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- 01 Mar, 2016 4 commits
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Harish Chegondi authored
This would reduce L2 cache misses on s_sde in the _hfi1_schedule_send function when invoked from post_send thereby improving performance of post_send. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Harish Chegondi <harish.chegondi@intel.com> Signed-off-by: Jubin John <jubin.john@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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jubin.john@intel.com authored
This patch fixes the checkpatch issue: CHECK: Prefer using the BIT macro Use of BIT macro for HDRQ_INCREMENT in chip.h causes a change in format specifier for error message in init.c in order to avoid a build warning. Reviewed-by: Dean Luick <dean.luick@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Jubin John <jubin.john@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Dean Luick authored
Correctly set half-swing for integrated devices. A0 needs all fields set for CcePcieCtrl. B0 and later only need a few fields set. Reviewed-by: Stuart Summers <john.s.summers@intel.com> Signed-off-by: Dean Luick <dean.luick@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Ira Weiny authored
To be used in future patches add dd_dev_dbg. dd_* functions properly decode the hfi1_devdata structure used throughout the driver Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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- 29 Feb, 2016 13 commits
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Mitko Haralanov authored
This commit "flips the switch" on the TID caching feature implemented in this patch series. As well as enabling the new feature by tying the new function with the PSM API, it also cleans up the old unneeded code, data structure members, and variables. Due to difference in operation and information, the tracing functions related to expected receives had to be changed. This patch include these changes. The tracing function changes could not be split into a separate commit without including both tracing variants at the same time. This would have caused other complications and ugliness. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
The previous patch in the series added the free/invalidate function bodies. Now, it's time for the programming side. This large function takes the user's buffer, breaks it up into manageable chunks, allocates enough RcvArray groups and programs the chunks into the RcvArray entries in the hardware. With this function, the TID caching functionality is implemented. However, it is still unused. The switch will come in a later patch in the series, which will remove the old functionality and switch the driver over to TID caching. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
Up to now, the functions which cleared the programmed TID entries and gave PSM the list of invalidated TID entries were just stubs. With this commit, the bodies of these functions are added. This commit is a bit asymmetric as it only contains the free code path. This is done on purpose to help with patch reviews as the programming code path is much longer. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
TID caching will rely on the MMU notifier to be told when memory is being invalidated. When the callback is called, the driver will find all RcvArray entries that span the invalidated buffer and "schedule" them to be freed by the PSM library. This function is currently unused and is being added in preparation for the TID caching feature. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
The upcoming TID caching feature requires different data structures and, by extension, different initialization for each of the MPI processes. The two new functions (currently unused) perform the required initialization and freeing of required resources and structures. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
The exp_lock lock does not need to be a spinlock as all its uses are in process context and allowing the process to sleep when the mutex is contended might be beneficial. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
Functions added by this patch are building blocks for the upcoming TID caching functionality. The functions added are currently unsed (and marked as such.) The functions' purposes are to find physically contigous pages in the user's virtual buffer, program the RcvArray group entries with these physical chunks, and unprogram the RcvArray groups. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
Definitions and functions use to manage sets of TID/RcvArray groups. These will be used by the TID cacheline functionality coming with later patches. TID groups (or RcvArray groups) are groups of TID/RcvArray entries organized in sets of 8 and aligned on cacheline boundaries. The TID/RcvArray entries are managed in this way to make taking advantage of write-combining easier - each group is a entire cacheline. rcv_array_wc_fill() is provided to allow of generating writes to TIDs which are not currently being used in order to cause the flush of the write-combining buffer. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
There is no need to use a separate variable for a return value and a label when returning right away would do just as well. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
In preparation for adding the TID caching support, there is a set of headers, structures, and variables which will be needed. This commit adds them to the hfi.h header file. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
TID caching will use a new event to signal userland that cache invalidation has occurred and needs a matching command code that will be used to read the invalidated TIDs. Add the event bit and the new command to the exported header file. The command is also added to the switch() statement in file_ops.c for completeness and in preparation for its usage later. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
The HFI1_CAP_TID_UNMAP comment was incorrectly implying the opposite of what capability actually did. Correct this error. Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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Mitko Haralanov authored
Add mmu notify helper functions and TID caching function stubs in preparation for the TID caching implementation. TID caching makes use of the MMU notifier to allow the driver to respond to the user freeing memory which is allocated to the HFI. This patch implements the basic MMU notifier functions to insert, find and remove buffer pages from memory based on the mmu_notifier being invoked. In addition it places stubs in place for the main entry points by follow on code. Follow up patches will complete the implementation of the interaction with user space and makes use of these functions. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
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- 28 Feb, 2016 15 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Thomas Gleixner: "A rather largish series of 12 patches addressing a maze of race conditions in the perf core code from Peter Zijlstra" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Robustify task_function_call() perf: Fix scaling vs. perf_install_in_context() perf: Fix scaling vs. perf_event_enable() perf: Fix scaling vs. perf_event_enable_on_exec() perf: Fix ctx time tracking by introducing EVENT_TIME perf: Cure event->pending_disable race perf: Fix race between event install and jump_labels perf: Fix cloning perf: Only update context time when active perf: Allow perf_release() with !event->ctx perf: Do not double free perf: Close install vs. exit race
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "This update contains: - Hopefully the last ASM CLAC fixups - A fix for the Quark family related to the IMR lock which makes kexec work again - A off-by-one fix in the MPX code. Ironic, isn't it? - A fix for X86_PAE which addresses once more an unsigned long vs phys_addr_t hickup" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mpx: Fix off-by-one comparison with nr_registers x86/mm: Fix slow_virt_to_phys() for X86_PAE again x86/entry/compat: Add missing CLAC to entry_INT80_32 x86/entry/32: Add an ASM_CLAC to entry_SYSENTER_32 x86/platform/intel/quark: Change the kernel's IMR lock bit to false
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixlet from Thomas Gleixner: "A trivial printk typo fix" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/deadline: Fix trivial typo in printk() message
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Thomas Gleixner: "Four small fixes for irqchip drivers: - Add missing low level irq handler initialization on mxs, so interrupts can acutally be delivered - Add a missing barrier to the GIC driver - Two fixes for the GIC-V3-ITS driver, addressing a double EOI write and a cache flush beyond the actual region" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/gic-v3: Add missing barrier to 32bit version of gic_read_iar() irqchip/mxs: Add missing set_handle_irq() irqchip/gicv3-its: Avoid cache flush beyond ITS_BASERn memory size irqchip/gic-v3-its: Fix double ICC_EOIR write for LPI in EOImode==1
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/stagingLinus Torvalds authored
Pull staging/android fix from Greg KH: "Here is one patch, for the android binder driver, to resolve a reported problem. Turns out it has been around for a while (since 3.15), so it is good to finally get it resolved. It has been in linux-next for a while with no reported issues" * tag 'staging-4.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: drivers: android: correct the size of struct binder_uintptr_t for BC_DEAD_BINDER_DONE
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg KH: "Here are a few USB fixes for 4.5-rc6 They fix a reported bug for some USB 3 devices by reverting the recent patch, a MAINTAINERS change for some drivers, some new device ids, and of course, the usual bunch of USB gadget driver fixes. All have been in linux-next for a while with no reported issues" * tag 'usb-4.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: MAINTAINERS: drop OMAP USB and MUSB maintainership usb: musb: fix DMA for host mode usb: phy: msm: Trigger USB state detection work in DRD mode usb: gadget: net2280: fix endpoint max packet for super speed connections usb: gadget: gadgetfs: unregister gadget only if it got successfully registered usb: gadget: remove driver from pending list on probe error Revert "usb: hub: do not clear BOS field during reset device" usb: chipidea: fix return value check in ci_hdrc_pci_probe() usb: chipidea: error on overflow for port_test_write USB: option: add "4G LTE usb-modem U901" USB: cp210x: add IDs for GE B650V3 and B850V3 boards USB: option: add support for SIM7100E usb: musb: Fix DMA desired mode for Mentor DMA engine usb: gadget: fsl_qe_udc: fix IS_ERR_VALUE usage usb: dwc2: USB_DWC2 should depend on HAS_DMA usb: dwc2: host: fix the data toggle error in full speed descriptor dma usb: dwc2: host: fix logical omissions in dwc2_process_non_isoc_desc usb: dwc3: Fix assignment of EP transfer resources usb: dwc2: Add extra delay when forcing dr_mode
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull vfs fixes from Al Viro. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: do_last(): ELOOP failure exit should be done after leaving RCU mode should_follow_link(): validate ->d_seq after having decided to follow namei: ->d_inode of a pinned dentry is stable only for positives do_last(): don't let a bogus return value from ->open() et.al. to confuse us fs: return -EOPNOTSUPP if clone is not supported hpfs: don't truncate the file when delete fails
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull ARM SoC fixes from Olof Johansson: "We didn't have a batch last week, so this one is slightly larger. None of them are scary though, a handful of fixes for small DT pieces, replacing properties with newer conventions. Highlights: - N900 fix for setting system revision - onenand init fix to avoid filesystem corruption - Clock fix for audio on Beaglebone-x15 - Fixes on shmobile to deal with CONFIG_DEBUG_RODATA (default y in 4.6) + misc smaller stuff" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: MAINTAINERS: Extend info, add wiki and ml for meson arch MAINTAINERS: alpine: add a new maintainer and update the entry ARM: at91/dt: fix typo in sama5d2 pinmux descriptions ARM: OMAP2+: Fix onenand initialization to avoid filesystem corruption Revert "regulator: tps65217: remove tps65217.dtsi file" ARM: shmobile: Remove shmobile_boot_arg ARM: shmobile: Move shmobile_smp_{mpidr, fn, arg}[] from .text to .bss ARM: shmobile: r8a7779: Remove remainings of removed SCU boot setup code ARM: shmobile: Move shmobile_scu_base from .text to .bss ARM: OMAP2+: Fix omap_device for module reload on PM runtime forbid ARM: OMAP2+: Improve omap_device error for driver writers ARM: DTS: am57xx-beagle-x15: Select SYS_CLK2 for audio clocks ARM: dts: am335x/am57xx: replace gpio-key,wakeup with wakeup-source property ARM: OMAP2+: Set system_rev from ATAGS for n900 ARM: dts: orion5x: fix the missing mtd flash on linkstation lswtgl ARM: dts: kirkwood: use unique machine name for ds112 ARM: dts: imx6: remove bogus interrupt-parent from CAAM node
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Al Viro authored
... or we risk seeing a bogus value of d_is_symlink() there. Cc: stable@vger.kernel.org # v4.2+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Al Viro authored
... otherwise d_is_symlink() above might have nothing to do with the inode value we've got. Cc: stable@vger.kernel.org # v4.2+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Al Viro authored
both do_last() and walk_component() risk picking a NULL inode out of dentry about to become positive, *then* checking its flags and seeing that it's not negative anymore and using (already stale by then) value they'd fetched earlier. Usually ends up oopsing soon after that... Cc: stable@vger.kernel.org # v3.13+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Al Viro authored
... into returning a positive to path_openat(), which would interpret that as "symlink had been encountered" and proceed to corrupt memory, etc. It can only happen due to a bug in some ->open() instance or in some LSM hook, etc., so we report any such event *and* make sure it doesn't trick us into further unpleasantness. Cc: stable@vger.kernel.org # v3.6+, at least Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Christoph Hellwig authored
-EBADF is a rather confusing error if an operations is not supported, and nfsd gets rather upset about it. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Mikulas Patocka authored
The delete opration can allocate additional space on the HPFS filesystem due to btree split. The HPFS driver checks in advance if there is available space, so that it won't corrupt the btree if we run out of space during splitting. If there is not enough available space, the HPFS driver attempted to truncate the file, but this results in a deadlock since the commit 7dd29d8d ("HPFS: Introduce a global mutex and lock it on every callback from VFS"). This patch removes the code that tries to truncate the file and -ENOSPC is returned instead. If the user hits -ENOSPC on delete, he should try to delete other files (that are stored in a leaf btree node), so that the delete operation will make some space for deleting the file stored in non-leaf btree node. Reported-by: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Cc: stable@vger.kernel.org # 2.6.39+ Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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- 27 Feb, 2016 8 commits
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Linus Torvalds authored
Merge fixes from Andrew Morton: "10 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: dax: move writeback calls into the filesystems dax: give DAX clearing code correct bdev ext4: online defrag not supported with DAX ext2, ext4: only set S_DAX for regular inodes block: disable block device DAX by default ocfs2: unlock inode if deleting inode from orphan fails mm: ASLR: use get_random_long() drivers: char: random: add get_random_long() mm: numa: quickly fail allocations for NUMA balancing on full nodes mm: thp: fix SMP race condition between THP page fault and MADV_DONTNEED
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git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4Linus Torvalds authored
Pull ext2/4 DAX fix from Ted Ts'o: "This fixes a file system corruption bug with DAX" * tag 'tags/ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: ext2, ext4: fix issue with missing journal entry in ext4_dax_mkwrite()
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pciLinus Torvalds authored
Pull PCI fixes from Bjorn Helgaas: "Enumeration: Revert x86 pcibios_alloc_irq() to fix regression (Bjorn Helgaas) Marvell MVEBU host bridge driver: Restrict build to 32-bit ARM (Thierry Reding)" * tag 'pci-v4.5-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI: mvebu: Restrict build to 32-bit ARM Revert "PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()" Revert "PCI: Add helpers to manage pci_dev->irq and pci_dev->irq_managed" Revert "x86/PCI: Don't alloc pcibios-irq when MSI is enabled"
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Ross Zwisler authored
As it is currently written ext4_dax_mkwrite() assumes that the call into __dax_mkwrite() will not have to do a block allocation so it doesn't create a journal entry. For a read that creates a zero page to cover a hole followed by a write that actually allocates storage this is incorrect. The ext4_dax_mkwrite() -> __dax_mkwrite() -> __dax_fault() path calls get_blocks() to allocate storage. Fix this by having the ->page_mkwrite fault handler call ext4_dax_fault() as this function already has all the logic needed to allocate a journal entry and call __dax_fault(). Also update the ext2 fault handlers in this same way to remove duplicate code and keep the logic between ext2 and ext4 the same. Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clk fix from Stephen Boyd: "One small fix to keep OMAP platforms working across a suspend/resume cycle" * tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: clk: ti: omap3+: dpll: use non-locking version of clk_get_rate
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Ross Zwisler authored
Previously calls to dax_writeback_mapping_range() for all DAX filesystems (ext2, ext4 & xfs) were centralized in filemap_write_and_wait_range(). dax_writeback_mapping_range() needs a struct block_device, and it used to get that from inode->i_sb->s_bdev. This is correct for normal inodes mounted on ext2, ext4 and XFS filesystems, but is incorrect for DAX raw block devices and for XFS real-time files. Instead, call dax_writeback_mapping_range() directly from the filesystem ->writepages function so that it can supply us with a valid block device. This also fixes DAX code to properly flush caches in response to sync(2). Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Signed-off-by: Jan Kara <jack@suse.cz> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Jens Axboe <axboe@fb.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Ross Zwisler authored
dax_clear_blocks() needs a valid struct block_device and previously it was using inode->i_sb->s_bdev in all cases. This is correct for normal inodes on mounted ext2, ext4 and XFS filesystems, but is incorrect for DAX raw block devices and for XFS real-time devices. Instead, rename dax_clear_blocks() to dax_clear_sectors(), and change its arguments to take a bdev and a sector instead of an inode and a block. This better reflects what the function does, and it allows the filesystem and raw block device code to pass in an appropriate struct block_device. Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Suggested-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Dave Chinner <david@fromorbit.com> Cc: Jens Axboe <axboe@fb.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Ross Zwisler authored
Online defrag operations for ext4 are hard coded to use the page cache. See ext4_ioctl() -> ext4_move_extents() -> move_extent_per_page() When combined with DAX I/O, which circumvents the page cache, this can result in data corruption. This was observed with xfstests ext4/307 and ext4/308. Fix this by only allowing online defrag for non-DAX files. Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Theodore Ts'o <tytso@mit.edu> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Jens Axboe <axboe@fb.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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