB inactive_anon:5337144kB active_file:84kB inactive_file:0kB unevictable:49260kB isolated(anon):20kB isolated(file):0kB mapped:47016kB dirty:0kB writeback:4kB shmem:31224kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 31897600kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no

The defrag mode is "madvise" and from the above report it is clear that
the THP has been allocated for MADV_HUGEPAGA vma.

Andrea has identified that the main source of the problem is
__GFP_THISNODE usage:

: The problem is that direct compaction combined with the NUMA
: __GFP_THISNODE logic in mempolicy.c is telling reclaim to swap very
: hard the local node, instead of failing the allocation if there's no
: THP available in the local node.
:
: Such logic was ok until __GFP_THISNODE was added to the THP allocation
: path even with MPOL_DEFAULT.
:
: The idea behind the __GFP_THISNODE addition, is that it is better to
: provide local memory in PAGE_SIZE units than to use remote NUMA THP
: backed memory. That largely depends on the remote latency though, on
: threadrippers for example the overhead is relatively low in my
: experience.
:
: The combination of __GFP_THISNODE and __GFP_DIRECT_RECLAIM results in
: extremely slow qemu startup with vfio, if the VM is larger than the
: size of one host NUMA node. This is because it will try very hard to
: unsuccessfully swapout get_user_pages pinned pages as result of the
: __GFP_THISNODE being set, instead of falling back to PAGE_SIZE
: allocations and instead of trying to allocate THP on other nodes (it
: would be even worse without vfio type1 GUP pins of course, except it'd
: be swapping heavily instead).

Fix this by removing __GFP_THISNODE for THP requests which are
requesting the direct reclaim.  This effectivelly reverts 5265047a
on the grounds that the zone/node reclaim was known to be disruptive due
to premature reclaim when there was memory free.  While it made sense at
the time for HPC workloads without NUMA awareness on rare machines, it
was ultimately harmful in the majority of cases.  The existing behaviour
is similar, if not as widespare as it applies to a corner case but
crucially, it cannot be tuned around like zone_reclaim_mode can.  The
default behaviour should always be to cause the least harm for the
common case.

If there are specialised use cases out there that want zone_reclaim_mode
in specific cases, then it can be built on top.  Longterm we should
consider a memory policy which allows for the node reclaim like behavior
for the specific memory ranges which would allow a

[1] http://lkml.kernel.org/r/20180820032204.9591-1-aarcange@redhat.com

Mel said:

: Both patches look correct to me but I'm responding to this one because
: it's the fix.  The change makes sense and moves further away from the
: severe stalling behaviour we used to see with both THP and zone reclaim
: mode.
:
: I put together a basic experiment with usemem configured to reference a
: buffer multiple times that is 80% the size of main memory on a 2-socket
: box with symmetric node sizes and defrag set to "always".  The defrag
: setting is not the default but it would be functionally similar to
: accessing a buffer with madvise(MADV_HUGEPAGE).  Usemem is configured to
: reference the buffer multiple times and while it's not an interesting
: workload, it would be expected to complete reasonably quickly as it fits
: within memory.  The results were;
:
: usemem
:                                   vanilla           noreclaim-v1
: Amean     Elapsd-1       42.78 (   0.00%)       26.87 (  37.18%)
: Amean     Elapsd-3       27.55 (   0.00%)        7.44 (  73.00%)
: Amean     Elapsd-4        5.72 (   0.00%)        5.69 (   0.45%)
:
: This shows the elapsed time in seconds for 1 thread, 3 threads and 4
: threads referencing buffers 80% the size of memory.  With the patches
: applied, it's 37.18% faster for the single thread and 73% faster with two
: threads.  Note that 4 threads showing little difference does not indicate
: the problem is related to thread counts.  It's simply the case that 4
: threads gets spread so their workload mostly fits in one node.
:
: The overall view from /proc/vmstats is more startling
:
:                          4.19.0-rc1  4.19.0-rc1
:                             vanillanoreclaim-v1r1
: Minor Faults               35593425      708164
: Major Faults                 484088          36
: Swap Ins                    3772837           0
: Swap Outs                   3932295           0
:
: Massive amounts of swap in/out without the patch
:
: Direct pages scanned        6013214           0
: Kswapd pages scanned              0           0
: Kswapd pages reclaimed            0           0
: Direct pages reclaimed      4033009           0
:
: Lots of reclaim activity without the patch
:
: Kswapd efficiency              100%        100%
: Kswapd velocity               0.000       0.000
: Direct efficiency               67%        100%
: Direct velocity           11191.956       0.000
:
: Mostly from direct reclaim context as you'd expect without the patch.
:
: Page writes by reclaim  3932314.000       0.000
: Page writes file                 19           0
: Page writes anon            3932295           0
: Page reclaim immediate        42336           0
:
: Writes from reclaim context is never good but the patch eliminates it.
:
: We should never have default behaviour to thrash the system for such a
: basic workload.  If zone reclaim mode behaviour is ever desired but on a
: single task instead of a global basis then the sensible option is to build
: a mempolicy that enforces that behaviour.

This was a severe regression compared to previous kernels that made
important workloads unusable and it starts when __GFP_THISNODE was
added to THP allocations under MADV_HUGEPAGE.  It is not a significant
risk to go to the previous behavior before __GFP_THISNODE was added, it
worked like that for years.

This was simply an optimization to some lucky workloads that can fit in
a single node, but it ended up breaking the VM for others that can't
possibly fit in a single node, so going back is safe.

[mhocko@suse.com: rewrote the changelog based on the one from Andrea]
Link: http://lkml.kernel.org/r/20180925120326.24392-2-mhocko@kernel.org
Fixes: 5265047a

 ("mm, thp: really limit transparent hugepage allocation to local node")
Signed-off-by: default avatarAndrea Arcangeli <aarcange@redhat.com>
Signed-off-by: default avatarMichal Hocko <mhocko@suse.com>
Reported-by: default avatarStefan Priebe <s.priebe@profihost.ag>
Debugged-by: default avatarAndrea Arcangeli <aarcange@redhat.com>
Reported-by: default avatarAlex Williamson <alex.williamson@redhat.com>
Reviewed-by: default avatarMel Gorman <mgorman@techsingularity.net>
Tested-by: default avatarMel Gorman <mgorman@techsingularity.net>
Cc: Zi Yan <zi.yan@cs.rutgers.edu>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: David Rientjes <rientjes@google.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: <stable@vger.kernel.org>	[4.1+]
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      ac5b2c18
    • Sam Protsenko's avatar
      include/linux/notifier.h: SRCU: fix ctags · 94e297c5
      Sam Protsenko authored 
      ctags indexing ("make tags" command) throws this warning:

    ctags: Warning: include/linux/notifier.h:125:
    null expansion of name pattern "\1"

This is the result of DEFINE_PER_CPU() macro expansion.  Fix that by
getting rid of line break.

Similar fix was already done in commit 25528213 ("tags: Fix
DEFINE_PER_CPU expansions"), but this one probably wasn't noticed.

Link: http://lkml.kernel.org/r/20181030202808.28027-1-semen.protsenko@linaro.org
Fixes: 9c80172b

 ("kernel/SRCU: provide a static initializer")
Signed-off-by: default avatarSam Protsenko <semen.protsenko@linaro.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      94e297c5
    • Roman Gushchin's avatar
      mm: handle no memcg case in memcg_kmem_charge() properly · e68599a3
      Roman Gushchin authored 
      Mike Galbraith reported a regression caused by the commit 9b6f7e16
("mm: rework memcg kernel stack accounting") on a system with
"cgroup_disable=memory" boot option: the system panics with the following
stack trace:

  BUG: unable to handle kernel NULL pointer dereference at 00000000000000f8
  PGD 0 P4D 0
  Oops: 0002 [#1] PREEMPT SMP PTI
  CPU: 0 PID: 1 Comm: systemd Not tainted 4.19.0-preempt+ #410
  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20180531_142017-buildhw-08.phx2.fed4
  RIP: 0010:page_counter_try_charge+0x22/0xc0
  Code: 41 5d c3 c3 0f 1f 40 00 0f 1f 44 00 00 48 85 ff 0f 84 a7 00 00 00 41 56 48 89 f8 49 89 fe 49
  Call Trace:
   try_charge+0xcb/0x780
   memcg_kmem_charge_memcg+0x28/0x80
   memcg_kmem_charge+0x8b/0x1d0
   copy_process.part.41+0x1ca/0x2070
   _do_fork+0xd7/0x3d0
   do_syscall_64+0x5a/0x180
   entry_SYSCALL_64_after_hwframe+0x49/0xbe

The problem occurs because get_mem_cgroup_from_current() returns the NULL
pointer if memory controller is disabled.  Let's check if this is a case
at the beginning of memcg_kmem_charge() and just return 0 if
mem_cgroup_disabled() returns true.  This is how we handle this case in
many other places in the memory controller code.

Link: http://lkml.kernel.org/r/20181029215123.17830-1-guro@fb.com
Fixes: 9b6f7e16

 ("mm: rework memcg kernel stack accounting")
Signed-off-by: default avatarRoman Gushchin <guro@fb.com>
Reported-by: default avatarMike Galbraith <efault@gmx.de>
Acked-by: default avatarRik van Riel <riel@surriel.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Shakeel Butt <shakeelb@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      e68599a3
  3. Nov 03, 2018
    • Linus Torvalds's avatar
      Merge tag 'for-linus-20181102' of git://git.kernel.dk/linux-block · 5f215853
      Linus Torvalds authored 
      Pull block layer fixes from Jens Axboe:
 "The biggest part of this pull request is the revert of the blkcg
  cleanup series. It had one fix earlier for a stacked device issue, but
  another one was reported. Rather than play whack-a-mole with this,
  revert the entire series and try again for the next kernel release.

  Apart from that, only small fixes/changes.

  Summary:

   - Indentation fixup for mtip32xx (Colin Ian King)

   - The blkcg cleanup series revert (Dennis Zhou)

   - Two NVMe fixes. One fixing a regression in the nvme request
     initialization in this merge window, causing nvme-fc to not work.
     The other is a suspend/resume p2p resource issue (James, Keith)

   - Fix sg discard merge, allowing us to merge in cases where we didn't
     before (Jianchao Wang)

   - Call rq_qos_exit() after the queue is frozen, preventing a hang
     (Ming)

   - Fix brd queue setup, fixing an oops if we fail setting up all
     devices ...
      5f215853
    • Linus Torvalds's avatar
      Merge tag 'pwm/for-4.20-rc1' of... · fcc37f76
      Linus Torvalds authored 
      Merge tag 'pwm/for-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This series contains a number of improvements to existing drivers,
  such as LPSS. Some drivers, such as renesas-tpu and rcar get support
  for more SoC generations. To round things off this fixes an issue with
  the sysfs interface"

* tag 'pwm/for-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: lpss: Only set update bit if we are actually changing the settings
  pwm: lpss: Force runtime-resume on suspend on Cherry Trail
  pwm: Enable TI ECAP driver for ARCH_K3
  dt-bindings: pwm: tiecap: Add TI AM654 SoC specific compatible
  dt-bindings: pwm: rcar: Add r8a774a1 support
  pwm: Send a uevent on the pwmchip device upon channel sysfs (un)export
  Revert "pwm: Set class for exported channels in sysfs"
  dt-bindings: pwm: renesas-tpu: Document r8a7744 support
  dt-bindings: pwm: rcar: Add r8a7744 support
  dt-bindings: pwm: ...
      fcc37f76
    • Linus Torvalds's avatar
      Merge tag 'edac_for_4.20_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp · 0b21f21a
      Linus Torvalds authored 
      Pull more EDAC updates from Borislav Petkov:
 "The second part of the EDAC pile which contains the ADXL user and a
  build fix which addresses a not-so-sensical .config but fixes
  randconfig builds people do:

   - skx_edac: Address translation for NVDIMMs (Tony Luck and Qiuxu Zhuo)

   - ACPI_ADXL build fix"

[ I don't think "sensical" is a word, particularly when used in the
  context of actually meaning "nonsensical", but I like it   - Linus ]

* tag 'edac_for_4.20_2' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  EDAC, skx: Fix randconfig builds
  EDAC, skx_edac: Add address translation for non-volatile DIMMs
      0b21f21a
    • Linus Torvalds's avatar
      Merge tag 'sound-fix-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound · 54480aa7
      Linus Torvalds authored 
      Pull sound fixes from Takashi Iwai:
 "A few device-specific fixes: a fix for SPDIF on old Creative PCI
  board, and two additional fixes for the recent changes in FireWire
  audio stack"

* tag 'sound-fix-4.20-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: firewire-lib: fix insufficient PCM rule for period/buffer size
  ALSA: ca0106: Disable IZD on SB0570 DAC to fix audio pops
  ALSA: dice: fix to wait for releases of all ALSA character devices
      54480aa7
    • Linus Torvalds's avatar
      Merge tag 'drm-next-2018-11-02' of git://anongit.freedesktop.org/drm/drm · bc6080ae
      Linus Torvalds authored 
      Pull drm fixes from Dave Airlie:
 "Pretty much a normal fixes pull pre-rc1, mostly amdgpu fixes, one i915
  link training regression fix, and a couple of minor panel/bridge fixes
  and a panel quirk"

* tag 'drm-next-2018-11-02' of git://anongit.freedesktop.org/drm/drm: (37 commits)
  drm/amdgpu: revert "enable gfxoff in non-sriov and stutter mode by default"
  drm/amd/pp: Print warning if od_sclk/mclk out of range
  drm/amd/pp: Fix pp_sclk/mclk_od not work on Vega10
  drm/amd/pp: Fix pp_sclk/mclk_od not work on smu7
  drm/amd/powerplay: no MGPU fan boost enablement on DPM disabled
  drm/amdgpu: Fix skipping hangged job reset during gpu recover.
  drm/amd/powerplay: revise Vega20 pptable version check
  drm/amd/display: set backlight level limit to 1
  drm/panel: simple: Innolux TV123WAM is actually P120ZDG-BF1
  dt-bindings: drm/panel: simple: Innolux TV123WAM is actually P120ZDG-BF1
  drm/bridge: ti-sn65dsi86: Remove the mystery delay
  drm/panel: simple: Add "no-hpd" delay for Innolux TV123WAM
  drm/panel: simple: Support panels with HPD where HPD isn't connected
  dt-bindings: drm/panel: simple: Add no-hpd property
  drm/edid: Add 6 bpc quirk for BOE panel.
  drm/amdgpu: fix reporting of failed msg sent to SMU (v2)
  drm/amdgpu: Fix compute ring 1.0.0 failure after reset
  drm/amdgpu: fix VM leaf walking
  drm/amdgpu: fix amdgpu_vm_fini
  drm/amd/powerplay: commonize the API for retrieving current clocks
  ...
      bc6080ae
    • Linus Torvalds's avatar
      Merge tag 'apparmor-pr-2018-11-01' of... · d81f50bd
      Linus Torvalds authored 
      Merge tag 'apparmor-pr-2018-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor

Pull apparmor updates from John Johansen:
 "Features/Improvements:
   - replace spin_is_locked() with lockdep
   - add base support for secmark labeling and matching

  Cleanups:
   - clean an indentation issue, remove extraneous space
   - remove no-op permission check in policy_unpack
   - fix checkpatch missing spaces error in Parse secmark policy
   - fix network performance issue in aa_label_sk_perm

  Bug fixes:
   - add #ifdef checks for secmark filtering
   - fix an error code in __aa_create_ns()
   - don't try to replace stale label in ptrace checks
   - fix failure to audit context info in build_change_hat
   - check buffer bounds when mapping permissions mask
   - fully initialize aa_perms struct when answering userspace query
   - fix uninitialized value in aa_split_fqname"

* tag 'apparmor-pr-2018-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor:
  apparmor: clean an ...
      d81f50bd
    • Linus Torvalds's avatar
      Merge tag 'xfs-4.20-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux · c2aa1a44
      Linus Torvalds authored 
      Pull vfs dedup fixes from Dave Chinner:
 "This reworks the vfs data cloning infrastructure.

  We discovered many issues with these interfaces late in the 4.19 cycle
  - the worst of them (data corruption, setuid stripping) were fixed for
  XFS in 4.19-rc8, but a larger rework of the infrastructure fixing all
  the problems was needed. That rework is the contents of this pull
  request.

  Rework the vfs_clone_file_range and vfs_dedupe_file_range
  infrastructure to use a common .remap_file_range method and supply
  generic bounds and sanity checking functions that are shared with the
  data write path. The current VFS infrastructure has problems with
  rlimit, LFS file sizes, file time stamps, maximum filesystem file
  sizes, stripping setuid bits, etc and so they are addressed in these
  commits.

  We also introduce the ability for the ->remap_file_range methods to
  return short clones so that clones for vfs_copy_file_range() don't get
  rejected if the entire range can't be cloned. It also allows
  filesystems to sliently skip deduplication of partial EOF blocks if
  they are not capable of doing so without requiring errors to be thrown
  to userspace.

  Existing filesystems are converted to user the new remap_file_range
  method, and both XFS and ocfs2 are modified to make use of the new
  generic checking infrastructure"

* tag 'xfs-4.20-merge-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (28 commits)
  xfs: remove [cm]time update from reflink calls
  xfs: remove xfs_reflink_remap_range
  xfs: remove redundant remap partial EOF block checks
  xfs: support returning partial reflink results
  xfs: clean up xfs_reflink_remap_blocks call site
  xfs: fix pagecache truncation prior to reflink
  ocfs2: remove ocfs2_reflink_remap_range
  ocfs2: support partial clone range and dedupe range
  ocfs2: fix pagecache truncation prior to reflink
  ocfs2: truncate page cache for clone destination file before remapping
  vfs: clean up generic_remap_file_range_prep return value
  vfs: hide file range comparison function
  vfs: enable remap callers that can handle short operations
  vfs: plumb remap flags through the vfs dedupe functions
  vfs: plumb remap flags through the vfs clone functions
  vfs: make remap_file_range functions take and return bytes completed
  vfs: remap helper should update destination inode metadata
  vfs: pass remap flags to generic_remap_checks
  vfs: pass remap flags to generic_remap_file_range_prep
  vfs: combine the clone and dedupe into a single remap_file_range
  ...
      c2aa1a44
    • Linus Torvalds's avatar
      Merge tag 'powerpc-4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux · b69f9e17
      Linus Torvalds authored 
      Pull powerpc fixes from Michael Ellerman:
 "Some things that I missed due to travel, or that came in late.

  Two fixes also going to stable:

   - A revert of a buggy change to the 8xx TLB miss handlers.

   - Our flushing of SPE (Signal Processing Engine) registers on fork
     was broken.

  Other changes:

   - A change to the KVM decrementer emulation to use proper APIs.

   - Some cleanups to the way we do code patching in the 8xx code.

   - Expose the maximum possible memory for the system in
     /proc/powerpc/lparcfg.

   - Merge some updates from Scott: "a couple device tree updates, and a
     fix for a missing prototype warning"

  A few other minor fixes and a handful of fixes for our selftests.

  Thanks to: Aravinda Prasad, Breno Leitao, Camelia Groza, Christophe
  Leroy, Felipe Rechia, Joel Stanley, Naveen N. Rao, Paul Mackerras,
  Scott Wood, Tyrel Datwyler"

* tag 'powerpc-4.20-2' of git://git.kern...
      b69f9e17
    • Linus Torvalds's avatar
      Merge tag 'riscv-for-linus-4.20-mw3' of... · 63c6e188
      Linus Torvalds authored 
      Merge tag 'riscv-for-linus-4.20-mw3' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux

Pull RISC-V defconfig update from Palmer Dabbelt:
 "Sorry for the last minute patches, but it was suggested we try to push
  this in before rc1 to make it easier for people to keep their branch
  rebases sane"

* tag 'riscv-for-linus-4.20-mw3' of git://git.kernel.org/pub/scm/linux/kernel/git/palmer/riscv-linux:
  RISC-V: refresh defconfig
      63c6e188
  5. Nov 02, 2018