- 01 Aug, 2011 1 commit
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Josef Bacik authored
In btrfs we have 2 indexes for inodes. One is for readdir, it's in this nice sequential order and works out brilliantly for readdir. However if you use ls, it usually stat's each file it gets from readdir. This is where the second index comes in, which is based on a hash of the name of the file. So then the lookup has to lookup this index, and then lookup the inode. The index lookup is going to be in random order (since its based on the name hash), which gives us less than stellar performance. Since we know the inode location from the readdir index, I create a dummy dentry and copy the location key into dentry->d_fsdata. Then on lookup if we have d_fsdata we use that location to lookup the inode, avoiding looking up the other directory index. Thanks, Signed-off-by:
Josef Bacik <josef@redhat.com> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk>
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- 28 Jul, 2011 2 commits
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Al Viro authored
create_path() on something without a single / in it will return err without initializing it. It actually can't happen (we call that thing only if create on the same path returns -ENOENT, which won't happen happen for single-component path), but in this case initializing err to 0 is more than making compiler to STFU - would be the right thing to return on such paths; the function creates a parent directory of given pathname and in that case it has no work to do... Signed-off-by: -
Al Viro authored
Signed-off-by:
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- 27 Jul, 2011 7 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6Linus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6: merge fchmod() and fchmodat() guts, kill ancient broken kludge xfs: fix misspelled S_IS...() xfs: get rid of open-coded S_ISREG(), etc. vfs: document locking requirements for d_move, __d_move and d_materialise_unique omfs: fix (mode & S_IFDIR) abuse btrfs: S_ISREG(mode) is not mode & S_IFREG... ima: fmode_t misspelled as mode_t... pci-label.c: size_t misspelled as mode_t jffs2: S_ISLNK(mode & S_IFMT) is pointless snd_msnd ->mode is fmode_t, not mode_t v9fs_iop_get_acl: get rid of unused variable vfs: dont chain pipe/anon/socket on superblock s_inodes list Documentation: Exporting: update description of d_splice_alias fs: add missing unlock in default_llseek()
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-socLinus Torvalds authored
* 'next/devel2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (47 commits) OMAP: Add debugfs node to show the summary of all clocks OMAP2+: hwmod: Follow the recommended PRCM module enable sequence OMAP2+: clock: allow per-SoC clock init code to prevent clockdomain calls from clock code OMAP2+: clockdomain: Add per clkdm lock to prevent concurrent state programming OMAP2+: PM: idle clkdms only if already in idle OMAP2+: clockdomain: add clkdm_in_hwsup() OMAP2+: clockdomain: Add 2 APIs to control clockdomain from hwmod framework OMAP: clockdomain: Remove redundant call to pwrdm_wait_transition() OMAP4: hwmod: Introduce the module control in hwmod control OMAP4: cm: Add two new APIs for modulemode control OMAP4: hwmod data: Add modulemode entry in omap_hwmod structure OMAP4: hwmod data: Add PRM context register offset OMAP4: prm: Remove deprecated functions OMAP4: prm: Replace warm reset API with the offset based version OMAP4: hwmod: Replace RSTCTRL absolute address with offset macros OMAP: hwmod: Wait the idle status to be disabled OMAP4: hwmod: Replace CLKCTRL absolute address with offset macros OMAP2+: hwmod: Init clkdm field at boot time OMAP4: hwmod data: Add clock domain attribute OMAP4: clock data: Add missing divider selection for auxclks ...
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ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-socLinus Torvalds authored
* 'next/devel' of ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (128 commits) ARM: S5P64X0: External Interrupt Support ARM: EXYNOS4: Enable MFC on Samsung NURI ARM: EXYNOS4: Enable MFC on universal_c210 ARM: S5PV210: Enable MFC on Goni ARM: S5P: Add support for MFC device ARM: EXYNOS4: Add support FIMD on SMDKC210 ARM: EXYNOS4: Add platform device and helper functions for FIMD ARM: EXYNOS4: Add resource definition for FIMD ARM: EXYNOS4: Change devname for FIMD clkdev ARM: SAMSUNG: Add IRQ_I2S0 definition ARM: SAMSUNG: Add platform device for idma ARM: EXYNOS4: Add more registers to be saved and restored for PM ARM: EXYNOS4: Add more register addresses of CMU ARM: EXYNOS4: Add platform device for dwmci driver ARM: EXYNOS4: configure rtc-s3c on NURI ARM: EXYNOS4: configure MAX8903 secondary charger on NURI ARM: EXYNOS4: configure ADC on NURI ARM: EXYNOS4: configure MAX17042 fuel gauge on NURI ARM: EXYNOS4: configure regulators and PMIC(MAX8997) on NURI ARM: EXYNOS4: Increase NR_IRQS for devices with more IRQs ... Fix up tons of silly conflicts: - arch/arm/mach-davinci/include/mach/psc.h - arch/arm/mach-exynos4/Kconfig - arch/arm/mach-exynos4/mach-smdkc210.c - arch/arm/mach-exynos4/pm.c - arch/arm/mach-imx/mm-imx1.c - arch/arm/mach-imx/mm-imx21.c - arch/arm/mach-imx/mm-imx25.c - arch/arm/mach-imx/mm-imx27.c - arch/arm/mach-imx/mm-imx31.c - arch/arm/mach-imx/mm-imx35.c - arch/arm/mach-mx5/mm.c - arch/arm/mach-s5pv210/mach-goni.c - arch/arm/mm/Kconfig
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-socLinus Torvalds authored
* 'next/board' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: ARM: S3C64XX: Configure backup battery charger on Cragganmore ARM: S3C64XX: Fix WM8915 IRQ polarity on Cragganmore ARM: S3C64XX: Configure supplies for all Cragganmore regulators ARM: S3C64XX: Refresh Cragganmore support ARM: S3C64XX: Initial support for Wolfson/Simtec Cragganmore/Banff OMAP4: Keyboard: Mux changes in the board file omap: blaze: add mmc5/wl1283 device support omap: 4430SDP: Register the card detect GPIO properly arm: omap3: cm-t35: add support for cm-t3730 OMAP3: beagle: add support for beagleboard xM revision C OMAP3: rx-51: Add full regulator definitions omap: rx51: Platform support for lp5523 led chip
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Linus Torvalds authored
Merge branch 'next/cross-platform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc * 'next/cross-platform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: ARM: Consolidate the clkdev header files ARM: set vga memory base at run-time ARM: convert PCI defines to variables ARM: pci: make pcibios_assign_all_busses use pci_has_flag ARM: remove unnecessary mach/hardware.h includes pci: move microblaze and powerpc pci flag functions into asm-generic powerpc: rename ppc_pci_*_flags to pci_*_flags Fix up conflicts in arch/microblaze/include/asm/pci-bridge.h
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-socLinus Torvalds authored
* 'next/fixes2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (24 commits) ASoC: omap: McBSP: fix build breakage on OMAP1 OMAP: hwmod: fix the i2c-reset timeout during bootup I2C: OMAP2+: add correct functionality flags to all omap2plus i2c dev_attr I2C: OMAP2+: Tag all OMAP2+ hwmod defintions with I2C IP revision I2C: OMAP1/OMAP2+: create omap I2C functionality flags for each cpu_... test I2C: OMAP2+: Introduce I2C IP versioning constants I2C: OMAP2+: increase omap_i2c_dev_attr flags from u8 to u32 I2C: OMAP2+: Set hwmod flags to only allow 16-bit accesses to i2c OMAP4: hwmod data: Change DSS main_clk scheme OMAP4: powerdomain data: Remove unsupported MPU powerdomain state OMAP4: clock data: Keep GPMC clocks always enabled and hardware managed OMAP4: powerdomain data: Fix core mem states and missing cefuse flag OMAP2+: PM: Initialise sleep_switch to a non-valid value OMAP4: hwmod data: Modify DSS opt clocks OMAP4: iommu: fix clock name omap: iovmm: s/sg_dma_len(sg)/sg->length/ omap: iommu: fix pte programming arm: omap3: cm-t35: fix slow path warning arm: omap3: cm-t35: minor comments fixes omap: ZOOM: QUART: Request reset GPIO ...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-socLinus Torvalds authored
* 'next/soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: MAINTAINERS: add maintainer of CSR SiRFprimaII machine ARM: CSR: initializing L2 cache ARM: CSR: mapping early DEBUG_LL uart ARM: CSR: Adding CSR SiRFprimaII board support OMAP4: clocks: Update the clock tree with 4460 clock nodes OMAP4: PRCM: OMAP4460 specific PRM and CM register bitshifts OMAP4: ID: add omap_has_feature for max freq supported OMAP: ID: introduce chip detection for OMAP4460 ARM: Xilinx: merge board file into main platform code ARM: Xilinx: Adding Xilinx board support Fix up conflicts in arch/arm/mach-omap2/cm-regbits-44xx.h
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- 26 Jul, 2011 30 commits
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git://git.fluff.org/bjdooks/linuxLinus Torvalds authored
* 'next-i2c' of git://git.fluff.org/bjdooks/linux: i2c-eg20t : Fix the issue of Combined R/W transfer mode i2c-eg20t : Support Combined R/W transfer mode i2c: Tegra: Add DeviceTree support
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Mike Frysinger authored
Only a few core funcs need to be implemented for SMP systems, so allow the arches to override them while getting the rest for free. At least, this is enough to allow the Blackfin SMP port to use things. Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Cc: Arun Sharma <asharma@fb.com> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Mike Frysinger authored
Since arches are expected to implement this guy, add a common version for people the same way as atomic_clear_mask is handled. Signed-off-by:
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Mike Frysinger authored
The atomic helpers are supposed to take an atomic_t pointer, not a random unsigned long pointer. So convert atomic_clear_mask over. While we're here, also add some nice documentation to the func. Signed-off-by:
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Mike Frysinger authored
We already declared inc/dec helpers, so we don't need to call the atomic_{add,sub}_return funcs directly. Signed-off-by: -
Arun Sharma authored
This clarifies the differences between <linux/atomic.h> and <asm-generic/atomic.h> Signed-off-by:
Arun Sharma <asharma@fb.com> Suggested-by:
Mike Frysinger <vapier.adi@gmail.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Acked-by:
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Arun Sharma authored
After changing all consumers of atomics to include <linux/atomic.h>, we ran into some compile time errors due to this dependency chain: linux/atomic.h -> asm/atomic.h -> asm-generic/atomic-long.h where atomic-long.h could use funcs defined later in linux/atomic.h without a prototype. This patches moves the code that includes asm-generic/atomic*.h to linux/atomic.h. Archs that need <asm-generic/atomic64.h> need to select CONFIG_GENERIC_ATOMIC64 from now on (some of them used to include it unconditionally). Compile tested on i386 and x86_64 with allnoconfig. Signed-off-by: -
Arun Sharma authored
This is in preparation for more generic atomic primitives based on __atomic_add_unless. Signed-off-by:
Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Reviewed-by:
Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Acked-by:
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Arun Sharma authored
This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by:
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Akinobu Mita authored
The majority of architectures implement ext2 atomic bitops as test_and_{set,clear}_bit() without spinlock. This adds this type of generic implementation in ext2-atomic-setbit.h and use it wherever possible. Signed-off-by:Akinobu Mita <akinobu.mita@gmail.com> Suggested-by:
Andreas Dilger <adilger@dilger.ca> Suggested-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
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Akinobu Mita authored
This changes should_fail_request() to more usable wrapper function of should_fail(). It can avoid putting #ifdef CONFIG_FAIL_MAKE_REQUEST in the middle of a function. Signed-off-by:
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Akinobu Mita authored
Now cleanup_fault_attr_dentries() recursively removes a directory, So we can simplify the error handling in the initialization code and no need to hold dentry structs for each debugfs file. Signed-off-by:
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Akinobu Mita authored
Now cleanup_fault_attr_dentries() recursively removes a directory, So we can simplify the error handling in the initialization code and no need to hold dentry structs for each debugfs file. Signed-off-by:
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Akinobu Mita authored
Use debugfs_remove_recursive() to simplify initialization and deinitialization of fault injection debugfs files. Signed-off-by:
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Akinobu Mita authored
Minor cosmetic changes for simple attribute of stacktrace_depth: - use min_t() - reduce #ifdef by moving a function - do not use partly capitalized function name Signed-off-by:
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Akinobu Mita authored
should_fail_srandom() does not exist. Signed-off-by:
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Akinobu Mita authored
No need to include linux/kallsyms.h. Signed-off-by:
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Sergiu Iordache authored
The size of the dump is currently set using the RECORD_SIZE macro which is set to a page size. This patch makes the record size a module parameter and allows it to be set through platform data as well to allow larger dumps if needed. Signed-off-by:
Sergiu Iordache <sergiu@chromium.org> Acked-by:
Marco Stornelli <marco.stornelli@gmail.com> Cc: "Ahmed S. Darwish" <darwish.07@gmail.com> Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
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Sergiu Iordache authored
The platform driver currently allows setting the mem_size and mem_address. ince dump_oops is also a module parameter it would be more consistent if it could be set through platform data as well. Signed-off-by:
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Marco Stornelli authored
Add new line to each print. Signed-off-by:
Stevie Trujillo <stevie.trujillo@gmail.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Américo Wang <xiyou.wangcong@gmail.com> Cc: Joe Perches <joe@perches.com> Signed-off-by:
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Marco Stornelli authored
Use generic module parameters instead of platform data, if platform data are not available. This limitation has been introduced with commit c3b92ce9 ("ramoops: use the platform data structure instead of module params"). [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
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Dmitry Torokhov authored
With the arrival of concurrency-managed workqueues there is no need for our driver to use dedicated workqueue; system-wide one should suffice just fine. [akpm@linux-foundation.org: fix comment layout & grammar] Signed-off-by:
Dmitry Torokhov <dtor@vmware.com> Acked-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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Christian Glindkamp authored
Signed-off-by:
Christian Glindkamp <christian.glindkamp@taskit.de> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by:
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Mandeep Singh Baines authored
Don't force output if you intend to reboot immediately. In this patch, I'm disabling the functionality enabled by vc->vc_panic_force_write if panic_timeout < 0 (i.e. no timeout). vc_panic_force_write is only enabled for fb video consoles if the FBINFO_CAN_FORCE_OUTPUT flag is set. For our application, we're using ram_oops to preserved the panic in memory. We want to reliably, and as fast as possible, machine_restart. The vc_panic_force_write flag results in a bunch of graphics driver code to be invoked which slows down restart and decreases reliability. Since we're already storing the panic in RAM and are going to reboot immediately, there is no benefit in mode switching back to the vc in order to display the panic output. The log buffer will get flushed by the console_unblank() call so remote management consoles should see all output. Signed-off-by:
Mandeep Singh Baines <msb@chromium.org> Cc: Huang Ying <ying.huang@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Hugh Dickins <hughd@google.com> Cc: Olaf Hering <olaf@aepfle.de> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Cc: Dave Airlie <airlied@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Acked-by:
Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Hugh Dickins authored
When a kernel BUG or oops occurs, ChromeOS intends to panic and immediately reboot, with stacktrace and other messages preserved in RAM across reboot. But the longer we delay, the more likely the user is to poweroff and lose the info. panic_timeout (seconds before rebooting) is set by panic= boot option or sysctl or /proc/sys/kernel/panic; but 0 means wait forever, so at present we have to delay at least 1 second. Let a negative number mean reboot immediately (with the small cosmetic benefit of suppressing that newline-less "Rebooting in %d seconds.." message). Signed-off-by:
Hugh Dickins <hughd@chromium.org> Signed-off-by:
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Michal Miroslaw authored
See: DMA-API.txt, part Id, DMA_FROM_DEVICE description. Signed-off-by:
Michal Miroslaw <mirq-linux@rere.qmqm.pl> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by:
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WANG Cong authored
git grep shows there are no users in tree, so we can remove them safely. Signed-off-by:
WANG Cong <xiyou.wangcong@gmail.com> Acked-by:
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by:
Jiri Slaby <jslaby@suse.cz> Acked-by:
Vinod Koul <vinod.koul@intel.com> Signed-off-by:
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Vitaliy Ivanov authored
Selecting GCOV for UML causing configuration mismatch: warning: (GCOV_KERNEL) selects CONSTRUCTORS which has unmet direct dependencies (!UML) Constructors are not needed for UML. Signed-off-by:
Vitaliy Ivanov <vitalivanov@gmail.com> Cc: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Acked-by:
Richard Weinberger <richard@nod.at> Acked-by:
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Kai.Jiang authored
Parameter offset_in_page in edac_mc_handle_ce() should mask the higher bits above the page size, not the lower bits. The original input sometimes causes a crash. Signed-off-by:
Kai.Jiang <Kai.Jiang@freescale.com> Signed-off-by:
Shaohui Xie <Shaohui.Xie@freescale.com> Cc: Anton Vorontsov <avorontsov@mvista.com> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: "David S. Miller" <davem@davemloft.net> Cc: Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
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Vasiliy Kulikov authored
Add support for the shm_rmid_forced sysctl. If set to 1, all shared memory objects in current ipc namespace will be automatically forced to use IPC_RMID. The POSIX way of handling shmem allows one to create shm objects and call shmdt(), leaving shm object associated with no process, thus consuming memory not counted via rlimits. With shm_rmid_forced=1 the shared memory object is counted at least for one process, so OOM killer may effectively kill the fat process holding the shared memory. It obviously breaks POSIX - some programs relying on the feature would stop working. So set shm_rmid_forced=1 only if you're sure nobody uses "orphaned" memory. Use shm_rmid_forced=0 by default for compatability reasons. The feature was previously impemented in -ow as a configure option. [akpm@linux-foundation.org: fix documentation, per Randy] [akpm@linux-foundation.org: fix warning] [akpm@linux-foundation.org: readability/conventionality tweaks] [akpm@linux-foundation.org: fix shm_rmid_forced/shm_forced_rmid confusion, use standard comment layout] Signed-off-by:
Vasiliy Kulikov <segoon@openwall.com> Cc: Randy Dunlap <rdunlap@xenotime.net> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: "Serge E. Hallyn" <serge.hallyn@canonical.com> Cc: Daniel Lezcano <daniel.lezcano@free.fr> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Tejun Heo <tj@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Cc: Solar Designer <solar@openwall.com> Signed-off-by:
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