sfrench/cifs-2.6.git
4 years agoreiserfs: Remove useless setting of i_flags
Jan Kara [Tue, 11 Apr 2017 14:43:51 +0000 (16:43 +0200)]
reiserfs: Remove useless setting of i_flags

reiserfs_new_inode() clears IMMUTABLE and APPEND flags from a symlink
i_flags however a few lines below in sd_attrs_to_i_attrs() we will
happily overwrite i_flags with whatever we inherited from the directory.
Since this behavior is there for ages just remove the useless setting of
i_flags.

Signed-off-by: Jan Kara <jack@suse.cz>
4 years agojfs: Remove jfs_get_inode_flags()
Jan Kara [Tue, 11 Apr 2017 14:37:49 +0000 (16:37 +0200)]
jfs: Remove jfs_get_inode_flags()

Now that all places setting inode->i_flags that should be reflected in
on-disk flags are gone, we can remove jfs_get_inode_flags() call.

Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoext2: Remove ext2_get_inode_flags()
Jan Kara [Tue, 11 Apr 2017 14:33:50 +0000 (16:33 +0200)]
ext2: Remove ext2_get_inode_flags()

Now that all places setting inode->i_flags that should be reflected in
on-disk flags are gone, we can remove ext2_get_inode_flags() call.

Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoext4: Remove ext4_get_inode_flags()
Jan Kara [Thu, 6 Apr 2017 13:44:23 +0000 (15:44 +0200)]
ext4: Remove ext4_get_inode_flags()

Now that all places setting inode->i_flags that should be reflected in
on-disk flags are gone, we can remove ext4_get_inode_flags() call.

Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoquota: Stop setting IMMUTABLE and NOATIME flags on quota files
Jan Kara [Tue, 11 Apr 2017 14:29:12 +0000 (16:29 +0200)]
quota: Stop setting IMMUTABLE and NOATIME flags on quota files

Currently we set IMMUTABLE and NOATIME flags on quota files to stop
userspace from messing with them. Now that all filesystems set these
flags in their quota_on handlers, we can stop setting the flags in
generic quota code. This will allow filesystems to stop copying i_flags
to their on-disk flags on various occasions.

Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Signed-off-by: Jan Kara <jack@suse.cz>
4 years agojfs: Set flags on quota files directly
Jan Kara [Tue, 11 Apr 2017 14:21:01 +0000 (16:21 +0200)]
jfs: Set flags on quota files directly

Currently immutable and noatime flags on quota files are set by quota
code which requires us to copy inode->i_flags to our on disk version
of quota flags in GETFLAGS ioctl and copy_to_dinode(). Move to
setting / clearing these on-disk flags directly to save that copying.

Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoext2: Set flags on quota files directly
Jan Kara [Thu, 6 Apr 2017 15:02:09 +0000 (17:02 +0200)]
ext2: Set flags on quota files directly

Currently immutable and noatime flags on quota files are set by quota
code which requires us to copy inode->i_flags to our on disk version of
quota flags in GETFLAGS ioctl and __ext2_write_inode().  Move to setting
/ clearing these on-disk flags directly to save that copying.

Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoreiserfs: Set flags on quota files directly
Jan Kara [Thu, 6 Apr 2017 14:34:53 +0000 (16:34 +0200)]
reiserfs: Set flags on quota files directly

Currently immutable and noatime flags on quota files are set by quota
code which requires us to copy inode->i_flags to our on disk version of
quota flags in GETFLAGS ioctl and when writing stat item. Move to
setting / clearing these on-disk flags directly to save that copying.

Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoext4: Set flags on quota files directly
Jan Kara [Thu, 6 Apr 2017 13:40:06 +0000 (15:40 +0200)]
ext4: Set flags on quota files directly

Currently immutable and noatime flags on quota files are set by quota
code which requires us to copy inode->i_flags to our on disk version of
quota flags in GETFLAGS ioctl and ext4_do_update_inode(). Move to
setting / clearing these on-disk flags directly to save that copying.

Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoreiserfs: Protect dquot_writeback_dquots() by s_umount semaphore
Jan Kara [Wed, 5 Apr 2017 12:17:30 +0000 (14:17 +0200)]
reiserfs: Protect dquot_writeback_dquots() by s_umount semaphore

dquot_writeback_dquots() expects s_umount semaphore to be held to
protect it from other concurrent quota operations. reiserfs_sync_fs()
can call dquot_writeback_dquots() without holding s_umount semaphore
when called from flush_old_commits().

Fix the problem by grabbing s_umount in flush_old_commits(). However we
have to be careful and use only trylock since reiserfs_cancel_old_sync()
can be waiting for flush_old_commits() to complete while holding
s_umount semaphore. Possible postponing of sync work is not a big deal
though as that is only an opportunistic flush.

Fixes: 9d1ccbe70e0b14545caad12dc73adb3605447df0
Reported-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoreiserfs: Make cancel_old_flush() reliable
Jan Kara [Wed, 5 Apr 2017 12:09:48 +0000 (14:09 +0200)]
reiserfs: Make cancel_old_flush() reliable

Currently canceling of delayed work that flushes old data using
cancel_old_flush() does not prevent work from being requeued. Thus
in theory new work can be queued after cancel_old_flush() from
reiserfs_freeze() has run. This will become larger problem once
flush_old_commits() can requeue the work itself.

Fix the problem by recording in sbi->work_queue that flushing work is
canceled and should not be requeued.

Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoext2: Call dquot_writeback_dquots() with s_umount held
Jan Kara [Wed, 5 Apr 2017 11:32:52 +0000 (13:32 +0200)]
ext2: Call dquot_writeback_dquots() with s_umount held

ext2_sync_fs() could be called without s_umount semaphore held when
called through ext2_write_super() from __ext2_write_inode(). This
function then calls dquot_writeback_dquots() which relies on s_umount to
be held for protection against other quota operations.

In fact __ext2_write_inode() does not need all the functionality
ext2_write_super() provides. It is enough to just write the superblock.
So use ext2_sync_super() instead.

Fixes: 9d1ccbe70e0b14545caad12dc73adb3605447df0
Reported-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Jan Kara <jack@suse.cz>
4 years agoreiserfs: avoid a -Wmaybe-uninitialized warning
Arnd Bergmann [Thu, 23 Mar 2017 15:06:13 +0000 (16:06 +0100)]
reiserfs: avoid a -Wmaybe-uninitialized warning

The latest gcc-7.0.1 snapshot warns about an unintialized variable use:

In file included from fs/reiserfs/lbalance.c:8:0:
fs/reiserfs/lbalance.c: In function 'leaf_item_bottle.isra.3':
fs/reiserfs/reiserfs.h:1279:13: error: '*((void *)&n_ih+8).v' may be used uninitialized in this function [-Werror=maybe-uninitialized]
  v2->v = (v2->v & cpu_to_le64(15ULL << 60)) | cpu_to_le64(offset);
           ~~^~~
fs/reiserfs/reiserfs.h:1279:13: error: '*((void *)&n_ih+8).v' may be used uninitialized in this function [-Werror=maybe-uninitialized]
  v2->v = (v2->v & cpu_to_le64(15ULL << 60)) | cpu_to_le64(offset);

This happens because the offset/type pair that is stored in
ih.key.u.k_offset_v2 is actually uninitialized when we call
set_le_ih_k_offset() and set_le_ih_k_type(). After we have called both,
all data is correct, but the first of the two reads uninitialized data
for the type field and writes it back before it gets overwritten.

This works around the warning by initializing the k_offset_v2 through
the slightly larger memcpy().

[JK: Remove now unused define and make it obvious we initialize the key]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jan Kara <jack@suse.cz>
4 years agomm, swap: Remove WARN_ON_ONCE() in free_swap_slot()
Huang Ying [Mon, 20 Mar 2017 06:26:42 +0000 (14:26 +0800)]
mm, swap: Remove WARN_ON_ONCE() in free_swap_slot()

Before commit 452b94b8c8c7 ("mm/swap: don't BUG_ON() due to
uninitialized swap slot cache"), the following bug is reported,

  ------------[ cut here ]------------
  kernel BUG at mm/swap_slots.c:270!
  invalid opcode: 0000 [#1] SMP
  CPU: 5 PID: 1745 Comm: (sd-pam) Not tainted 4.11.0-rc1-00243-g24c534bb161b #1
  Hardware name: System manufacturer System Product Name/Z170-K, BIOS 1803 05/06/2016
  RIP: 0010:free_swap_slot+0xba/0xd0
  Call Trace:
   swap_free+0x36/0x40
   do_swap_page+0x360/0x6d0
   __handle_mm_fault+0x880/0x1080
   handle_mm_fault+0xd0/0x240
   __do_page_fault+0x232/0x4d0
   do_page_fault+0x20/0x70
   page_fault+0x22/0x30
  ---[ end trace aefc9ede53e0ab21 ]---

This is raised by the BUG_ON(!swap_slot_cache_initialized) in
free_swap_slot().  This is incorrect, because even if the swap slots
cache fails to be initialized, the swap should operate properly without
the swap slots cache.  And the use_swap_slot_cache check later in the
function will protect the uninitialized swap slots cache case.

In commit 452b94b8c8c7, the BUG_ON() is replaced by WARN_ON_ONCE().  In
the patch, the WARN_ON_ONCE() is removed too.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Tue, 21 Mar 2017 20:10:17 +0000 (13:10 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Nine small fixes: the biggest is probably finally sorting out Kconfig
  issues with lpfc nvme.  There are some performance fixes for megaraid
  and hpsa and a static checker fix"

[ Johannes Thumshirn points out that there still seems to be more lpfc
  vs nvme config issues.  Oh well.   - Linus ]

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: lpfc: Finalize Kconfig options for nvme
  scsi: ufs: don't check unsigned type for a negative value
  scsi: hpsa: do not timeout reset operations
  scsi: hpsa: limit outstanding rescans
  scsi: hpsa: update check for logical volume status
  scsi: megaraid_sas: Driver version upgrade
  scsi: megaraid_sas: raid6 also require cpuSel check same as raid5
  scsi: megaraid_sas: add correct return type check for ldio hint logic for raid1
  scsi: megaraid_sas: enable intx only if msix request fails

4 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Tue, 21 Mar 2017 20:07:18 +0000 (13:07 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

Pull HID fixes from Jiri Kosina:

 - regression fixes for Wacom devices, from Aaron Armstrong Skomra and
   Ping Cheng

 - memory leak in hid-sony driver from Roderick Colenbrander

 - new device IDs support from Oscar Campos and Daniel Drake

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: wacom: generic: Wacom mouse is only provided for opaque tablets
  HID: corsair: Add driver Scimitar Pro RGB gaming mouse 1b1c:1b3e support to hid-corsair
  HID: corsair: support for K65-K70 Rapidfire and Scimitar Pro RGB
  HID: wacom: don't manually release resources for the EKR
  HID: wacom: Correct Intuos Pro 2 resolution
  HID: sony: Fix input device leak when connecting a DS4 twice using USB/BT
  HID: chicony: Add support for another ASUS Zen AiO keyboard

4 years agoMerge tag 'gpio-v4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Tue, 21 Mar 2017 20:01:53 +0000 (13:01 -0700)]
Merge tag 'gpio-v4.11-2' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "Here is the first set of GPIO fixes for 4.11. It was delayed a bit
  beacuse I was chicken when linux-next was not rotating last week.

  This hits the ST serial driver in drivers/tty/serial and that has an
  ACK from Greg, he suggested to keep the old GPIO fwnode API around to
  smoothen things in the merge Windod and those have now served their
  purpose so we take them out and convert the last driver to the new
  API.

  Apart from that it's fixes as usual.

  Summary:

   - set the parent on the Altera A10SR driver, also fix high level
     IRQs.

   - fix error path on the mockup driver.

   - compilation noise about unused functions fixed.

   - fix missed interrupts on the MCP23S08 expander, this is also tagged
     for stable.

   - retire the interrim helpers devm_get_gpiod_from_child() used to
     smoothen merging in the merge window"

* tag 'gpio-v4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio:mcp23s08 Fixed missing interrupts
  serial: st-asc: Use new GPIOD API to obtain RTS pin
  gpio: altera: Use handle_level_irq when configured as a level_high
  gpio: xgene: mark PM functions as __maybe_unused
  gpio: mockup: return -EFAULT if copy_from_user() fails
  gpio: altera-a10sr: Set gpio_chip parent property

4 years agoMerge tag 'rproc-v4.11-fixes' of git://github.com/andersson/remoteproc
Linus Torvalds [Tue, 21 Mar 2017 19:54:12 +0000 (12:54 -0700)]
Merge tag 'rproc-v4.11-fixes' of git://github.com/andersson/remoteproc

Pull remoteproc fix from Bjorn Andersson:
 "This fixes a Kbuild dependency issue related to the Qualcomm
  remoteproc drivers"

* tag 'rproc-v4.11-fixes' of git://github.com/andersson/remoteproc:
  remoteproc: qcom: fix QCOM_SMD dependencies

4 years agoMerge tag 'for-f2fs-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeu...
Linus Torvalds [Tue, 21 Mar 2017 19:27:06 +0000 (12:27 -0700)]
Merge tag 'for-f2fs-4.11-rc4' of git://git./linux/kernel/git/jaegeuk/f2fs

Pull f2fs fixes from Jaegeuk Kim:

 - fix performance regression reported by lkp-rebot

 - fix potential data lost after power-cut due to SSR reallocation

* tag 'for-f2fs-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
  f2fs: combine nat_bits and free_nid_bitmap cache
  f2fs: skip scanning free nid bitmap of full NAT blocks
  f2fs: use __set{__clear}_bit_le
  f2fs: declare static functions
  f2fs: don't overwrite node block by SSR

4 years agoHID: wacom: generic: Wacom mouse is only provided for opaque tablets
Ping Cheng [Wed, 15 Mar 2017 00:08:16 +0000 (17:08 -0700)]
HID: wacom: generic: Wacom mouse is only provided for opaque tablets

Commit f85c9dc ("Support tool ID and additional tool types") introduced mouse
and lens cursor tools to generic codepath, which covers both display (direct)
and opaque tablets (indirect devices). However, mouse and lens cursor tools are
only provided for opaque tablets. This patch ignores mouse and lens cursor tools
if the device is a display tablet.

Signed-off-by: Ping Cheng <ping.cheng@wacom.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
4 years agoHID: corsair: Add driver Scimitar Pro RGB gaming mouse 1b1c:1b3e support to hid-corsair
Oscar Campos [Mon, 6 Mar 2017 21:02:39 +0000 (21:02 +0000)]
HID: corsair: Add driver Scimitar Pro RGB gaming mouse 1b1c:1b3e support to hid-corsair

This mouse sold by Corsair as Scimitar PRO RGB defines two consecutive
Logical Minimum items in its Application (Consumer.0001) report making
it non parseable. This patch fixes the report descriptor overriding
byte 77 in rdesc from 0x16 (Logical Minimum with 16 bits value) to 0x26
(Logical Maximum with 16 bits value).

Signed-off-by: Oscar Campos <oscar.campos@member.fsf.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
4 years agoHID: corsair: support for K65-K70 Rapidfire and Scimitar Pro RGB
Oscar Campos [Fri, 10 Feb 2017 18:23:00 +0000 (18:23 +0000)]
HID: corsair: support for K65-K70 Rapidfire and Scimitar Pro RGB

Add quirks for several corsair gaming devices to avoid long delays on
report initialization

Supported devices:

 - Corsair K65RGB Rapidfire Gaming Keyboard
 - Corsair K70RGB Rapidfire Gaming Keyboard
 - Corsair Scimitar Pro RGB Gaming Mouse

Signed-off-by: Oscar Campos <oscar.campos@member.fsf.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
4 years agoHID: wacom: don't manually release resources for the EKR
Aaron Armstrong Skomra [Mon, 6 Mar 2017 18:54:58 +0000 (10:54 -0800)]
HID: wacom: don't manually release resources for the EKR

Commit 5b779fc introduces the manual release of resources in wacom_remove() as
an addition to the driver's use of devm.  The EKR resources can only be
released through wacom_remote_destroy_one() so we skip the manual release for
it.

Fixes: 5b779fc ("HID: wacom: release the resources before leaving despite devm")
Signed-off-by: Aaron Armstrong Skomra <skomra@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
4 years agoHID: wacom: Correct Intuos Pro 2 resolution
Aaron Armstrong Skomra [Mon, 6 Mar 2017 18:54:57 +0000 (10:54 -0800)]
HID: wacom: Correct Intuos Pro 2 resolution

The features struct for the second gen Intuos Pro uses the wrong constant for
the resolution. This fix is for commit 4922cd2.

Fixes: 4922cd2 ("HID: wacom: Support 2nd-gen Intuos Pro's Bluetooth classic interface")
Signed-off-by: Aaron Armstrong Skomra <skomra@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
4 years agoremoteproc: qcom: fix QCOM_SMD dependencies
Arnd Bergmann [Mon, 13 Mar 2017 16:36:25 +0000 (17:36 +0100)]
remoteproc: qcom: fix QCOM_SMD dependencies

qcom_smd_register_edge() is provided by either QCOM_SMD or RPMSG_QCOM_SMD,
and if both of them are disabled, it does nothing.

The check for the PIL drivers however only checks for QCOM_SMD, so it breaks
with QCOM_SMD=n && RPMSG_QCOM_SMD=m:

drivers/remoteproc/built-in.o: In function `smd_subdev_remove':
qcom_wcnss_iris.c:(.text+0x231c): undefined reference to `qcom_smd_unregister_edge'
drivers/remoteproc/built-in.o: In function `smd_subdev_probe':
qcom_wcnss_iris.c:(.text+0x2344): undefined reference to `qcom_smd_register_edge'
drivers/remoteproc/built-in.o: In function `smd_subdev_probe':
qcom_q6v5_pil.c:(.text+0x3538): undefined reference to `qcom_smd_register_edge'
qcom_q6v5_pil.c:(.text+0x3538): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `qcom_smd_register_edge'

This clarifies the Kconfig dependency.

Fixes: 4b48921a8f74 ("remoteproc: qcom: Use common SMD edge handler")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
4 years agof2fs: combine nat_bits and free_nid_bitmap cache
Chao Yu [Wed, 8 Mar 2017 12:07:49 +0000 (20:07 +0800)]
f2fs: combine nat_bits and free_nid_bitmap cache

Both nat_bits cache and free_nid_bitmap cache provide same functionality
as a intermediate cache between free nid cache and disk, but with
different granularity of indicating free nid range, and different
persistence policy. nat_bits cache provides better persistence ability,
and free_nid_bitmap provides better granularity.

In this patch we combine advantage of both caches, so finally policy of
the intermediate cache would be:
- init: load free nid status from nat_bits into free_nid_bitmap
- lookup: scan free_nid_bitmap before load NAT blocks
- update: update free_nid_bitmap in real-time
- persistence: udpate and persist nat_bits in checkpoint

This patch also resolves performance regression reported by lkp-robot.

commit:
  4ac912427c4214d8031d9ad6fbc3bc75e71512df ("f2fs: introduce free nid bitmap")
  d00030cf9cd0bb96fdccc41e33d3c91dcbb672ba ("f2fs: use __set{__clear}_bit_le")
  1382c0f3f9d3f936c8bc42ed1591cf7a593ef9f7 ("f2fs: combine nat_bits and free_nid_bitmap cache")

4ac912427c4214d8 d00030cf9cd0bb96fdccc41e33 1382c0f3f9d3f936c8bc42ed15
---------------- -------------------------- --------------------------
         %stddev     %change         %stddev     %change         %stddev
             \          |                \          |                \
     77863 ±  0%      +2.1%      79485 ±  1%     +50.8%     117404 ±  0%  aim7.jobs-per-min
    231.63 ±  0%      -2.0%     227.01 ±  1%     -33.6%     153.80 ±  0%  aim7.time.elapsed_time
    231.63 ±  0%      -2.0%     227.01 ±  1%     -33.6%     153.80 ±  0%  aim7.time.elapsed_time.max
    896604 ±  0%      -0.8%     889221 ±  3%     -20.2%     715260 ±  1%  aim7.time.involuntary_context_switches
      2394 ±  1%      +4.6%       2503 ±  1%      +3.7%       2481 ±  2%  aim7.time.maximum_resident_set_size
      6240 ±  0%      -1.5%       6145 ±  1%     -14.1%       5360 ±  1%  aim7.time.system_time
   1111357 ±  3%      +1.9%    1132509 ±  2%      -6.2%    1041932 ±  2%  aim7.time.voluntary_context_switches
...

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Tested-by: Xiaolong Ye <xiaolong.ye@intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
4 years agof2fs: skip scanning free nid bitmap of full NAT blocks
Chao Yu [Wed, 1 Mar 2017 09:09:07 +0000 (17:09 +0800)]
f2fs: skip scanning free nid bitmap of full NAT blocks

This patch adds to account free nids for each NAT blocks, and while
scanning all free nid bitmap, do check count and skip lookuping in
full NAT block.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
4 years agof2fs: use __set{__clear}_bit_le
Jaegeuk Kim [Tue, 7 Mar 2017 22:11:06 +0000 (14:11 -0800)]
f2fs: use __set{__clear}_bit_le

This patch uses __set{__clear}_bit_le for highter speed.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
4 years agof2fs: declare static functions
Jaegeuk Kim [Fri, 10 Mar 2017 17:39:57 +0000 (09:39 -0800)]
f2fs: declare static functions

This is to avoid build warning reported by kbuild test robot.

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
4 years agof2fs: don't overwrite node block by SSR
Jaegeuk Kim [Mon, 6 Mar 2017 19:59:56 +0000 (11:59 -0800)]
f2fs: don't overwrite node block by SSR

This patch fixes that SSR can overwrite previous warm node block consisting of
a node chain since the last checkpoint.

Fixes: 5b6c6be2d878 ("f2fs: use SSR for warm node as well")
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
4 years agoLinux 4.11-rc3 v4.11-rc3
Linus Torvalds [Mon, 20 Mar 2017 02:09:39 +0000 (19:09 -0700)]
Linux 4.11-rc3

4 years agomm/swap: don't BUG_ON() due to uninitialized swap slot cache
Linus Torvalds [Mon, 20 Mar 2017 02:00:47 +0000 (19:00 -0700)]
mm/swap: don't BUG_ON() due to uninitialized swap slot cache

This BUG_ON() triggered for me once at shutdown, and I don't see a
reason for the check.  The code correctly checks whether the swap slot
cache is usable or not, so an uninitialized swap slot cache is not
actually problematic afaik.

I've temporarily just switched the BUG_ON() to a WARN_ON_ONCE(), since
I'm not sure why that seemingly pointless check was there.  I suspect
the real fix is to just remove it entirely, but for now we'll warn about
it but not bring the machine down.

Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoMerge tag 'powerpc-4.11-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Mon, 20 Mar 2017 01:49:28 +0000 (18:49 -0700)]
Merge tag 'powerpc-4.11-5' of git://git./linux/kernel/git/powerpc/linux

Pull more powerpc fixes from Michael Ellerman:
 "A couple of minor powerpc fixes for 4.11:

   - wire up statx() syscall

   - don't print a warning on memory hotplug when HPT resizing isn't
     available

  Thanks to: David Gibson, Chandan Rajendra"

* tag 'powerpc-4.11-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/pseries: Don't give a warning when HPT resizing isn't available
  powerpc: Wire up statx() syscall

4 years agoMerge branch 'parisc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Mon, 20 Mar 2017 01:11:13 +0000 (18:11 -0700)]
Merge branch 'parisc-4.11-2' of git://git./linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:

 - Mikulas Patocka added support for R_PARISC_SECREL32 relocations in
   modules with CONFIG_MODVERSIONS.

 - Dave Anglin optimized the cache flushing for vmap ranges.

 - Arvind Yadav provided a fix for a potential NULL pointer dereference
   in the parisc perf code (and some code cleanups).

 - I wired up the new statx system call, fixed some compiler warnings
   with the access_ok() macro and fixed shutdown code to really halt a
   system at shutdown instead of crashing & rebooting.

* 'parisc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix system shutdown halt
  parisc: perf: Fix potential NULL pointer dereference
  parisc: Avoid compiler warnings with access_ok()
  parisc: Wire up statx system call
  parisc: Optimize flush_kernel_vmap_range and invalidate_kernel_vmap_range
  parisc: support R_PARISC_SECREL32 relocation in modules

4 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Mon, 20 Mar 2017 01:06:31 +0000 (18:06 -0700)]
Merge git://git./linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "The bulk of the changes are in qla2xxx target driver code to address
  various issues found during Cavium/QLogic's internal testing (stable
  CC's included), along with a few other stability and smaller
  miscellaneous improvements.

  There are also a couple of different patch sets from Mike Christie,
  which have been a result of his work to use target-core ALUA logic
  together with tcm-user backend driver.

  Finally, a patch to address some long standing issues with
  pass-through SCSI export of TYPE_TAPE + TYPE_MEDIUM_CHANGER devices,
  which will make folks using physical (or virtual) magnetic tape happy"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (28 commits)
  qla2xxx: Update driver version to 9.00.00.00-k
  qla2xxx: Fix delayed response to command for loop mode/direct connect.
  qla2xxx: Change scsi host lookup method.
  qla2xxx: Add DebugFS node to display Port Database
  qla2xxx: Use IOCB interface to submit non-critical MBX.
  qla2xxx: Add async new target notification
  qla2xxx: Export DIF stats via debugfs
  qla2xxx: Improve T10-DIF/PI handling in driver.
  qla2xxx: Allow relogin to proceed if remote login did not finish
  qla2xxx: Fix sess_lock & hardware_lock lock order problem.
  qla2xxx: Fix inadequate lock protection for ABTS.
  qla2xxx: Fix request queue corruption.
  qla2xxx: Fix memory leak for abts processing
  qla2xxx: Allow vref count to timeout on vport delete.
  tcmu: Convert cmd_time_out into backend device attribute
  tcmu: make cmd timeout configurable
  tcmu: add helper to check if dev was configured
  target: fix race during implicit transition work flushes
  target: allow userspace to set state to transitioning
  target: fix ALUA transition timeout handling
  ...

4 years agoMerge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Sun, 19 Mar 2017 22:45:02 +0000 (15:45 -0700)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull device-dax fixes from Dan Williams:
 "The device-dax driver was not being careful to handle falling back to
  smaller fault-granularity sizes.

  The driver already fails fault attempts that are smaller than the
  device's alignment, but it also needs to handle the cases where a
  larger page mapping could be established. For simplicity of the
  immediate fix the implementation just signals VM_FAULT_FALLBACK until
  fault-size == device-alignment.

  One fix is for -stable to address pmd-to-pte fallback from the
  original implementation, another fix is for the new (introduced in
  4.11-rc1) pud-to-pmd regression, and a typo fix comes along for the
  ride.

  These have received a build success notification from the kbuild
  robot"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: fix debug output typo
  device-dax: fix pud fault fallback handling
  device-dax: fix pmd/pte fault fallback handling

4 years agoqla2xxx: Update driver version to 9.00.00.00-k
Himanshu Madhani [Wed, 15 Mar 2017 16:48:56 +0000 (09:48 -0700)]
qla2xxx: Update driver version to 9.00.00.00-k

Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Fix delayed response to command for loop mode/direct connect.
Quinn Tran [Wed, 15 Mar 2017 16:48:55 +0000 (09:48 -0700)]
qla2xxx: Fix delayed response to command for loop mode/direct connect.

Current driver wait for FW to be in the ready state before
processing in-coming commands. For Arbitrated Loop or
Point-to- Point (not switch), FW Ready state can take a while.
FW will transition to ready state after all Nports have been
logged in. In the mean time, certain initiators have completed
the login and starts IO. Driver needs to start processing all
queues if FW is already started.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Change scsi host lookup method.
Quinn Tran [Wed, 15 Mar 2017 16:48:54 +0000 (09:48 -0700)]
qla2xxx: Change scsi host lookup method.

For target mode, when new scsi command arrive, driver first performs
a look up of the SCSI Host. The current look up method is based on
the ALPA portion of the NPort ID. For Cisco switch, the ALPA can
not be used as the index. Instead, the new search method is based
on the full value of the Nport_ID via btree lib.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Add DebugFS node to display Port Database
Himanshu Madhani [Wed, 15 Mar 2017 16:48:53 +0000 (09:48 -0700)]
qla2xxx: Add DebugFS node to display Port Database

Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Giridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Use IOCB interface to submit non-critical MBX.
Quinn Tran [Wed, 15 Mar 2017 16:48:52 +0000 (09:48 -0700)]
qla2xxx: Use IOCB interface to submit non-critical MBX.

The Mailbox interface is currently over subscribed. We like
to reserve the Mailbox interface for the chip managment and
link initialization. Any non essential Mailbox command will
be routed through the IOCB interface. The IOCB interface is
able to absorb more commands.

Following commands are being routed through IOCB interface

- Get ID List (007Ch)
- Get Port DB (0064h)
- Get Link Priv Stats (006Dh)

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Add async new target notification
Quinn Tran [Wed, 15 Mar 2017 16:48:51 +0000 (09:48 -0700)]
qla2xxx: Add async new target notification

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Export DIF stats via debugfs
Anil Gurumurthy [Wed, 15 Mar 2017 16:48:50 +0000 (09:48 -0700)]
qla2xxx: Export DIF stats via debugfs

Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Improve T10-DIF/PI handling in driver.
Quinn Tran [Wed, 15 Mar 2017 16:48:49 +0000 (09:48 -0700)]
qla2xxx: Improve T10-DIF/PI handling in driver.

Add routines to support T10 DIF tag.

Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Anil Gurumurthy <anil.gurumurthy@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Allow relogin to proceed if remote login did not finish
Quinn Tran [Wed, 15 Mar 2017 16:48:48 +0000 (09:48 -0700)]
qla2xxx: Allow relogin to proceed if remote login did not finish

If the remote port have started the login process, then the
PLOGI and PRLI should be back to back. Driver will allow
the remote port to complete the process. For the case where
the remote port decide to back off from sending PRLI, this
local port sets an expiration timer for the PRLI. Once the
expiration time passes, the relogin retry logic is allowed
to go through and perform login with the remote port.

Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Fix sess_lock & hardware_lock lock order problem.
Quinn Tran [Wed, 15 Mar 2017 16:48:47 +0000 (09:48 -0700)]
qla2xxx: Fix sess_lock & hardware_lock lock order problem.

The main lock that needs to be held for CMD or TMR submission
to upper layer is the sess_lock. The sess_lock is used to
serialize cmd submission and session deletion. The addition
of hardware_lock being held is not necessary. This patch removes
hardware_lock dependency from CMD/TMR submission.

Use hardware_lock only for error response in this case.

Path1
       CPU0                    CPU1
       ----                    ----
  lock(&(&ha->tgt.sess_lock)->rlock);
                               lock(&(&ha->hardware_lock)->rlock);
                               lock(&(&ha->tgt.sess_lock)->rlock);
  lock(&(&ha->hardware_lock)->rlock);

Path2/deadlock
*** DEADLOCK ***
Call Trace:
dump_stack+0x85/0xc2
print_circular_bug+0x1e3/0x250
__lock_acquire+0x1425/0x1620
lock_acquire+0xbf/0x210
_raw_spin_lock_irqsave+0x53/0x70
qlt_sess_work_fn+0x21d/0x480 [qla2xxx]
process_one_work+0x1f4/0x6e0

Cc: <stable@vger.kernel.org>
Cc: Bart Van Assche <Bart.VanAssche@sandisk.com>
Reported-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Fix inadequate lock protection for ABTS.
Quinn Tran [Wed, 15 Mar 2017 16:48:46 +0000 (09:48 -0700)]
qla2xxx: Fix inadequate lock protection for ABTS.

Normally, ABTS is sent to Target Core as Task MGMT command.
In the case of error, qla2xxx needs to send response, hardware_lock
is required to prevent request queue corruption.

Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Fix request queue corruption.
Quinn Tran [Wed, 15 Mar 2017 16:48:45 +0000 (09:48 -0700)]
qla2xxx: Fix request queue corruption.

When FW notify driver or driver detects low FW resource,
driver tries to send out Busy SCSI Status to tell Initiator
side to back off. During the send process, the lock was not held.

Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@qlogic.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Fix memory leak for abts processing
Quinn Tran [Wed, 15 Mar 2017 16:48:44 +0000 (09:48 -0700)]
qla2xxx: Fix memory leak for abts processing

Cc: <stable@vger.kernel.org>
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoqla2xxx: Allow vref count to timeout on vport delete.
Joe Carnuccio [Wed, 15 Mar 2017 16:48:43 +0000 (09:48 -0700)]
qla2xxx: Allow vref count to timeout on vport delete.

Cc: <stable@vger.kernel.org>
Signed-off-by: Joe Carnuccio <joe.carnuccio@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotcmu: Convert cmd_time_out into backend device attribute
Nicholas Bellinger [Sat, 18 Mar 2017 22:04:13 +0000 (15:04 -0700)]
tcmu: Convert cmd_time_out into backend device attribute

Instead of putting cmd_time_out under ../target/core/user_0/foo/control,
which has historically been used by parameters needed for initial
backend device configuration, go ahead and move cmd_time_out into
a backend device attribute.

In order to do this, tcmu_module_init() has been updated to create
a local struct configfs_attribute **tcmu_attrs, that is based upon
the existing passthrough_attrib_attrs along with the new cmd_time_out
attribute.  Once **tcm_attrs has been setup, go ahead and point
it at tcmu_ops->tb_dev_attrib_attrs so it's picked up by target-core.

Also following MNC's previous change, ->cmd_time_out is stored in
milliseconds but exposed via configfs in seconds.  Also, note this
patch restricts the modification of ->cmd_time_out to before +
after the TCMU device has been configured, but not while it has
active fabric exports.

Cc: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotcmu: make cmd timeout configurable
Mike Christie [Thu, 9 Mar 2017 08:42:09 +0000 (02:42 -0600)]
tcmu: make cmd timeout configurable

A single daemon could implement multiple types of devices
using multuple types of real devices that may not support
restarting from crashes and/or handling tcmu timeouts. This
makes the cmd timeout configurable, so handlers that do not
support it can turn if off for now.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotcmu: add helper to check if dev was configured
Mike Christie [Thu, 9 Mar 2017 08:42:08 +0000 (02:42 -0600)]
tcmu: add helper to check if dev was configured

This adds a helper to check if the dev was configured. It
will be used in the next patch to prevent updates to some
config settings after the device has been setup.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoMerge tag 'openrisc-for-linus' of git://github.com/openrisc/linux
Linus Torvalds [Sat, 18 Mar 2017 22:50:39 +0000 (15:50 -0700)]
Merge tag 'openrisc-for-linus' of git://github.com/openrisc/linux

Pull OpenRISC fixes from Stafford Horne:
 "OpenRISC fixes for build issues that were exposed by kbuild robots
  after 4.11 merge. All from allmodconfig builds. This includes:

   - bug in the handling of 8-byte get_user() calls

   - module build failure due to multile missing symbol exports"

* tag 'openrisc-for-linus' of git://github.com/openrisc/linux:
  openrisc: Export symbols needed by modules
  openrisc: fix issue handling 8 byte get_user calls
  openrisc: xchg: fix `computed is not used` warning

4 years agotarget: fix race during implicit transition work flushes
Mike Christie [Thu, 2 Mar 2017 10:59:50 +0000 (04:59 -0600)]
target: fix race during implicit transition work flushes

This fixes the following races:

1. core_alua_do_transition_tg_pt could have read
tg_pt_gp_alua_access_state and gone into this if chunk:

if (!explicit &&
        atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state) ==
           ALUA_ACCESS_STATE_TRANSITION) {

and then core_alua_do_transition_tg_pt_work could update the
state. core_alua_do_transition_tg_pt would then only set
tg_pt_gp_alua_pending_state and the tg_pt_gp_alua_access_state would
not get updated with the second calls state.

2. core_alua_do_transition_tg_pt could be setting
tg_pt_gp_transition_complete while the tg_pt_gp_transition_work
is already completing. core_alua_do_transition_tg_pt then waits on the
completion that will never be called.

To handle these issues, we just call flush_work which will return when
core_alua_do_transition_tg_pt_work has completed so there is no need
to do the complete/wait. And, if core_alua_do_transition_tg_pt_work
was running, instead of trying to sneak in the state change, we just
schedule up another core_alua_do_transition_tg_pt_work call.

Note that this does not handle a possible race where there are multiple
threads call core_alua_do_transition_tg_pt at the same time. I think
we need a mutex in target_tg_pt_gp_alua_access_state_store.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotarget: allow userspace to set state to transitioning
Mike Christie [Thu, 2 Mar 2017 10:59:49 +0000 (04:59 -0600)]
target: allow userspace to set state to transitioning

Userspace target_core_user handlers like tcmu-runner may want to set the
ALUA state to transitioning while it does implicit transitions. This
patch allows that state when set from configfs.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotarget: fix ALUA transition timeout handling
Mike Christie [Thu, 2 Mar 2017 10:59:48 +0000 (04:59 -0600)]
target: fix ALUA transition timeout handling

The implicit transition time tells initiators the min time
to wait before timing out a transition. We currently schedule
the transition to occur in tg_pt_gp_implicit_trans_secs
seconds so there is no room for delays. If
core_alua_do_transition_tg_pt_work->core_alua_update_tpg_primary_metadata
needs to write out info to a remote file, then the initiator can
easily time out the operation.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotarget: Use system workqueue for ALUA transitions
Mike Christie [Thu, 2 Mar 2017 05:13:26 +0000 (23:13 -0600)]
target: Use system workqueue for ALUA transitions

If tcmu-runner is processing a STPG and needs to change the kernel's
ALUA state then we cannot use the same work queue for task management
requests and ALUA transitions, because we could deadlock. The problem
occurs when a STPG times out before tcmu-runner is able to
call into target_tg_pt_gp_alua_access_state_store->
core_alua_do_port_transition -> core_alua_do_transition_tg_pt ->
queue_work. In this case, the tmr is on the work queue waiting for
the STPG to complete, but the STPG transition is now queued behind
the waiting tmr.

Note:
This bug will also be fixed by this patch:
http://www.spinics.net/lists/target-devel/msg14560.html
which switches the tmr code to use the system workqueues.

For both, I am not sure if we need a dedicated workqueue since
it is not a performance path and I do not think we need WQ_MEM_RECLAIM
to make forward progress to free up memory like the block layer does.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotarget: fail ALUA transitions for pscsi
Mike Christie [Thu, 2 Mar 2017 05:13:25 +0000 (23:13 -0600)]
target: fail ALUA transitions for pscsi

We do not setup the LU group for pscsi devices, so if you write
a state to alua_access_state that will cause a transition you will
get a NULL pointer dereference.

This patch will fail attempts to try and transition the path
for backend devices that set the TRANSPORT_FLAG_PASSTHROUGH_ALUA
flag.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotarget: allow ALUA setup for some passthrough backends
Mike Christie [Thu, 2 Mar 2017 05:13:24 +0000 (23:13 -0600)]
target: allow ALUA setup for some passthrough backends

This patch allows passthrough backends to use the core/base LIO
ALUA setup and state checks, but still handle the execution of
commands.

This will allow the target_core_user module to execute STPG and RTPG
in userspace, and not have to duplicate the ALUA state checks, path
information (needed so we can check if command is executable on
specific paths) and setup (rtslib sets/updates the configfs ALUA
interface like it does for iblock or file).

For STPG, the target_core_user userspace daemon, tcmu-runner will
still execute the STPG, and to update the core/base LIO state it
will use the existing configfs interface. For RTPG, tcmu-runner
will loop over configfs and/or cache the state.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotcmu: return on first Opt parse failure
Mike Christie [Thu, 2 Mar 2017 05:14:40 +0000 (23:14 -0600)]
tcmu: return on first Opt parse failure

We only were returing failure if the last opt to be parsed failed.
This has a return failure when we first detect a failure.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotcmu: allow hw_max_sectors greater than 128
Mike Christie [Thu, 2 Mar 2017 05:14:39 +0000 (23:14 -0600)]
tcmu: allow hw_max_sectors greater than 128

tcmu hard codes the hw_max_sectors to 128 which is a litle small.
Userspace uses the max_sectors to report the optimal IO size and
some initiators perform better with larger IOs (open-iscsi seems
to do better with 256 to 512 depending on the test).

(Fix do not display hw max sectors twice - MNC)

Signed-off-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agotarget: Drop pointless tfo->check_stop_free check
Nicholas Bellinger [Wed, 8 Mar 2017 08:09:59 +0000 (00:09 -0800)]
target: Drop pointless tfo->check_stop_free check

All in-tree fabric drivers provide a tfo->check_stop_free(),
so there is no need to do the extra check within existing
transport_cmd_check_stop_to_fabric() code.

Just to be sure, add a check in target_fabric_tf_ops_check()
to notify any out-of-tree drivers that might be missing it.

Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
4 years agoparisc: Fix system shutdown halt
Helge Deller [Sat, 18 Mar 2017 16:13:27 +0000 (17:13 +0100)]
parisc: Fix system shutdown halt

On those parisc machines which don't provide a software power off
function, the system currently kills the init process at the end of a
shutdown and unexpectedly restarts insteads of halting.
Fix it by adding a loop which will not return.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.9+
4 years agoparisc: perf: Fix potential NULL pointer dereference
Arvind Yadav [Tue, 14 Mar 2017 09:54:51 +0000 (15:24 +0530)]
parisc: perf: Fix potential NULL pointer dereference

Fix potential NULL pointer dereference and clean up
coding style errors (code indent, trailing whitespaces).

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
4 years agoMerge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 18 Mar 2017 15:33:44 +0000 (08:33 -0700)]
Merge branch 'smp-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull CPU hotplug fix from Thomas Gleixner:
 "A single fix preventing the concurrent execution of the CPU hotplug
  callback install/invocation machinery. Long standing bug caused by a
  massive brain slip of that Gleixner dude, which went unnoticed for
  almost a year"

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Serialize callback invocations proper

4 years agoMerge tag 'pm-4.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Sat, 18 Mar 2017 00:25:14 +0000 (17:25 -0700)]
Merge tag 'pm-4.11-rc3' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix a few more intel_pstate issues and one small issue in the
  cpufreq core.

  Specifics:

   - Fix breakage in the intel_pstate's debugfs interface for PID
     controller tuning (Rafael Wysocki)

   - Fix computations related to P-state limits in intel_pstate to avoid
     excessive rounding errors leading to visible inaccuracies (Srinivas
     Pandruvada, Rafael Wysocki)

   - Add a missing newline to a message printed by one function in the
     cpufreq core and clean up that function (Rafael Wysocki)"

* tag 'pm-4.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: Fix and clean up show_cpuinfo_cur_freq()
  cpufreq: intel_pstate: Avoid percentages in limits-related computations
  cpufreq: intel_pstate: Correct frequency setting in the HWP mode
  cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()

4 years agoMerge branches 'pm-cpufreq-fixes' and 'intel_pstate-fixes'
Rafael J. Wysocki [Fri, 17 Mar 2017 23:45:09 +0000 (00:45 +0100)]
Merge branches 'pm-cpufreq-fixes' and 'intel_pstate-fixes'

* pm-cpufreq-fixes:
  cpufreq: Fix and clean up show_cpuinfo_cur_freq()

* intel_pstate-fixes:
  cpufreq: intel_pstate: Avoid percentages in limits-related computations
  cpufreq: intel_pstate: Correct frequency setting in the HWP mode
  cpufreq: intel_pstate: Update pid_params.sample_rate_ns in pid_param_set()

4 years agoMerge tag 'nfs-for-4.11-2' of git://git.linux-nfs.org/projects/anna/linux-nfs
Linus Torvalds [Fri, 17 Mar 2017 21:16:22 +0000 (14:16 -0700)]
Merge tag 'nfs-for-4.11-2' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client fixes from Anna Schumaker:
 "We have a handful of stable fixes to fix kernel warnings and other
  bugs that have been around for a while. We've also found a few other
  reference counting bugs and memory leaks since the initial 4.11 pull.

  Stable Bugfixes:
   - Fix decrementing nrequests in NFS v4.2 COPY to fix kernel warnings
   - Prevent a double free in async nfs4_exchange_id()
   - Squelch a kbuild sparse complaint for xprtrdma

  Other Bugfixes:
   - Fix a typo (NFS_ATTR_FATTR_GROUP_NAME) that causes a memory leak
   - Fix a reference leak that causes kernel warnings
   - Make nfs4_cb_sv_ops static to fix a sparse warning
   - Respect a server's max size in CREATE_SESSION
   - Handle errors from nfs4_pnfs_ds_connect
   - Flexfiles layout shouldn't mark devices as unavailable"

* tag 'nfs-for-4.11-2' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  pNFS/flexfiles: never nfs4_mark_deviceid_unavailable
  pNFS: return status from nfs4_pnfs_ds_connect
  NFSv4.1 respect server's max size in CREATE_SESSION
  NFS prevent double free in async nfs4_exchange_id
  nfs: make nfs4_cb_sv_ops static
  xprtrdma: Squelch kbuild sparse complaint
  NFS: fix the fault nrequests decreasing for nfs_inode COPY
  NFSv4: fix a reference leak caused WARNING messages
  nfs4: fix a typo of NFS_ATTR_FATTR_GROUP_NAME

4 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Mar 2017 21:05:03 +0000 (14:05 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "An assorted pile of fixes along with some hardware enablement:

   - a fix for a KASAN / branch profiling related boot failure

   - some more fallout of the PUD rework

   - a fix for the Always Running Timer which is not initialized when
     the TSC frequency is known at boot time (via MSR/CPUID)

   - a resource leak fix for the RDT filesystem

   - another unwinder corner case fixup

   - removal of the warning for duplicate NMI handlers because there are
     legitimate cases where more than one handler can be registered at
     the last level

   - make a function static - found by sparse

   - a set of updates for the Intel MID platform which got delayed due
     to merge ordering constraints. It's hardware enablement for a non
     mainstream platform, so there is no risk"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mpx: Make unnecessarily global function static
  x86/intel_rdt: Put group node in rdtgroup_kn_unlock
  x86/unwind: Fix last frame check for aligned function stacks
  mm, x86: Fix native_pud_clear build error
  x86/kasan: Fix boot with KASAN=y and PROFILE_ANNOTATED_BRANCHES=y
  x86/platform/intel-mid: Add power button support for Merrifield
  x86/platform/intel-mid: Use common power off sequence
  x86/platform: Remove warning message for duplicate NMI handlers
  x86/tsc: Fix ART for TSC_KNOWN_FREQ
  x86/platform/intel-mid: Correct MSI IRQ line for watchdog device

4 years agoMerge branch 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 17 Mar 2017 21:01:40 +0000 (14:01 -0700)]
Merge branch 'x86-acpi-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 acpi fixes from Thomas Gleixner:
 "This update deals with the fallout of the recent work to make
  cpuid/node mappings persistent.

  It turned out that the boot time ACPI based mapping tripped over ACPI
  inconsistencies and caused regressions. It's partially reverted and
  the fragile part replaced by an implementation which makes the mapping
  persistent when a CPU goes online for the first time"

* 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  acpi/processor: Check for duplicate processor ids at hotplug time
  acpi/processor: Implement DEVICE operator for processor enumeration
  x86/acpi: Restore the order of CPU IDs
  Revert"x86/acpi: Enable MADT APIs to return disabled apicids"
  Revert "x86/acpi: Set persistent cpuid <-> nodeid mapping when booting"

4 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Mar 2017 20:59:52 +0000 (13:59 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "A set of perf related fixes:

   - fix a CR4.PCE propagation issue caused by usage of mm instead of
     active_mm and therefore propagated the wrong value.

   - perf core fixes, which plug a use-after-free issue and make the
     event inheritance on fork more robust.

   - a tooling fix for symbol handling"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf symbols: Fix symbols__fixup_end heuristic for corner cases
  x86/perf: Clarify why x86_pmu_event_mapped() isn't racy
  x86/perf: Fix CR4.PCE propagation to use active_mm instead of mm
  perf/core: Better explain the inherit magic
  perf/core: Simplify perf_event_free_task()
  perf/core: Fix event inheritance on fork()
  perf/core: Fix use-after-free in perf_release()

4 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Mar 2017 20:19:07 +0000 (13:19 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Thomas Gleixner:
 "From the scheduler departement:

   - a bunch of sched deadline related fixes which deal with various
     buglets and corner cases.

   - two fixes for the loadavg spikes which are caused by the delayed
     NOHZ accounting"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/deadline: Use deadline instead of period when calculating overflow
  sched/deadline: Throttle a constrained deadline task activated after the deadline
  sched/deadline: Make sure the replenishment timer fires in the next period
  sched/loadavg: Use {READ,WRITE}_ONCE() for sample window
  sched/loadavg: Avoid loadavg spikes caused by delayed NO_HZ accounting
  sched/deadline: Add missing update_rq_clock() in dl_task_timer()

4 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Mar 2017 20:16:24 +0000 (13:16 -0700)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Thomas Gleixner:
 "Three fixes related to locking:

   - fix a SIGKILL issue for RWSEM_GENERIC_SPINLOCK which has been fixed
     for the XCHGADD variant already

   - plug a potential use after free in the futex code

   - prevent leaking a held spinlock in an futex error handling code
     path"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rwsem: Fix down_write_killable() for CONFIG_RWSEM_GENERIC_SPINLOCK=y
  futex: Add missing error handling to FUTEX_REQUEUE_PI
  futex: Fix potential use-after-free in FUTEX_REQUEUE_PI

4 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Mar 2017 20:13:35 +0000 (13:13 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fix from Thomas Gleixner:
 "Just a simple revert of a new sched_clock implementation which turned
  out to be buggy"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Revert "clocksource/drivers/tcb_clksrc: Use 32 bit tcb as sched_clock"

4 years agopNFS/flexfiles: never nfs4_mark_deviceid_unavailable
Weston Andros Adamson [Thu, 9 Mar 2017 17:56:49 +0000 (12:56 -0500)]
pNFS/flexfiles: never nfs4_mark_deviceid_unavailable

The flexfiles layout should never mark a device unavailable.

Move nfs4_mark_deviceid_unavailable out of nfs4_pnfs_ds_connect and call
directly from files layout where it's still needed.

The flexfiles driver still handles marked devices in error paths, but will
now print a rate limited warning.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
4 years agopNFS: return status from nfs4_pnfs_ds_connect
Weston Andros Adamson [Thu, 9 Mar 2017 17:56:48 +0000 (12:56 -0500)]
pNFS: return status from nfs4_pnfs_ds_connect

The nfs4_pnfs_ds_connect path can call rpc_create which can fail or it
can wait on another context to reach the same failure.

This checks that the rpc_create succeeded and returns the error to the
caller.

When an error is returned, both the files and flexfiles layouts will return
NULL from _prepare_ds(). The flexfiles layout will also return the layout
with the error NFS4ERR_NXIO.

Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
4 years agoNFSv4.1 respect server's max size in CREATE_SESSION
Olga Kornievskaia [Wed, 8 Mar 2017 19:39:15 +0000 (14:39 -0500)]
NFSv4.1 respect server's max size in CREATE_SESSION

Currently client doesn't respect max sizes server returns in CREATE_SESSION.
nfs4_session_set_rwsize() gets called and server->rsize, server->wsize are 0
so they never get set to the sizes returned by the server.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
4 years agoNFS prevent double free in async nfs4_exchange_id
Olga Kornievskaia [Mon, 13 Mar 2017 14:36:19 +0000 (10:36 -0400)]
NFS prevent double free in async nfs4_exchange_id

Since rpc_task is async, the release function should be called which
will free the impl_id, scope, and owner.

Trond pointed at 2 more problems:
-- use of client pointer after free in the nfs4_exchangeid_release() function
-- cl_count mismatch if rpc_run_task() isn't run

Fixes: 8d89bd70bc9 ("NFS setup async exchange_id")
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Cc: stable@vger.kernel.org # 4.9
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
4 years agonfs: make nfs4_cb_sv_ops static
Jason Yan [Fri, 10 Mar 2017 02:48:13 +0000 (10:48 +0800)]
nfs: make nfs4_cb_sv_ops static

Fixes the following sparse warning:

fs/nfs/callback.c:235:21: warning: symbol 'nfs4_cb_sv_ops' was not
declared. Should it be static?

Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
4 years agoxprtrdma: Squelch kbuild sparse complaint
Chuck Lever [Sat, 11 Mar 2017 20:52:47 +0000 (15:52 -0500)]
xprtrdma: Squelch kbuild sparse complaint

New complaint from kbuild for 4.9.y:

net/sunrpc/xprtrdma/verbs.c:489:19: sparse: incompatible types in
    comparison expression (different type sizes)

verbs.c:
489 max_sge = min(ia->ri_device->attrs.max_sge, RPCRDMA_MAX_SEND_SGES);

I can't reproduce this running sparse here. Likewise, "make W=1
net/sunrpc/xprtrdma/verbs.o" never indicated any issue.

A little poking suggests that because the range of its values is
small, gcc can make the actual width of RPCRDMA_MAX_SEND_SGES
smaller than the width of an unsigned integer.

Fixes: 16f906d66cd7 ("xprtrdma: Reduce required number of send SGEs")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: stable@kernel.org
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
4 years agoNFS: fix the fault nrequests decreasing for nfs_inode COPY
Kinglong Mee [Thu, 9 Mar 2017 03:36:36 +0000 (11:36 +0800)]
NFS: fix the fault nrequests decreasing for nfs_inode COPY

The nfs_commit_file for NFSv4.2's COPY operation goes through
the commit path for normal WRITE, but without increase nrequests,
so, the nrequests decreased in nfs_commit_release_pages is fault.
After that, the nrequests will be wrong.

[ 5670.299881] ------------[ cut here ]------------
[ 5670.300295] WARNING: CPU: 0 PID: 27656 at fs/nfs/inode.c:127 nfs_clear_inode+0x66/0x90 [nfs]
[ 5670.300558] Modules linked in: nfsv4(E) nfs(E) fscache(E) tun bridge stp llc fuse ip_set nfnetlink vmw_vsock_vmci_transport vsock snd_seq_midi snd_seq_midi_event ppdev f2fs coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_ens1371 intel_rapl_perf gameport snd_ac97_codec vmw_balloon ac97_bus snd_seq snd_pcm joydev snd_rawmidi snd_timer snd_seq_device snd soundcore nfit parport_pc parport acpi_cpufreq tpm_tis tpm_tis_core tpm i2c_piix4 vmw_vmci shpchp nfsd auth_rpcgss nfs_acl lockd grace sunrpc xfs libcrc32c vmwgfx drm_kms_helper ttm drm e1000 crc32c_intel mptspi scsi_transport_spi serio_raw mptscsih mptbase ata_generic pata_acpi fjes [last unloaded: fscache]
[ 5670.302925] CPU: 0 PID: 27656 Comm: umount.nfs4 Tainted: G        W   E   4.11.0-rc1+ #519
[ 5670.303292] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 5670.304094] Call Trace:
[ 5670.304510]  dump_stack+0x63/0x86
[ 5670.304917]  __warn+0xcb/0xf0
[ 5670.305276]  warn_slowpath_null+0x1d/0x20
[ 5670.305661]  nfs_clear_inode+0x66/0x90 [nfs]
[ 5670.306093]  nfs4_evict_inode+0x61/0x70 [nfsv4]
[ 5670.306480]  evict+0xbb/0x1c0
[ 5670.306888]  dispose_list+0x4d/0x70
[ 5670.307233]  evict_inodes+0x178/0x1a0
[ 5670.307579]  generic_shutdown_super+0x44/0xf0
[ 5670.307985]  nfs_kill_super+0x21/0x40 [nfs]
[ 5670.308325]  deactivate_locked_super+0x43/0x70
[ 5670.308698]  deactivate_super+0x5a/0x60
[ 5670.309036]  cleanup_mnt+0x3f/0x90
[ 5670.309407]  __cleanup_mnt+0x12/0x20
[ 5670.309837]  task_work_run+0x80/0xa0
[ 5670.310162]  exit_to_usermode_loop+0x89/0x90
[ 5670.310497]  syscall_return_slowpath+0xaa/0xb0
[ 5670.310875]  entry_SYSCALL_64_fastpath+0xa7/0xa9
[ 5670.311197] RIP: 0033:0x7f1bb3617fe7
[ 5670.311545] RSP: 002b:00007ffecbabb828 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
[ 5670.311906] RAX: 0000000000000000 RBX: 0000000001dca1f0 RCX: 00007f1bb3617fe7
[ 5670.312239] RDX: 000000000000000c RSI: 0000000000000001 RDI: 0000000001dc83c0
[ 5670.312653] RBP: 0000000001dc83c0 R08: 0000000000000001 R09: 0000000000000000
[ 5670.312998] R10: 0000000000000755 R11: 0000000000000206 R12: 00007ffecbabc66a
[ 5670.313335] R13: 0000000001dc83a0 R14: 0000000000000000 R15: 0000000000000000
[ 5670.313758] ---[ end trace bf4bfe7764e4eb40 ]---

Cc: linux-kernel@vger.kernel.org
Fixes: 67911c8f18 ("NFS: Add nfs_commit_file()")
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Cc: stable@vger.kernel.org # 4.7+
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
4 years agoMerge tag 'afs-20170316' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells...
Linus Torvalds [Fri, 17 Mar 2017 19:16:44 +0000 (12:16 -0700)]
Merge tag 'afs-20170316' of git://git./linux/kernel/git/dhowells/linux-fs

Pull AFS fixes from David Howells:
 "Fixes to the AFS filesystem in the kernel.

  They fix a variety of bugs. These include some issues fixed for
  consistency with other AFS implementations:

   - handle AFS mode bits better

   - use the client mtime rather than the server mtime in the protocol

   - handle the server returning more or less data than was requested in
     a FetchData call

   - distinguish mountpoints from symlinks based on the mode bits rather
     than preemptively reading every symlink to find out what it
     actually represents

  One other notable change for the user is that files are now flushed on
  close analogously with other network filesystems"

* tag 'afs-20170316' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (28 commits)
  afs: Don't wait for page writeback with the page lock held
  afs: ->writepage() shouldn't call clear_page_dirty_for_io()
  afs: Fix abort on signal while waiting for call completion
  afs: Fix an off-by-one error in afs_send_pages()
  afs: Fix afs_kill_pages()
  afs: Fix page leak in afs_write_begin()
  afs: Don't set PG_error on local EINTR or ENOMEM when filling a page
  afs: Populate and use client modification time
  afs: Better abort and net error handling
  afs: Invalid op ID should abort with RXGEN_OPCODE
  afs: Fix the maths in afs_fs_store_data()
  afs: Use a bvec rather than a kvec in afs_send_pages()
  afs: Make struct afs_read::remain 64-bit
  afs: Fix AFS read bug
  afs: Prevent callback expiry timer overflow
  afs: Migrate vlocation fields to 64-bit
  afs: security: Replace rcu_assign_pointer() with RCU_INIT_POINTER()
  afs: inode: Replace rcu_assign_pointer() with RCU_INIT_POINTER()
  afs: Distinguish mountpoints from symlinks by file mode alone
  afs: Flush outstanding writes when an fd is closed
  ...

4 years agoMerge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Linus Torvalds [Fri, 17 Mar 2017 19:14:49 +0000 (12:14 -0700)]
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM fix from Russell King:
 "Just one change to add the statx syscall this time around"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: wire up statx syscall

4 years agoMerge tag 'for-linus-4.11b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 17 Mar 2017 18:25:46 +0000 (11:25 -0700)]
Merge tag 'for-linus-4.11b-rc3-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fix from Juergen Gross:
 "A minor fix for using the appropriate refcount_t instead of atomic_t"

* tag 'for-linus-4.11b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  drivers, xen: convert grant_map.users from atomic_t to refcount_t

4 years agoMerge tag 'drm-fixes-for-v4.11-rc3' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 17 Mar 2017 18:19:52 +0000 (11:19 -0700)]
Merge tag 'drm-fixes-for-v4.11-rc3' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Bunch of fixes across the drivers, in a St Patrick's day pull request
  (please turn terminal colors to green on black or black on green for
  full effect).

  On the arm side, tilcdc, omap and malidp got fixes, while amd has some
  powermanagement fixes, and intel has a set of fixes across the driver.

  Nothing seems to bad or scary at this point"

* tag 'drm-fixes-for-v4.11-rc3' of git://people.freedesktop.org/~airlied/linux: (27 commits)
  drm/amd/amdgpu:  Fix debugfs reg read/write address width
  drm/amdgpu/si: add dpm quirk for Oland
  drm/radeon/si: add dpm quirk for Oland
  drm: amd: remove broken include path
  drm/amd/powerplay: fix copy error in smu7_clockpoweragting.c
  drm/tilcdc: Set framebuffer DMA address to HW only if CRTC is enabled
  drm/tilcdc: Fix hardcoded fail-return value in tilcdc_crtc_create()
  drm/i915: Fix forcewake active domain tracking
  drm/i915: Nuke skl_update_plane debug message from the pipe update critical section
  drm/i915: use correct node for handling cache domain eviction
  uapi: fix drm/omap_drm.h userspace compilation errors
  drm/omap: fix dmabuf mmap for dma_alloc'ed buffers
  drm/amdgpu: fix parser init error path to avoid crash in parser fini
  drm/amd/amdgpu: Disable GFX_PG on Carrizo until compute issues solved
  drm: mali-dp: Fix smart layer not going to composition
  drm: mali-dp: Remove mclk rate management
  drm/i915: Drain the freed state from the tail of the next commit
  drm/i915: Nuke debug messages from the pipe update critical section
  drm/i915: Use pagecache write to prepopulate shmemfs from pwrite-ioctl
  drm/i915: Store a permanent error in obj->mm.pages
  ...

4 years agoMerge tag 'perf-urgent-for-mingo-4.11-20170317' of git://git.kernel.org/pub/scm/linux...
Ingo Molnar [Fri, 17 Mar 2017 14:13:28 +0000 (15:13 +0100)]
Merge tag 'perf-urgent-for-mingo-4.11-20170317' of git://git./linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fix from Arnaldo Carvalho de Melo:

- Fix symbols__fixup_end heuristic for corner cases, such as JITted eBPF
  programs, that are loaded at page aligned addresses, just after the
  kernel proper (Daniel Borkmann)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
4 years agoperf symbols: Fix symbols__fixup_end heuristic for corner cases
Daniel Borkmann [Wed, 15 Mar 2017 21:53:37 +0000 (22:53 +0100)]
perf symbols: Fix symbols__fixup_end heuristic for corner cases

The current symbols__fixup_end() heuristic for the last entry in the rb
tree is suboptimal as it leads to not being able to recognize the symbol
in the call graph in a couple of corner cases, for example:

 i) If the symbol has a start address (f.e. exposed via kallsyms)
    that is at a page boundary, then the roundup(curr->start, 4096)
    for the last entry will result in curr->start == curr->end with
    a symbol length of zero.

ii) If the symbol has a start address that is shortly before a page
    boundary, then also here, curr->end - curr->start will just be
    very few bytes, where it's unrealistic that we could perform a
    match against.

Instead, change the heuristic to roundup(curr->start, 4096) + 4096, so
that we can catch such corner cases and have a better chance to find
that specific symbol. It's still just best effort as the real end of the
symbol is unknown to us (and could even be at a larger offset than the
current range), but better than the current situation.

Alexei reported that he recently run into case i) with a JITed eBPF
program (these are all page aligned) as the last symbol which wasn't
properly shown in the call graph (while other eBPF program symbols in
the rb tree were displayed correctly). Since this is a generic issue,
lets try to improve the heuristic a bit.

Reported-and-Tested-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Fixes: 2e538c4a1847 ("perf tools: Improve kernel/modules symbol lookup")
Link: http://lkml.kernel.org/r/bb5c80d27743be6f12afc68405f1956a330e1bc9.1489614365.git.daniel@iogearbox.net
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
4 years agogpio:mcp23s08 Fixed missing interrupts
Robert Middleton [Wed, 15 Mar 2017 20:56:47 +0000 (16:56 -0400)]
gpio:mcp23s08 Fixed missing interrupts

When an interrupt occurs on an MCP23S08 chip, the INTF register will only
contain one bit as causing the interrupt.  If more than two pins change at
the same time on the chip, this causes one of the pins to not be reported.
This patch fixes the logic for checking if a pin has changed, so that
multiple pins will always cause more than one change.

Cc: stable@vger.kernel.org
Signed-off-by: Robert Middleton <robert.middleton@rm5248.com>
Tested-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
4 years agox86/perf: Clarify why x86_pmu_event_mapped() isn't racy
Andy Lutomirski [Thu, 16 Mar 2017 19:59:40 +0000 (12:59 -0700)]
x86/perf: Clarify why x86_pmu_event_mapped() isn't racy

Naively, it looks racy, but ->mmap_sem saves it.  Add a comment and a
lockdep assertion.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bpetkov@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/03a1e629063899168dfc4707f3bb6e581e21f5c6.1489694270.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
4 years agox86/perf: Fix CR4.PCE propagation to use active_mm instead of mm
Andy Lutomirski [Thu, 16 Mar 2017 19:59:39 +0000 (12:59 -0700)]
x86/perf: Fix CR4.PCE propagation to use active_mm instead of mm

If one thread mmaps a perf event while another thread in the same mm
is in some context where active_mm != mm (which can happen in the
scheduler, for example), refresh_pce() would write the wrong value
to CR4.PCE.  This broke some PAPI tests.

Reported-and-tested-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bpetkov@suse.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Fixes: 7911d3f7af14 ("perf/x86: Only allow rdpmc if a perf_event is mapped")
Link: http://lkml.kernel.org/r/0c5b38a76ea50e405f9abe07a13dfaef87c173a1.1489694270.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
4 years agopowerpc/pseries: Don't give a warning when HPT resizing isn't available
Michael Ellerman [Fri, 17 Mar 2017 05:02:35 +0000 (16:02 +1100)]
powerpc/pseries: Don't give a warning when HPT resizing isn't available

As of commit 438cc81a41e8 ("powerpc/pseries: Automatically resize HPT
for memory hot add/remove"), when running on the pseries platform, we
always attempt to use the PAPR extension to resize the hashed page
table (HPT) when we add or remove memory.

This is fine, but when the extension is not available we'll give a
harmless, but scary warning. Instead check if the firmware supports HPT
resizing before populating the mmu_hash_ops.resize_hpt pointer.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
4 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Fri, 17 Mar 2017 01:23:02 +0000 (18:23 -0700)]
Merge branch 'akpm' (patches from Andrew)

Merge fixes from Andrew Morton:
 "6 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  drivers core: remove assert_held_device_hotplug()
  mm: add private lock to serialize memory hotplug operations
  mm: don't warn when vmalloc() fails due to a fatal signal
  mm, x86: fix native_pud_clear build error
  kasan: add a prototype of task_struct to avoid warning
  z3fold: fix spinlock unlocking in page reclaim

4 years agodrivers core: remove assert_held_device_hotplug()
Heiko Carstens [Thu, 16 Mar 2017 23:40:33 +0000 (16:40 -0700)]
drivers core: remove assert_held_device_hotplug()

The last caller of assert_held_device_hotplug() is gone, so remove it again.

Link: http://lkml.kernel.org/r/20170314125226.16779-3-heiko.carstens@de.ibm.com
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomm: add private lock to serialize memory hotplug operations
Heiko Carstens [Thu, 16 Mar 2017 23:40:30 +0000 (16:40 -0700)]
mm: add private lock to serialize memory hotplug operations

Commit bfc8c90139eb ("mem-hotplug: implement get/put_online_mems")
introduced new functions get/put_online_mems() and mem_hotplug_begin/end()
in order to allow similar semantics for memory hotplug like for cpu
hotplug.

The corresponding functions for cpu hotplug are get/put_online_cpus()
and cpu_hotplug_begin/done() for cpu hotplug.

The commit however missed to introduce functions that would serialize
memory hotplug operations like they are done for cpu hotplug with
cpu_maps_update_begin/done().

This basically leaves mem_hotplug.active_writer unprotected and allows
concurrent writers to modify it, which may lead to problems as outlined
by commit f931ab479dd2 ("mm: fix devm_memremap_pages crash, use
mem_hotplug_{begin, done}").

That commit was extended again with commit b5d24fda9c3d ("mm,
devm_memremap_pages: hold device_hotplug lock over mem_hotplug_{begin,
done}") which serializes memory hotplug operations for some call sites
by using the device_hotplug lock.

In addition with commit 3fc21924100b ("mm: validate device_hotplug is held
for memory hotplug") a sanity check was added to mem_hotplug_begin() to
verify that the device_hotplug lock is held.

This in turn triggers the following warning on s390:

WARNING: CPU: 6 PID: 1 at drivers/base/core.c:643 assert_held_device_hotplug+0x4a/0x58
 Call Trace:
  assert_held_device_hotplug+0x40/0x58)
  mem_hotplug_begin+0x34/0xc8
  add_memory_resource+0x7e/0x1f8
  add_memory+0xda/0x130
  add_memory_merged+0x15c/0x178
  sclp_detect_standby_memory+0x2ae/0x2f8
  do_one_initcall+0xa2/0x150
  kernel_init_freeable+0x228/0x2d8
  kernel_init+0x2a/0x140
  kernel_thread_starter+0x6/0xc

One possible fix would be to add more lock_device_hotplug() and
unlock_device_hotplug() calls around each call site of
mem_hotplug_begin/end().  But that would give the device_hotplug lock
additional semantics it better should not have (serialize memory hotplug
operations).

Instead add a new memory_add_remove_lock which has the similar semantics
like cpu_add_remove_lock for cpu hotplug.

To keep things hopefully a bit easier the lock will be locked and unlocked
within the mem_hotplug_begin/end() functions.

Link: http://lkml.kernel.org/r/20170314125226.16779-2-heiko.carstens@de.ibm.com
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reported-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomm: don't warn when vmalloc() fails due to a fatal signal
Dmitry Vyukov [Thu, 16 Mar 2017 23:40:27 +0000 (16:40 -0700)]
mm: don't warn when vmalloc() fails due to a fatal signal

When vmalloc() fails it prints a very lengthy message with all the
details about memory consumption assuming that it happened due to OOM.

However, vmalloc() can also fail due to fatal signal pending.  In such
case the message is quite confusing because it suggests that it is OOM
but the numbers suggest otherwise.  The messages can also pollute
console considerably.

Don't warn when vmalloc() fails due to fatal signal pending.

Link: http://lkml.kernel.org/r/20170313114425.72724-1-dvyukov@google.com
Signed-off-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agomm, x86: fix native_pud_clear build error
Arnd Bergmann [Thu, 16 Mar 2017 23:40:24 +0000 (16:40 -0700)]
mm, x86: fix native_pud_clear build error

We still get a build error in random configurations, after this has been
modified a few times:

  In file included from include/linux/mm.h:68:0,
                   from include/linux/suspend.h:8,
                   from arch/x86/kernel/asm-offsets.c:12:
  arch/x86/include/asm/pgtable.h:66:26: error: redefinition of 'native_pud_clear'
   #define pud_clear(pud)   native_pud_clear(pud)

My interpretation is that the build error comes from a typo in
__PAGETABLE_PUD_FOLDED, so fix that typo now, and remove the incorrect
#ifdef around the native_pud_clear definition.

Fixes: 3e761a42e19c ("mm, x86: fix HIGHMEM64 && PARAVIRT build config for native_pud_clear()")
Fixes: a00cc7d9dd93 ("mm, x86: add support for PUD-sized transparent hugepages")
Link: http://lkml.kernel.org/r/20170314121330.182155-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Ackedy-by: Dave Jiang <dave.jiang@intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Borislav Petkov <bp@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agokasan: add a prototype of task_struct to avoid warning
Masami Hiramatsu [Thu, 16 Mar 2017 23:40:21 +0000 (16:40 -0700)]
kasan: add a prototype of task_struct to avoid warning

Add a prototype of task_struct to fix below warning on arm64.

  In file included from arch/arm64/kernel/probes/kprobes.c:19:0:
  include/linux/kasan.h:81:132: error: 'struct task_struct' declared inside parameter list will not be visible outside of this definition or declaration [-Werror]
   static inline void kasan_unpoison_task_stack(struct task_struct *task) {}

As same as other types (kmem_cache, page, and vm_struct) this adds a
prototype of task_struct data structure on top of kasan.h.

[arnd] A related warning was fixed before, but now appears in a
different line in the same file in v4.11-rc2.  The patch from Masami
Hiramatsu still seems appropriate, so let's take his version.

Fixes: 71af2ed5eeea ("kasan, sched/headers: Remove <linux/sched.h> from <linux/kasan.h>")
Link: https://patchwork.kernel.org/patch/9569839/
Link: http://lkml.kernel.org/r/20170313141517.3397802-1-arnd@arndb.de
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Alexander Potapenko <glider@google.com>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoz3fold: fix spinlock unlocking in page reclaim
Vitaly Wool [Thu, 16 Mar 2017 23:40:19 +0000 (16:40 -0700)]
z3fold: fix spinlock unlocking in page reclaim

Commmit 5a27aa822029 ("z3fold: add kref refcounting") introduced a bug
in z3fold_reclaim_page() with function exit that may leave pool->lock
spinlock held.  Here comes the trivial fix.

Fixes: 5a27aa822029 ("z3fold: add kref refcounting")
Link: http://lkml.kernel.org/r/20170311222239.7b83d8e7ef1914e05497649f@gmail.com
Reported-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Vitaly Wool <vitalywool@gmail.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
4 years agoMerge tag 'xfs-4.11-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Thu, 16 Mar 2017 19:30:43 +0000 (12:30 -0700)]
Merge tag 'xfs-4.11-fixes-2' of git://git./fs/xfs/xfs-linux

Pull xfs fix from Darrick Wong:
 "Here's a single fix for -rc3 to improve input validation on inline
  directory data to prevent buffer overruns due to corrupt metadata"

* tag 'xfs-4.11-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: verify inline directory data forks