Commit Graph

493629 Commits

Author SHA1 Message Date
Eric W. Biederman c297abfdf1 mnt: Fix a memory stomp in umount
While reviewing the code of umount_tree I realized that when we append
to a preexisting unmounted list we do not change pprev of the former
first item in the list.

Which means later in namespace_unlock hlist_del_init(&mnt->mnt_hash) on
the former first item of the list will stomp unmounted.first leaving
it set to some random mount point which we are likely to free soon.

This isn't likely to hit, but if it does I don't know how anyone could
track it down.

[ This happened because we don't have all the same operations for
  hlist's as we do for normal doubly-linked lists. In particular,
  list_splice() is easy on our standard doubly-linked lists, while
  hlist_splice() doesn't exist and needs both start/end entries of the
  hlist.  And commit 38129a13e6 incorrectly open-coded that missing
  hlist_splice().

  We should think about making these kinds of "mindless" conversions
  easier to get right by adding the missing hlist helpers   - Linus ]

Fixes: 38129a13e6 switch mnt_hash to hlist
Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-18 11:22:02 -08:00
Linus Torvalds 44e8967d59 Ceph: remove left-over reject file
Neither Sage nor I noticed that Zheng Yan had mistakenly committed
fs/ceph/super.h.rej as part of commit 31c542a199 ("ceph: add inline
data to pagecache").

Remove it.

Requested-by: Yan, Zheng <ukernel@gmail.com>
Cc: Sage Weil <sweil@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-17 18:47:01 -08:00
Linus Torvalds 57666509b7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull ceph updates from Sage Weil:
 "The big item here is support for inline data for CephFS and for
  message signatures from Zheng.  There are also several bug fixes,
  including interrupted flock request handling, 0-length xattrs, mksnap,
  cached readdir results, and a message version compat field.  Finally
  there are several cleanups from Ilya, Dan, and Markus.

  Note that there is another series coming soon that fixes some bugs in
  the RBD 'lingering' requests, but it isn't quite ready yet"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (27 commits)
  ceph: fix setting empty extended attribute
  ceph: fix mksnap crash
  ceph: do_sync is never initialized
  libceph: fixup includes in pagelist.h
  ceph: support inline data feature
  ceph: flush inline version
  ceph: convert inline data to normal data before data write
  ceph: sync read inline data
  ceph: fetch inline data when getting Fcr cap refs
  ceph: use getattr request to fetch inline data
  ceph: add inline data to pagecache
  ceph: parse inline data in MClientReply and MClientCaps
  libceph: specify position of extent operation
  libceph: add CREATE osd operation support
  libceph: add SETXATTR/CMPXATTR osd operations support
  rbd: don't treat CEPH_OSD_OP_DELETE as extent op
  ceph: remove unused stringification macros
  libceph: require cephx message signature by default
  ceph: introduce global empty snap context
  ceph: message versioning fixes
  ...
2014-12-17 16:03:12 -08:00
Linus Torvalds 87c31b39ab Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull user namespace related fixes from Eric Biederman:
 "As these are bug fixes almost all of thes changes are marked for
  backporting to stable.

  The first change (implicitly adding MNT_NODEV on remount) addresses a
  regression that was created when security issues with unprivileged
  remount were closed.  I go on to update the remount test to make it
  easy to detect if this issue reoccurs.

  Then there are a handful of mount and umount related fixes.

  Then half of the changes deal with the a recently discovered design
  bug in the permission checks of gid_map.  Unix since the beginning has
  allowed setting group permissions on files to less than the user and
  other permissions (aka ---rwx---rwx).  As the unix permission checks
  stop as soon as a group matches, and setgroups allows setting groups
  that can not later be dropped, results in a situtation where it is
  possible to legitimately use a group to assign fewer privileges to a
  process.  Which means dropping a group can increase a processes
  privileges.

  The fix I have adopted is that gid_map is now no longer writable
  without privilege unless the new file /proc/self/setgroups has been
  set to permanently disable setgroups.

  The bulk of user namespace using applications even the applications
  using applications using user namespaces without privilege remain
  unaffected by this change.  Unfortunately this ix breaks a couple user
  space applications, that were relying on the problematic behavior (one
  of which was tools/selftests/mount/unprivileged-remount-test.c).

  To hopefully prevent needing a regression fix on top of my security
  fix I rounded folks who work with the container implementations mostly
  like to be affected and encouraged them to test the changes.

    > So far nothing broke on my libvirt-lxc test bed. :-)
    > Tested with openSUSE 13.2 and libvirt 1.2.9.
    > Tested-by: Richard Weinberger <richard@nod.at>

    > Tested on Fedora20 with libvirt 1.2.11, works fine.
    > Tested-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>

    > Ok, thanks - yes, unprivileged lxc is working fine with your kernels.
    > Just to be sure I was testing the right thing I also tested using
    > my unprivileged nsexec testcases, and they failed on setgroup/setgid
    > as now expected, and succeeded there without your patches.
    > Tested-by: Serge Hallyn <serge.hallyn@ubuntu.com>

    > I tested this with Sandstorm.  It breaks as is and it works if I add
    > the setgroups thing.
    > Tested-by: Andy Lutomirski <luto@amacapital.net> # breaks things as designed :("

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  userns: Unbreak the unprivileged remount tests
  userns; Correct the comment in map_write
  userns: Allow setting gid_maps without privilege when setgroups is disabled
  userns: Add a knob to disable setgroups on a per user namespace basis
  userns: Rename id_map_mutex to userns_state_mutex
  userns: Only allow the creator of the userns unprivileged mappings
  userns: Check euid no fsuid when establishing an unprivileged uid mapping
  userns: Don't allow unprivileged creation of gid mappings
  userns: Don't allow setgroups until a gid mapping has been setablished
  userns: Document what the invariant required for safe unprivileged mappings.
  groups: Consolidate the setgroups permission checks
  mnt: Clear mnt_expire during pivot_root
  mnt: Carefully set CL_UNPRIVILEGED in clone_mnt
  mnt: Move the clear of MNT_LOCKED from copy_tree to it's callers.
  umount: Do not allow unmounting rootfs.
  umount: Disallow unprivileged mount force
  mnt: Update unprivileged remount test
  mnt: Implicitly add MNT_NODEV on remount when it was implicitly added by mount
2014-12-17 12:31:40 -08:00
Linus Torvalds f045bbb9fa mmu_gather: fix over-eager tlb_flush_mmu_free() calling
Dave Hansen reports that commit fb7332a9fe ("mmu_gather: move minimal
range calculations into generic code") caused a performance problem:

  "tlb_finish_mmu() goes up about 9x in the profiles (~0.4%->3.6%) and
   tlb_flush_mmu_free() takes about 3.1% of CPU time with the patch
   applied, but does not show up at all on the commit before"

and the reason is that Will moved the test for whether we need to flush
from tlb_flush_mmu() into tlb_flush_mmu_tlbonly().  But that meant that
tlb_flush_mmu_free() basically lost that check.

Move it back into tlb_flush_mmu() where it belongs, so that it covers
both tlb_flush_mmu_tlbonly() _and_ tlb_flush_mmu_free().

Reported-and-tested-by: Dave Hansen <dave@sr71.net>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-17 11:59:04 -08:00
Linus Torvalds cf3c0a1579 x86: mm: fix VM_FAULT_RETRY handling
My commit 26178ec11e ("x86: mm: consolidate VM_FAULT_RETRY handling")
had a really stupid typo: the FAULT_FLAG_USER bit is in the 'flags'
variable, not the 'fault' variable. Duh,

The one silver lining in this is that Dave finding this at least
confirms that trinity actually triggers this special path easily, in a
way normal use does not.

Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-12-17 11:52:37 -08:00
Linus Torvalds cc669743a3 VFIO updates for v3.19-rc1
- s390 support (Frank Blaschka)
  - Enable iommu-type1 for ARM SMMU (Will Deacon)
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Merge tag 'vfio-v3.19-rc1' of git://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:
 - s390 support (Frank Blaschka)
 - Enable iommu-type1 for ARM SMMU (Will Deacon)

* tag 'vfio-v3.19-rc1' of git://github.com/awilliam/linux-vfio:
  drivers/vfio: allow type-1 IOMMU instantiation on top of an ARM SMMU
  vfio: make vfio run on s390
2014-12-17 10:44:22 -08:00
Linus Torvalds 9f3e151299 A balloon enhancement, and a minor race-on-module-unload theoretical
bug which doesn't merit cc: stable.
 
 All the exciting stuff went via MST this cycle.
 
 Thanks,
 Rusty.
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Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull virtio updates from Rusty Russell:
 "A balloon enhancement, and a minor race-on-module-unload theoretical
  bug which doesn't merit cc: stable.

  All the exciting stuff went via MST this cycle"

* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  virtio_balloon: free some memory from balloon on OOM
  virtio_balloon: return the amount of freed memory from leak_balloon()
  virtio_blk: fix race at module removal
  virtio: Fix comment typo 'CONFIG_S_FAILED'
2014-12-17 10:37:56 -08:00
Linus Torvalds 2efda9042d Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management update from Zhang Rui:
 "Summary:

   - of-thermal extension to allow drivers to register and use its
     functionality in a better way, without exploiting thermal core.
     From Lukasz Majewski.

   - Fix a bug in intel_soc_dts_thermal driver which calls a sleep
     function in interrupt handler.  From Maurice Petallo.

   - add a thermal UAPI header file for exporting the thermal generic
     netlink information to user-space.  From Florian Fainelli.

   - First round of refactoring in Exynos driver.  Bartlomiej and Lukasz
     are attempting to make it lean and easier to understand.

   - New thermal driver for Rockchip (rk3288), with support for DT
     thermal.  From Caesar Wang.

   - New thermal driver for Nvidia, Tegra124 SOCTHERM driver, with
     support for DT thermal.  From Mikko Perttunen.

   - New cooling device, based on common clock framework.  From Eduardo
     Valentin.

   - a couple of small fixes in thermal core framework.  From Srinivas
     Pandruvada, Javi Merino, Luis Henriques.

   - Dropping Armada A375-Z1 SoC thermal support as the chip is not in
     the market, armada folks decided to drop its support.

   - a couple of small fixes and cleanups in int340x thermal driver"

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (58 commits)
  thermal: provide an UAPI header file
  Thermal/int340x: Clear the error value of the last acpi_bus_get_device() call
  thermal/powerclamp: add id for braswell cpu
  thermal: Intel SoC DTS: Don't do thermal zone update inside spin_lock
  Thermal: fix platform_no_drv_owner.cocci warnings
  Thermal/int340x: avoid unnecessary pointer casting
  thermal: int3403: Delete a check before thermal_zone_device_unregister()
  thermal/int3400: export uuids
  thermal: of: Extend current of-thermal.c code to allow setting emulated temp
  thermal: of: Extend of-thermal to export table of trip points
  thermal: of: Rename struct __thermal_trip to struct thermal_trip
  thermal: of: Extend of-thermal.c to provide check if trip point is valid
  thermal: of: Extend of-thermal.c to provide number of trip points
  thermal: Fix error path in thermal_init()
  thermal: lock the thermal zone when switching governors
  thermal: core: ignore invalid trip temperature
  thermal: armada: Remove support for A375-Z1 SoC
  thermal: rockchip: add driver for thermal
  dt-bindings: document Rockchip thermal
  thermal: exynos: remove exynos_tmu_data.h include
  ...
2014-12-17 10:16:27 -08:00
Linus Torvalds 0b4954c469 pwm: Changes for v3.19-rc1
There are two new drivers, one for the BCM2835 (Raspberry Pi) and one
 used in conjunction with the LCD controller on various Atmel SoCs. The
 Samsung PWM driver can now be built for 64-bit ARM (Exynos7).
 
 A couple of fixes have been applied to the FTM PWM driver and system
 sleep support was added.
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Merge tag 'pwm/for-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "There are two new drivers, one for the BCM2835 (Raspberry Pi) and one
  used in conjunction with the LCD controller on various Atmel SoCs.
  The Samsung PWM driver can now be built for 64-bit ARM (Exynos7).

  A couple of fixes have been applied to the FTM PWM driver and system
  sleep support was added"

* tag 'pwm/for-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: atmel-hlcdc: add at91sam9x5 and sama5d3 errata handling
  pwm: ftm: Add Power Management support for FTM PWM
  pwm: ftm: Add regmap rbtree type cache support
  pwm: ftm: Correctly track usage count
  pwm: samsung: Allow Samsung PWM driver to be enabled on Exynos7
  pwm: add DT bindings documentation for atmel-hlcdc-pwm driver
  pwm: add support for atmel-hlcdc-pwm device
  pwm: Add BCM2835 PWM driver
2014-12-17 10:10:51 -08:00
Linus Torvalds d797da41b2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input subsystem updates from Dmitry Torokhov:
 "Two new drivers for Elan hardware (for I2C touchpad and touchscreen
  found in several Chromebooks and other devices), a driver for Goodix
  touch panel, and small fixes to Cypress I2C trackpad and other input
  drivers.

  Also we switched to use __maybe_unused instead of gating suspend/
  resume code with #ifdef guards to get better compile coverage"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (27 commits)
  Input: gpio_keys - fix warning regarding uninitialized 'button' variable
  Input: add support for Elan eKTH I2C touchscreens
  Input: gpio_keys - fix warning regarding uninitialized  'irq' variable
  Input: cyapa - use 'error' for error codes
  Input: cyapa - fix resuming the device
  Input: gpio_keys - add device tree support for interrupt only keys
  Input: amikbd - allocate temporary keymap buffer on the stack
  Input: amikbd - fix build if !CONFIG_HW_CONSOLE
  Input: lm8323 - missing error check in lm8323_set_disable()
  Input: initialize device counter variables with -1
  Input: initialize input_no to -1 to avoid subtraction
  Input: i8042 - do not try to load on Intel NUC D54250WYK
  Input: atkbd - correct MSC_SCAN events for force_release keys
  Input: cyapa - switch to using managed resources
  Input: lifebook - use "static inline" instead of "inline" in lifebook.h
  Input: touchscreen - use __maybe_unused instead of ifdef around suspend/resume
  Input: mouse - use __maybe_unused instead of ifdef around suspend/resume
  Input: misc - use __maybe_unused instead of ifdef around suspend/resume
  Input: cap11xx - support for irq-active-high option
  Input: cap11xx - add support for various cap11xx devices
  ...
2014-12-17 10:06:02 -08:00
Linus Torvalds d6666be6f0 MTD updates for 3.19:
* Add device tree support for DoC3
 
  * SPI NOR:
 
     Refactoring, for better layering between spi-nor.c and its driver users
     (e.g., m25p80.c)
 
     New flash device support
 
     Support 6-byte ID strings
 
  * NAND
 
     New NAND driver for Allwinner SoC's (sunxi)
 
     GPMI NAND: add support for raw (no ECC) access, for testing purposes
 
     Add ATO manufacturer ID
 
     A few odd driver fixes
 
  * MTD tests:
 
     Allow testers to compensate for OOB bitflips in oobtest
 
     Fix a torturetest regression
 
  * nandsim: Support longer ID byte strings
 
 And more.
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Merge tag 'for-linus-20141215' of git://git.infradead.org/linux-mtd

Pull MTD updates from Brian Norris:
 "Summary:
   - Add device tree support for DoC3

   - SPI NOR:
        Refactoring, for better layering between spi-nor.c and its
        driver users (e.g., m25p80.c)

        New flash device support

        Support 6-byte ID strings

   - NAND:
        New NAND driver for Allwinner SoC's (sunxi)

        GPMI NAND: add support for raw (no ECC) access, for testing
        purposes

        Add ATO manufacturer ID

        A few odd driver fixes

   - MTD tests:
        Allow testers to compensate for OOB bitflips in oobtest

        Fix a torturetest regression

   - nandsim: Support longer ID byte strings

  And more"

* tag 'for-linus-20141215' of git://git.infradead.org/linux-mtd: (63 commits)
  mtd: tests: abort torturetest on erase errors
  mtd: physmap_of: fix potential NULL dereference
  mtd: spi-nor: allow NULL as chip name and try to auto detect it
  mtd: nand: gpmi: add raw oob access functions
  mtd: nand: gpmi: add proper raw access support
  mtd: nand: gpmi: add gpmi_copy_bits function
  mtd: spi-nor: factor out write_enable() for erase commands
  mtd: spi-nor: add support for s25fl128s
  mtd: spi-nor: remove the jedec_id/ext_id
  mtd: spi-nor: add id/id_len for flash_info{}
  mtd: nand: correct the comment of function nand_block_isreserved()
  jffs2: Drop bogus if in comment
  mtd: atmel_nand: replace memcpy32_toio/memcpy32_fromio with memcpy
  mtd: cafe_nand: drop duplicate .write_page implementation
  mtd: m25p80: Add support for serial flash Spansion S25FL132K
  MTD: m25p80: fix inconsistency in m25p_ids compared to spi_nor_ids
  mtd: spi-nor: improve wait-till-ready timeout loop
  mtd: delete unnecessary checks before two function calls
  mtd: nand: omap: Fix NAND enumeration on 3430 LDP
  mtd: nand: add ATO manufacturer info
  ...
2014-12-17 09:59:26 -08:00
Linus Torvalds 0ea90b9e79 Microblaze patches for 3.19-rc1
- Fix mmap for cache coherent memory
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Merge tag 'microblaze-3.19-rc1' of git://git.monstr.eu/linux-2.6-microblaze

Pull Microblaze fix from Michal Simek:
 "Fix mmap for cache coherent memory"

* tag 'microblaze-3.19-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: Fix mmap for cache coherent memory
2014-12-17 09:54:05 -08:00
Linus Torvalds 5f5425ef55 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem fixes from James Morris.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  KEYS: remove a bogus NULL check
  ima: Fix build failure on powerpc when TCG_IBMVTPM dependencies are not met
  KEYS: Fix stale key registration at error path
2014-12-17 09:52:49 -08:00
Linus Torvalds c103b21c20 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse update from Miklos Szeredi:
 "The first part makes sure we don't hold up umount with pending async
  requests.  In addition to being a cleanup, this is a small behavioral
  change (for the better) and unlikely to break anything.

  The second part prepares for a cleanup of the fuse device I/O code by
  adding a helper for simple request submission, with some savings in
  line numbers already realized"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: use file_inode() in fuse_file_fallocate()
  fuse: introduce fuse_simple_request() helper
  fuse: reduce max out args
  fuse: hold inode instead of path after release
  fuse: flush requests on umount
  fuse: don't wake up reserved req in fuse_conn_kill()
2014-12-17 09:41:32 -08:00
Yan, Zheng 0aeff37aba ceph: fix setting empty extended attribute
make sure 'value' is not null. otherwise __ceph_setxattr will remove
the extended attribute.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-12-17 20:18:49 +03:00
Yan, Zheng 275dd19ea4 ceph: fix mksnap crash
mksnap reply only contain 'target', does not contain 'dentry'. So
it's wrong to use req->r_reply_info.head->is_dentry to detect traceless
reply.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-12-17 20:09:53 +03:00
Dan Carpenter 021b77bee2 ceph: do_sync is never initialized
Probably this code was syncing a lot more often then intended because
the do_sync variable wasn't set to zero.

Cc: stable@vger.kernel.org # v3.11+
Fixes: c62988ec09 ('ceph: avoid meaningless calling ceph_caps_revoking if sync_mode == WB_SYNC_ALL.')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:53 +03:00
Ilya Dryomov 84a1d2d1ec libceph: fixup includes in pagelist.h
pagelist.h needs to include linux/types.h and asm/byteorder.h and not
rely on other headers pulling yet another set of headers.

Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:53 +03:00
Yan, Zheng 65a22662bf ceph: support inline data feature
Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:53 +03:00
Yan, Zheng e20d258d73 ceph: flush inline version
After converting inline data to normal data, client need to flush
the new i_inline_version (CEPH_INLINE_NONE) to MDS. This commit makes
cap messages (sent to MDS) contain inline_version and inline_data.
Client always converts inline data to normal data before data write,
so the inline data length part is always zero.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:53 +03:00
Yan, Zheng 28127bdd2f ceph: convert inline data to normal data before data write
Before any data write, convert inline data to normal data and set
i_inline_version to CEPH_INLINE_NONE. The OSD request that saves
inline data to object contains 3 operations (CMPXATTR, WRITE and
SETXATTR). It compares a xattr named 'inline_version' to prevent
old data overwrites newer data.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:52 +03:00
Yan, Zheng 83701246ae ceph: sync read inline data
we can't use getattr to fetch inline data while holding Fr cap,
because it can cause deadlock. If we need to sync read inline data,
drop cap refs first, then use getattr to fetch inline data.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:52 +03:00
Yan, Zheng 3738daa68a ceph: fetch inline data when getting Fcr cap refs
we can't use getattr to fetch inline data after getting Fcr caps,
because it can cause deadlock. The solution is try bringing inline
data to page cache when not holding any cap, and hope the inline
data page is still there after getting the Fcr caps. If the page
is still there, pin it in page cache for later IO.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:52 +03:00
Yan, Zheng 01deead041 ceph: use getattr request to fetch inline data
Add a new parameter 'locked_page' to ceph_do_getattr(). If inline data
in getattr reply will be copied to the page.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:52 +03:00
Yan, Zheng 31c542a199 ceph: add inline data to pagecache
Request reply and cap message can contain inline data. add inline data
to the page cache if there is Fc cap.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:52 +03:00
Yan, Zheng fb01d1f8b0 ceph: parse inline data in MClientReply and MClientCaps
Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:52 +03:00
Yan, Zheng 715e4cd405 libceph: specify position of extent operation
allow specifying position of extent operation in multi-operations
osd request. This is required for cephfs to convert inline data to
normal data (compare xattr, then write object).

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:52 +03:00
Yan, Zheng 864e9197f1 libceph: add CREATE osd operation support
Add CEPH_OSD_OP_CREATE support.  Also change libceph to not treat
CEPH_OSD_OP_DELETE as an extent op and add an assert to that end.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:51 +03:00
Yan, Zheng d74b50bed0 libceph: add SETXATTR/CMPXATTR osd operations support
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:51 +03:00
Ilya Dryomov 7e868b6eff rbd: don't treat CEPH_OSD_OP_DELETE as extent op
CEPH_OSD_OP_DELETE is not an extent op, stop treating it as such.  This
sneaked in with discard patches - it's one of the three osd ops (the
other two are CEPH_OSD_OP_TRUNCATE and CEPH_OSD_OP_ZERO) that discard
is implemented with.

Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
Reviewed-by: Alex Elder <elder@linaro.org>
2014-12-17 20:09:51 +03:00
Ilya Dryomov ca3995ad13 ceph: remove unused stringification macros
These were used to report git versions a long time ago.

Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:51 +03:00
Yan, Zheng a3fc98005c libceph: require cephx message signature by default
Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:51 +03:00
Yan, Zheng 97c85a828f ceph: introduce global empty snap context
Current snaphost code does not properly handle moving inode from one
empty snap realm to another empty snap realm. After changing inode's
snap realm, some dirty pages' snap context can be not equal to inode's
i_head_snap. This can trigger BUG() in ceph_put_wrbuffer_cap_refs()

The fix is introduce a global empty snap context for all empty snap
realm. This avoids triggering the BUG() for filesystem with no snapshot.

Fixes: http://tracker.ceph.com/issues/9928

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:51 +03:00
John Spray 7cfa0313d0 ceph: message versioning fixes
There were two places we were assigning version in host byte order
instead of network byte order.

Also in MSG_CLIENT_SESSION we weren't setting compat_version in the
header to reflect continued compatability with older MDSs.

Fixes: http://tracker.ceph.com/issues/9945

Signed-off-by: John Spray <john.spray@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-12-17 20:09:51 +03:00
John Spray d4e1a4e0db libceph: update ceph_msg_header structure
2 bytes of what was reserved space is now used by userspace for the
compat_version field.

Signed-off-by: John Spray <john.spray@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
2014-12-17 20:09:50 +03:00
Yan, Zheng 33d0733796 libceph: message signature support
Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:50 +03:00
Yan, Zheng ae385eaf24 libceph: store session key in cephx authorizer
Session key is required when calculating message signature. Save the session
key in authorizer, this avoid lookup ticket handler for each message

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:50 +03:00
SF Markus Elfring e96a650a81 ceph, rbd: delete unnecessary checks before two function calls
The functions ceph_put_snap_context() and iput() test whether their
argument is NULL and then return immediately. Thus the test around the
call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
[idryomov@redhat.com: squashed rbd.c hunk, changelog]
Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:50 +03:00
Yan, Zheng 70db4f3629 ceph: introduce a new inode flag indicating if cached dentries are ordered
After creating/deleting/renaming file, offsets of sibling dentries may
change. So we can not use cached dentries to satisfy readdir. But we can
still use the cached dentries to conclude -ENOENT for lookup.

This patch introduces a new inode flag indicating if child dentries are
ordered. The flag is set at the same time marking a directory complete.
After creating/deleting/renaming file, we clear the flag on directory
inode. This prevents ceph_readdir() from using cached dentries to satisfy
readdir syscall.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:50 +03:00
Ilya Dryomov 4965fc38c4 libceph: nuke ceph_kvfree()
Use kvfree() from linux/mm.h instead, which is identical.  Also fix the
ceph_buffer comment: we will allocate with kmalloc() up to 32k - the
value of PAGE_ALLOC_COSTLY_ORDER, but that really is just an
implementation detail so don't mention it at all.

Signed-off-by: Ilya Dryomov <idryomov@redhat.com>
2014-12-17 20:09:50 +03:00
Yan, Zheng 9280be24dc ceph: fix file lock interruption
When a lock operation is interrupted, current code sends a unlock request to
MDS to undo the lock operation. This method does not work as expected because
the unlock request can drop locks that have already been acquired.

The fix is use the newly introduced CEPH_LOCK_FCNTL_INTR/CEPH_LOCK_FLOCK_INTR
requests to interrupt blocked file lock request. These requests do not drop
locks that have alread been acquired, they only interrupt blocked file lock
request.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
2014-12-17 20:09:49 +03:00
Lars-Peter Clausen 3a8e326517 microblaze: Fix mmap for cache coherent memory
When running in non-cache coherent configuration the memory that was
allocated with dma_alloc_coherent() has a custom mapping and so there is no
1-to-1 relationship between the kernel virtual address and the PFN. This
means that virt_to_pfn() will not work correctly for those addresses and the
default mmap implementation in the form of dma_common_mmap() will map some
random, but not the requested, memory area.

Fix this by providing a custom mmap implementation that looks up the PFN
from the page table rather than using virt_to_pfn.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2014-12-17 12:59:59 +01:00
Linus Torvalds 603ba7e41b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs pile #2 from Al Viro:
 "Next pile (and there'll be one or two more).

  The large piece in this one is getting rid of /proc/*/ns/* weirdness;
  among other things, it allows to (finally) make nameidata completely
  opaque outside of fs/namei.c, making for easier further cleanups in
  there"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  coda_venus_readdir(): use file_inode()
  fs/namei.c: fold link_path_walk() call into path_init()
  path_init(): don't bother with LOOKUP_PARENT in argument
  fs/namei.c: new helper (path_cleanup())
  path_init(): store the "base" pointer to file in nameidata itself
  make default ->i_fop have ->open() fail with ENXIO
  make nameidata completely opaque outside of fs/namei.c
  kill proc_ns completely
  take the targets of /proc/*/ns/* symlinks to separate fs
  bury struct proc_ns in fs/proc
  copy address of proc_ns_ops into ns_common
  new helpers: ns_alloc_inum/ns_free_inum
  make proc_ns_operations work with struct ns_common * instead of void *
  switch the rest of proc_ns_operations to working with &...->ns
  netns: switch ->get()/->put()/->install()/->inum() to working with &net->ns
  make mntns ->get()/->put()/->install()/->inum() work with &mnt_ns->ns
  common object embedded into various struct ....ns
2014-12-16 15:53:03 -08:00
Linus Torvalds 31f48fc8f2 Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull isofs and reiserfs fixes from Jan Kara:
 "A reiserfs and an isofs fix.  They arrived after I sent you my first
  pull request and I don't want to delay them unnecessarily till rc2"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  isofs: Fix infinite looping over CE entries
  reiserfs: destroy allocated commit workqueue
2014-12-16 15:46:01 -08:00
Linus Torvalds 0b233b7c79 Merge branch 'for-3.19' of git://linux-nfs.org/~bfields/linux
Pull nfsd updates from Bruce Fields:
 "A comparatively quieter cycle for nfsd this time, but still with two
  larger changes:

   - RPC server scalability improvements from Jeff Layton (using RCU
     instead of a spinlock to find idle threads).

   - server-side NFSv4.2 ALLOCATE/DEALLOCATE support from Anna
     Schumaker, enabling fallocate on new clients"

* 'for-3.19' of git://linux-nfs.org/~bfields/linux: (32 commits)
  nfsd4: fix xdr4 count of server in fs_location4
  nfsd4: fix xdr4 inclusion of escaped char
  sunrpc/cache: convert to use string_escape_str()
  sunrpc: only call test_bit once in svc_xprt_received
  fs: nfsd: Fix signedness bug in compare_blob
  sunrpc: add some tracepoints around enqueue and dequeue of svc_xprt
  sunrpc: convert to lockless lookup of queued server threads
  sunrpc: fix potential races in pool_stats collection
  sunrpc: add a rcu_head to svc_rqst and use kfree_rcu to free it
  sunrpc: require svc_create callers to pass in meaningful shutdown routine
  sunrpc: have svc_wake_up only deal with pool 0
  sunrpc: convert sp_task_pending flag to use atomic bitops
  sunrpc: move rq_cachetype field to better optimize space
  sunrpc: move rq_splice_ok flag into rq_flags
  sunrpc: move rq_dropme flag into rq_flags
  sunrpc: move rq_usedeferral flag to rq_flags
  sunrpc: move rq_local field to rq_flags
  sunrpc: add a generic rq_flags field to svc_rqst and move rq_secure to it
  nfsd: minor off by one checks in __write_versions()
  sunrpc: release svc_pool_map reference when serv allocation fails
  ...
2014-12-16 15:25:31 -08:00
Linus Torvalds 6f51ee709e ARM: SoC/iommu configuration for 3.19
The iomm-config branch contains work from Will Deacon, quoting his description:
 
     This series adds automatic IOMMU and DMA-mapping configuration for
     OF-based DMA masters described using the generic IOMMU devicetree
     bindings. Although there is plenty of future work around splitting up
     iommu_ops, adding default IOMMU domains and sorting out automatic IOMMU
     group creation for the platform_bus, this is already useful enough for
     people to port over their IOMMU drivers and start using the new probing
     infrastructure (indeed, Marek has patches queued for the Exynos IOMMU).
 
 The branch touches core ARM and IOMMU driver files, and the respective
 maintainers (Russell King and Joerg Roedel) agreed to have the contents
 merged through the arm-soc tree. The final version was ready just before
 the merge window, so we ended up delaying it a bit longer than the rest,
 but we don't expect to see regressions because this is just additional
 infrastructure that will get used in drivers starting in 3.20 but is
 unused so far.
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Merge tag 'iommu-config-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC/iommu configuration update from Arnd Bergmann:
 "The iomm-config branch contains work from Will Deacon, quoting his
  description:

    This series adds automatic IOMMU and DMA-mapping configuration for
    OF-based DMA masters described using the generic IOMMU devicetree
    bindings. Although there is plenty of future work around splitting up
    iommu_ops, adding default IOMMU domains and sorting out automatic IOMMU
    group creation for the platform_bus, this is already useful enough for
    people to port over their IOMMU drivers and start using the new probing
    infrastructure (indeed, Marek has patches queued for the Exynos IOMMU).

  The branch touches core ARM and IOMMU driver files, and the respective
  maintainers (Russell King and Joerg Roedel) agreed to have the
  contents merged through the arm-soc tree.

  The final version was ready just before the merge window, so we ended
  up delaying it a bit longer than the rest, but we don't expect to see
  regressions because this is just additional infrastructure that will
  get used in drivers starting in 3.20 but is unused so far"

* tag 'iommu-config-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  iommu: store DT-probed IOMMU data privately
  arm: dma-mapping: plumb our iommu mapping ops into arch_setup_dma_ops
  arm: call iommu_init before of_platform_populate
  dma-mapping: detect and configure IOMMU in of_dma_configure
  iommu: fix initialization without 'add_device' callback
  iommu: provide helper function to configure an IOMMU for an of master
  iommu: add new iommu_ops callback for adding an OF device
  dma-mapping: replace set_arch_dma_coherent_ops with arch_setup_dma_ops
  iommu: provide early initialisation hook for IOMMU drivers
2014-12-16 14:53:01 -08:00
Linus Torvalds 205dc205ed ARM: SoC DT updates for 3.19, part 2
This is a follow-up to the early ARM SoC DT changes, with additional
 content that has external dependencies:
 
 * The Tegra IOMMU DT support depends on changes from the iommu
   tree, plus the contents of the arm-soc drivers branch
 * The MVEBU PHY support depends on changes from the phy tree
 * The AT91 DT support depends on changes from the RTC and
   DMA-slave trees
 
 All of these changes just enable additional devices for
 existing platforms.
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Merge tag 'dt2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC DT updates part 2 from Arnd Bergmann:
 "This is a follow-up to the early ARM SoC DT changes, with additional
  content that has external dependencies:

   - The Tegra IOMMU DT support depends on changes from the iommu tree,
     plus the contents of the arm-soc drivers branch
   - The MVEBU PHY support depends on changes from the phy tree
   - The AT91 DT support depends on changes from the RTC and DMA-slave
     trees

  All of these changes just enable additional devices for existing
  platforms"

* tag 'dt2-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: tegra: Enable IOMMU for display controllers on Tegra124
  ARM: tegra: Enable IOMMU for display controllers on Tegra114
  ARM: tegra: Enable IOMMU for display controllers on Tegra30
  ARM: tegra: Add memory controller support for Tegra124
  ARM: tegra: Add memory controller support for Tegra114
  ARM: tegra: Add memory controller support for Tegra30
  ARM: tegra: Add APB_MISC_GP as a MIPI pad control bank
  ARM: mvebu: add PHY support to the dts for the USB controllers on Armada 375
  ARM: mvebu: add Device Tree description of USB cluster controller on Armada 375
  ARM: at91/dt: at91sam9g45: add ISI node
  ARM: at91/dt: enable the RTT block on the at91sam9m10g45ek board
  ARM: at91/dt: enable the RTT block on the sam9g20ek board
  ARM: at91/dt: add GPBR nodes
  ARM: at91/dt: add RTT nodes to at91 dtsis
  ARM: at91/dt: at91sam9rl: add rtc
  ARM: at91: fix GPLv2 wording
  ARM: at91/dt: sama5d4: add DMA support
  ARM: at91/dt: sama5d4: use macro instead of numeric value
2014-12-16 14:26:26 -08:00
Linus Torvalds 94bbdb63d7 ARM: SoC fixes for 3.19-rc1
Here are the first arm-soc bug fixes. Most of these are OMAP related
 fixes for regressions or minor bugs. Aside from that, there are a
 few defconfig changes for various platforms.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Here are the first arm-soc bug fixes.  Most of these are OMAP related
  fixes for regressions or minor bugs.  Aside from that, there are a few
  defconfig changes for various platforms"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  iommu/exynos: Fix arm64 allmodconfig build
  ARM: defconfigs: use CONFIG_CPUFREQ_DT
  ARM: omap2plus_defconfig: Enable AHCI_PLATFORM driver
  ARM: dts: am437x-sk-evm.dts: fix LCD timings
  ARM: dts: dra7-evm: Update SMPS7 (VDD_CORE) max voltage to match DM
  ARM: dts: dra7-evm: Fix typo in SMPS6 (VDD_GPU) max voltage
  ARM: OMAP2+: AM43x: Add ID for ES1.2
  ARM: dts: am437x-sk: fix lcd enable pin mux data
  ARM: dts: Fix gpmc regression for omap 2430sdp smc91x
  Revert "ARM: shmobile: multiplatform: add Audo DMAC peri peri support on defconfig"
  ARM: dts: dra7: fix DSS PLL clock mux registers
  ARM: dts: DRA7: wdt: Fix compatible property for watchdog node
  ARM: OMAP2+: clock: remove unused function prototype
2014-12-16 14:17:36 -08:00
Linus Torvalds 36c0a48fe5 arm64 fixes:
Fix some fallout introduced during the merge window:
  - Build failure when PM_SLEEP is disabled but CPU_IDLE is enabled
  - Compiler warning from page table dumper w/ 48-bit VAs
  - Erroneous page table truncation in reported dump
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Given that my availability next week is likely to be poor, here are
  three arm64 fixes to resolve some issues introduced by features merged
  last week.  I was going to wait until -rc1, but it doesn't make much
  sense to sit on fixes.

  Fix some fallout introduced during the merge window:

   - Build failure when PM_SLEEP is disabled but CPU_IDLE is enabled
   - Compiler warning from page table dumper w/ 48-bit VAs
   - Erroneous page table truncation in reported dump"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: dump: don't skip final region
  arm64: mm: dump: fix shift warning
  arm64: psci: Fix build breakage without PM_SLEEP
2014-12-16 14:12:33 -08:00