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2016-06-28drivers: ata: pata_arasan_cf: use the same name for the same lockIago Abal1-1/+1
Note that `&acdev->host->lock' and `qc->ap->lock' denote the same lock, and it's particularly confusing to spin_lock on the former but spin_unlock on the latter. Signed-off-by: Iago Abal <mail@iagoabal.eu> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-06-17ata: fix "ering" sysfs time printingArnd Bergmann1-4/+5
The sysfs file for the libata error handling has multiple issues in the way it prints time stamps: * it prints a 9-digit nanosecond value using a %06lu format string, which drops some leading zeroes * it converts a 64-bit jiffes value to a timespec using jiffies_to_timespec(), which takes a 'long' argument, so the result is wrong after a jiffies overflow (49 days). * we try to avoid using timespec because that generally overflows in 2038, although this particular usage is ok. This replaces the jiffies_to_timespec call with an open-coded implementation that gets it right. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-06-16ARM: dts: nsp: Add sata device tree entryYendapally Reddy Dhananjaya Reddy2-0/+54
Add sata support to the Northstar Plus SoC device tree. Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-06-16phy: Add SATA3 PHY support for Broadcom NSP SoCYendapally Reddy Dhananjaya Reddy1-0/+81
This patch adds support for Broadcom NSP SATA3 PHY in existing Broadcom SATA PHY driver. Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-06-16ata: ahci_brcm: Add support for Broadcom NSP SoCYendapally Reddy Dhananjaya Reddy2-11/+37
Add SATA3 support for Broadcom NSP SoC Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-06-16ata: ahci_brcmstb: rename to support across Broadcom SoC'sYendapally Reddy Dhananjaya Reddy3-4/+4
Rename the existing Broadcom STB ahci driver to common Broadcom SATA3 driver to share this across Broadcom SoCs. Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-06-16dt-bindings: phy: Add documentation for NSP SATA PHYYendapally Reddy Dhananjaya Reddy1-1/+3
Add documentation for SATA PHY available in Broadcom's NSP SoC. Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-06-16dt-bindings: ata: add support for Broadcom NSP SoC ahciYendapally Reddy Dhananjaya Reddy1-0/+1
Add support for Broadcom NSP SoC ahci Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-06-16dt-bindings: ata: rename brcm, sata-brcmstb.txt to brcm, sata-brcm.txtYendapally Reddy Dhananjaya Reddy1-4/+4
Renames the dt bindings document of Broadcom STB ahci driver to common Broadcom ahci driver bindings document Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yendapally.reddy@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-05-27ata: Use IS_ENABLED() instead of checking for built-in or moduleJavier Martinez Canillas2-2/+2
The IS_ENABLED() macro checks if a Kconfig symbol has been enabled either built-in or as a module, use that macro instead of open coding the same. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-05-27MAINTAINERS: Add file patterns for ata device tree bindingsGeert Uytterhoeven1-0/+1
Submitters of device tree binding documentation may forget to CC the subsystem maintainer if this is missing. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Tejun Heo <tj@kernel.org> Cc: linux-ide@vger.kernel.org Signed-off-by: Tejun Heo <tj@kernel.org>
2016-05-27pata_atiixp: fix trivial indentation misalignment on if statementColin Ian King1-2/+2
Remove extraneous space on if statement and on the following line, trivial fix, no functional change Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2016-05-26drivers/pinctrl/intel/pinctrl-baytrail.c: fix build with gcc-4.4Andrew Morton1-3/+7
gcc-4.4 and thereabouts has issues with initializers of anonymous unions, and it generates the following warnings: drivers/pinctrl/intel/pinctrl-baytrail.c:413: error: unknown field 'simple_funcs' specified in initializer drivers/pinctrl/intel/pinctrl-baytrail.c:413: warning: missing braces around initializer drivers/pinctrl/intel/pinctrl-baytrail.c:413: warning: (near initialization for 'byt_score_groups[0].<anonymous>') drivers/pinctrl/intel/pinctrl-baytrail.c:415: error: unknown field 'simple_funcs' specified in initializer drivers/pinctrl/intel/pinctrl-baytrail.c:417: error: unknown field 'simple_funcs' specified in initializer ... Work around this. Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26update "mm/zsmalloc: don't fail if can't create debugfs info"Dan Streetman1-19/+16
Some updates to commit d34f615720d1 ("mm/zsmalloc: don't fail if can't create debugfs info"): - add pr_warn to all stat failure cases - do not prevent module loading on stat failure Link: http://lkml.kernel.org/r/1463671123-5479-1-git-send-email-ddstreet@ieee.org Signed-off-by: Dan Streetman <ddstreet@ieee.org> Reviewed-by: Ganesh Mahendran <opensource.ganesh@gmail.com> Acked-by: Minchan Kim <minchan@kernel.org> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Dan Streetman <dan.streetman@canonical.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26dma-debug: avoid spinlock recursion when disabling dma-debugVille Syrjälä1-1/+1
With netconsole (at least) the pr_err("... disablingn") call can recurse back into the dma-debug code, where it'll try to grab free_entries_lock again. Avoid the problem by doing the printk after dropping the lock. Link: http://lkml.kernel.org/r/1463678421-18683-1-git-send-email-ville.syrjala@linux.intel.com Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26mm: oom_reaper: remove some bloatMichal Hocko3-1/+7
mmput_async is currently used only from the oom_reaper which is defined only for CONFIG_MMU. We can save work_struct in mm_struct for !CONFIG_MMU. [akpm@linux-foundation.org: fix typo, per Minchan] Link: http://lkml.kernel.org/r/20160520061658.GB19172@dhcp22.suse.cz Reported-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Michal Hocko <mhocko@suse.com> Acked-by: Minchan Kim <minchan@kernel.org> Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26memcg: fix mem_cgroup_out_of_memory() return value.Tetsuo Handa1-0/+2
mem_cgroup_out_of_memory() is returning "true" if it finds a TIF_MEMDIE task after an eligible task was found, "false" if it found a TIF_MEMDIE task before an eligible task is found. This difference confuses memory_max_write() which checks the return value of mem_cgroup_out_of_memory(). Since memory_max_write() wants to continue looping, mem_cgroup_out_of_memory() should return "true" in this case. This patch sets a dummy pointer in order to return "true". Link: http://lkml.kernel.org/r/1463753327-5170-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jp Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Vladimir Davydov <vdavydov@virtuozzo.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26ocfs2: fix improper handling of return errnoEric Ren1-6/+1
Previously, if a bad inode was found in ocfs2_iget(), -ESTALE was returned back to the caller anyway. Since commit d2b9d71a2da7 ("ocfs2: check/fix inode block for online file check") can handle with return value from ocfs2_read_locked_inode() now, we know the exact errno returned for us. Link: http://lkml.kernel.org/r/1463970656-18413-1-git-send-email-zren@suse.com Signed-off-by: Eric Ren <zren@suse.com> Reviewed-by: Joseph Qi <joseph.qi@huawei.com> Cc: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Cc: Junxiao Bi <junxiao.bi@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26mm: slub: remove unused virt_to_obj()Andrey Ryabinin1-16/+0
It's unused since commit 7ed2f9e66385 ("mm, kasan: SLAB support") Link: http://lkml.kernel.org/r/1464020961-2242-1-git-send-email-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: David Rientjes <rientjes@google.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Christoph Lameter <cl@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26mm: kasan: remove unused 'reserved' field from struct kasan_alloc_metaAndrey Ryabinin1-1/+0
Commit cd11016e5f52 ("mm, kasan: stackdepot implementation. Enable stackdepot for SLAB") added 'reserved' field, but never used it. Link: http://lkml.kernel.org/r/1464021054-2307-1-git-send-email-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Alexander Potapenko <glider@google.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>
2016-05-26mm: make CONFIG_DEFERRED_STRUCT_PAGE_INIT depends on !FLATMEM explicitlyYang Shi1-0/+1
Per the suggestion from Michal Hocko [1], DEFERRED_STRUCT_PAGE_INIT requires some ordering wrt other initialization operations, e.g. page_ext_init has to happen after the whole memmap is initialized properly. For SPARSEMEM this requires to wait for page_alloc_init_late. Other memory models (e.g. flatmem) might have different initialization layouts (page_ext_init_flatmem). Currently DEFERRED_STRUCT_PAGE_INIT depends on MEMORY_HOTPLUG which in turn depends on SPARSEMEM || X86_64_ACPI_NUMA depends on ARCH_ENABLE_MEMORY_HOTPLUG and X86_64_ACPI_NUMA depends on NUMA which in turn disable FLATMEM memory model: config ARCH_FLATMEM_ENABLE def_bool y depends on X86_32 && !NUMA so FLATMEM is ruled out via dependency maze. Be explicit and disable FLATMEM for DEFERRED_STRUCT_PAGE_INIT so that we do not reintroduce subtle initialization bugs [1] http://lkml.kernel.org/r/20160523073157.GD2278@dhcp22.suse.cz Link: http://lkml.kernel.org/r/1464027356-32282-1-git-send-email-yang.shi@linaro.org Signed-off-by: Yang Shi <yang.shi@linaro.org> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26seqlock: fix raw_read_seqcount_latch()Alexey Dobriyan1-2/+2
lockless_dereference() is supposed to take pointer not integer. Link: http://lkml.kernel.org/r/20160521201448.GA7429@p183.telecom.by Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-26pnfs: pnfs_update_layout needs to consider if strict iomode checking is onTom Haynes4-25/+61
As flexfiles has FF_FLAGS_NO_READ_IO, there is a need to generically support enforcing that a IOMODE_RW segment will not allow READ I/O. Signed-off-by: Tom Haynes <loghyr@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-26nfs/flexfiles: Use the layout segment for reading unless it a IOMODE_RW and reading is disabledTom Haynes1-2/+3
Signed-off-by: Tom Haynes <loghyr@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-26Documentation/hwmon: Update links in max34440Glenn Dayton1-3/+3
It appears the website for maxim-ic.com changed to maximintegrated.com. Signed-off-by: Glenn Dayton <glenn.dayton24@gmail.com> Signed-off-by: Jean Delvare <jdelvare@suse.de>
2016-05-26hwmon: (emc2103) Fix typo in MODULE_PARM_DESCDan Carpenter1-1/+1
"apd" was intended here instead of "init". Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jean Delvare <jdelvare@suse.de>
2016-05-26Yama: fix double-spinlock and user access in atomic contextJann Horn1-6/+63
Commit 8a56038c2aef ("Yama: consolidate error reporting") causes lockups when someone hits a Yama denial. Call chain: process_vm_readv -> process_vm_rw -> process_vm_rw_core -> mm_access -> ptrace_may_access task_lock(...) is taken __ptrace_may_access -> security_ptrace_access_check -> yama_ptrace_access_check -> report_access -> kstrdup_quotable_cmdline -> get_cmdline -> access_process_vm -> get_task_mm task_lock(...) is taken again task_lock(p) just calls spin_lock(&p->alloc_lock), so at this point, spin_lock() is called on a lock that is already held by the current process. Also: Since the alloc_lock is a spinlock, sleeping inside security_ptrace_access_check hooks is probably not allowed at all? So it's not even possible to print the cmdline from in there because that might involve paging in userspace memory. It would be tempting to rewrite ptrace_may_access() to drop the alloc_lock before calling the LSM, but even then, ptrace_may_access() itself might be called from various contexts in which you're not allowed to sleep; for example, as far as I understand, to be able to hold a reference to another task, usually an RCU read lock will be taken (see e.g. kcmp() and get_robust_list()), so that also prohibits sleeping. (And using e.g. FUSE, a user can cause pagefault handling to take arbitrary amounts of time - see https://bugs.chromium.org/p/project-zero/issues/detail?id=808.) Therefore, AFAIK, in order to print the name of a process below security_ptrace_access_check(), you'd have to either grab a reference to the mm_struct and defer the access violation reporting or just use the "comm" value that's stored in kernelspace and accessible without big complications. (Or you could try to use some kind of atomic remote VM access that fails if the memory isn't paged in, similar to copy_from_user_inatomic(), and if necessary fall back to comm, but that'd be kind of ugly because the comm/cmdline choice would look pretty random to the user.) Fix it by deferring reporting of the access violation until current exits kernelspace the next time. v2: Don't oops on PTRACE_TRACEME, call report_access under task_lock(current). Also fix nonsensical comment. And don't use GPF_ATOMIC for memory allocation with no locks held. This patch is tested both for ptrace attach and ptrace traceme. Fixes: 8a56038c2aef ("Yama: consolidate error reporting") Signed-off-by: Jann Horn <jann@thejh.net> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: James Morris <james.l.morris@oracle.com>
2016-05-26ceph: fix wake_up_session_cb()Yan, Zheng1-1/+1
We should reset i_requested_max_size before waking the waiters. (zero i_requested_max_size make waiter re-request the max size) Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: don't use truncate_pagecache() to invalidate read cacheYan, Zheng2-5/+7
truncate_pagecache() drops dirty pages, it's dangerous to use it to invalidate read cache. Besides, we shouldn't start invalidating read cache while there are buffer writers. Because buffer writers may add dirty pages later. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: SetPageError() for writeback pages if writepages failsYan, Zheng1-1/+3
Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: handle interrupted ceph_writepage()Yan, Zheng1-4/+18
writepage() can be interrupted when it's called by direct memory reclaimer (the direct memory relaimer is killed). To avoid lossing data, we redirty the page. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: make ceph_update_writeable_page() uninterruptibleYan, Zheng1-1/+1
ceph_update_writeable_page() is used by ceph_write_begin(). It beaks atomicity of write operation if it's interruptible. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26libceph: make ceph_osdc_wait_request() uninterruptibleYan, Zheng1-1/+1
Ceph_osdc_wait_request() is used when cephfs issues sync IO. In most cases, the sync IO should be uninterruptible. The fix is use killale wait function in ceph_osdc_wait_request(). Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: handle -EAGAIN returned by ceph_update_writeable_page()Yan, Zheng1-13/+15
when ceph_update_writeable_page() return -EAGAIN, caller should lock the page and call ceph_update_writeable_page() again. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: make fault/page_mkwrite return VM_FAULT_OOM for -ENOMEMYan, Zheng1-20/+17
Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: block non-fatal signals for fault/page_mkwriteYan, Zheng1-27/+39
Fault and page_mkwrite are supposed to be uninterruptable. But they call ceph functions that are interruptible. So they should block signals before calling functions that are interruptible Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: make logical calculation functions return boolZhang Zhuoyu6-9/+9
This patch makes serverl logical caculation functions return bool to improve readability due to these particular functions only using 0/1 as their return value. No functional change. Signed-off-by: Zhang Zhuoyu <zhangzhuoyu@cmss.chinamobile.com>
2016-05-26ceph: tolerate bad i_size for symlink inodeYan, Zheng1-7/+15
A mds bug can cause symlink's size to be truncated to zero. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: improve fragtree change detectionYan, Zheng2-4/+21
check if number of splits in i_fragtree is equal to number of splits in mds reply Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: keep leaf frag when updating fragtreeYan, Zheng1-5/+23
Nodes in i_fragtree are sorted according to ceph_compare_frag(). It means frag node in i_fragtree always follow its direct parent node. To check if a leaf node is valid, we just need to check if it's child of previous split node. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: fix dir_auth check in ceph_fill_dirfrag()Yan, Zheng1-0/+3
-1 is CDIR_AUTH_PARENT, it means dir's auth mds is the same as inode's auth mds Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: don't assume frag tree splits in mds reply are sortedYan, Zheng1-0/+13
The algorithm that updates i_fragtree relies on that the frag tree splits in mds reply are of the same order of i_fragtree. This is not true because current MDS encodes frag tree splits in ascending order of (unsigned)frag_t. But nodes in i_fragtree are sorted according to ceph_frag_compare(). The fix is sort the frag tree splits first, then updates i_fragtree. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: fix inode reference leakYan, Zheng1-1/+1
Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: using hash value to compose dentry offsetYan, Zheng6-47/+136
If MDS sorts dentries in dirfrag in hash order, we use hash value to compose dentry offset. dentry offset is: (0xff << 52) | ((24 bits hash) << 28) | (the nth entry hash hash collision) This offset is stable across directory fragmentation. This alos means there is no need to reset readdir offset if directory get fragmented in the middle of readdir. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: don't forbid marking directory complete after forward seekYan, Zheng1-5/+0
Forward seek within same frag does not update fi->last_name, it will not affect contents of later readdir reply. So there is no need to forbid marking directory complete Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: record 'offset' for each entry of readdir resultYan, Zheng5-29/+59
This is preparation for using hash value as dentry 'offset' Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: define 'end/complete' in readdir reply as bit flagsYan, Zheng4-3/+20
Set a flag in readdir request, which indicates that client interprets 'end/complete' as bit flags. So that mds can reply additional flags in readdir reply. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: define struct for dir entry in readdir replyYan, Zheng4-52/+50
This avoids defining multiple arrays for entries in readdir reply Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: simplify 'offset in frag'Yan, Zheng2-13/+4
don't distinguish leftmost frag from other frags. always use 2 as first entry's offset. Signed-off-by: Yan, Zheng <zyan@redhat.com>
2016-05-26ceph: remove unnecessary checks in __dcache_readdirYan, Zheng1-2/+0
we never add snapdir and the hidden .ceph dir into readdir cache Signed-off-by: Yan, Zheng <zyan@redhat.com>
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