- 02 Aug, 2016 40 commits
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Alexandre Bounine authored
Fix lockdep warning during device probing: move sysfs initialization out of code protected by a spin lock. Link: http://lkml.kernel.org/r/1469125134-16523-10-git-send-email-alexandre.bounine@idt.comSigned-off-by:
Alexandre Bounine <alexandre.bounine@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Barry Wood <barry.wood@idt.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Alexandre Bounine authored
Add checking for error code returned by HW-specific mbox open routines. Ensure that resources are properly release if failed. This patch is applicable to kernel versions starting from v2.6.15. Link: http://lkml.kernel.org/r/1469125134-16523-9-git-send-email-alexandre.bounine@idt.comSigned-off-by:
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Alexandre Bounine authored
Add advancing transfer queue immediately from transfer submit call. DMA performance improvement: This will start transfer without waiting for 'issue_pending' command if there is no DMA transfer in progress. Link: http://lkml.kernel.org/r/1469125134-16523-8-git-send-email-alexandre.bounine@idt.comSigned-off-by:
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Alexandre Bounine authored
Add module parameter to allow load time configuration of available RapidIO messaging mailboxes (MBOX1 - MBOX4). Having a messaging MBOX selector mask allows to define which MBOXes are controlled by the mport device driver and reserve some of them for direct use by other drivers. Link: http://lkml.kernel.org/r/1469125134-16523-7-git-send-email-alexandre.bounine@idt.comSigned-off-by:
Barry Wood <barry.wood@idt.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Andre van Herk <andre.van.herk@prodrive-technologies.com> Cc: Barry Wood <barry.wood@idt.com> Signed-off-by:
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Alexandre Bounine authored
Add PCIe Maximum Read Request Size (MRRS) adjustment parameter to allow users to override configuration register value set during PCIe bus initialization. Performance of Tsi721 device as PCIe bus master can be improved if MRRS is set to its maximum value (4096 bytes). Some platforms have limitations for supported MRRS and therefore the default value should be preserved, unless it is known that given platform supports full set of MRRS values defined by PCI Express specification. Link: http://lkml.kernel.org/r/1469125134-16523-6-git-send-email-alexandre.bounine@idt.comSigned-off-by:
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Alexandre Bounine authored
Add module parameters to allow load time configuration of DMA channels. Depending on application, performance of DMA data transfers can benefit from adjusted sizes of buffer descriptor ring and/or transaction requests queue. Having HW DMA channel selector mask allows to define which channels (from seven available) are controlled by the mport device driver and reserve some of them for direct use by other drivers. Link: http://lkml.kernel.org/r/1469125134-16523-5-git-send-email-alexandre.bounine@idt.comSigned-off-by:
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Alexandre Bounine authored
Update return value description for rio_dma_prep_... functions to include error-valued pointer that can be returned by HW mport device drivers. Return values from these functions must be checked using IS_ERR_OR_NULL macro. This patch is applicable to kernel versions starting from v4.6-rc1. Link: http://lkml.kernel.org/r/1469125134-16523-4-git-send-email-alexandre.bounine@idt.comSigned-off-by:
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Alexandre Bounine authored
Minor edits to correct parameter description. This patch is applicable to kernel versions starting from v4.6. Link: http://lkml.kernel.org/r/1469125134-16523-3-git-send-email-alexandre.bounine@idt.comSigned-off-by:
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Joe Perches authored
Patch series "RapidIO subsystem updates". This set of patches contains RapidIO subsystem fixes and updates that have been made since kernel v4.6. The most significant update brings changes related to the latest revision of RapidIO specification (rev.3.x) and introduction of next generation of RapidIO switches by IDT (RXS1632 and RXS2448). This patch (of 13): This is RapidIO part of the original patch submitted by Joe Perches. (see: https://lkml.org/lkml/2016/3/5/19) Since commit 3cab1e71 ("lib/vsprintf: refactor duplicate code to special_hex_number()") %pa uses have been output with a 0x prefix. These 0x prefixes in the formats are unnecessary. Link: http://lkml.kernel.org/r/1469125134-16523-2-git-send-email-alexandre.bounine@idt.comSigned-off-by:
Joe Perches <joe@perches.com> Signed-off-by:
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Alexandre Bounine authored
Add channelized messaging driver to support native RapidIO messaging exchange between multiple senders/recipients on devices that use kernel RapidIO subsystem services. This device driver is the result of collaboration within the RapidIO.org Software Task Group (STG) between Texas Instruments, Prodrive Technologies, Nokia Networks, BAE and IDT. Additional input was received from other members of RapidIO.org. The objective was to create a character mode driver interface which exposes messaging capabilities of RapidIO endpoint devices (mports) directly to applications, in a manner that allows the numerous and varied RapidIO implementations to interoperate. This char mode device driver allows user-space applications to setup messaging communication channels using single shared RapidIO messaging mailbox. By default this driver uses RapidIO MBOX_1 (MBOX_0 is reserved for use by RIONET Ethernet emulation driver). [weiyj.lk@gmail.com: rapidio/rio_cm: fix return value check in riocm_init()] Link: http://lkml.kernel.org/r/1469198221-21970-1-git-send-email-alexandre.bounine@idt.com Link: http://lkml.kernel.org/r/1468952862-18056-1-git-send-email-alexandre.bounine@idt.comSigned-off-by:
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zhong jiang authored
I hit the following issue when run trinity in my system. The kernel is 3.4 version, but mainline has the same issue. The root cause is that the segment size is too large so the kerenl spends too long trying to allocate a page. Other cases will block until the test case quits. Also, OOM conditions will occur. Call Trace: __alloc_pages_nodemask+0x14c/0x8f0 alloc_pages_current+0xaf/0x120 kimage_alloc_pages+0x10/0x60 kimage_alloc_control_pages+0x5d/0x270 machine_kexec_prepare+0xe5/0x6c0 ? kimage_free_page_list+0x52/0x70 sys_kexec_load+0x141/0x600 ? vfs_write+0x100/0x180 system_call_fastpath+0x16/0x1b The patch changes sanity_check_segment_list() to verify that the usage by all segments does not exceed half of memory. [akpm@linux-foundation.org: fix for kexec-return-error-number-directly.patch, update comment] Link: http://lkml.kernel.org/r/1469625474-53904-1-git-send-email-zhongjiang@huawei.comSigned-off-by:
zhong jiang <zhongjiang@huawei.com> Suggested-by:
Eric W. Biederman <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Dave Young <dyoung@redhat.com> Signed-off-by:
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Petr Tesarik authored
If a crash kernel is loaded, do not crash the running domain. This is needed if the kernel is loaded with crash_kexec_post_notifiers, because panic notifiers are run before __crash_kexec() in that case, and this Xen hook prevents its being called later. [akpm@linux-foundation.org: build fix: unconditionally include kexec.h] Link: http://lkml.kernel.org/r/20160713122000.14969.99963.stgit@hananiah.suse.czSigned-off-by:
Petr Tesarik <ptesarik@suse.com> Cc: Juergen Gross <jgross@suse.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Eric Biederman <ebiederm@xmission.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Dave Young <dyoung@redhat.com> Cc: David Vrabel <david.vrabel@citrix.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by:
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Petr Tesarik authored
Provide a wrapper function to be used by kernel code to check whether a crash kernel is loaded. It returns the same value that can be seen in /sys/kernel/kexec_crash_loaded by userspace programs. I'm exporting the function, because it will be used by Xen, and it is possible to compile Xen modules separately to enable the use of PV drivers with unmodified bare-metal kernels. Link: http://lkml.kernel.org/r/20160713121955.14969.69080.stgit@hananiah.suse.czSigned-off-by:
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Hidehiro Kawai authored
crash_kexec_post_notifiers ia a boot option which controls whether the 1st kernel calls panic notifiers or not before booting the 2nd kernel. However, there is no need to limit it to being modifiable only at boot time. So, use core_param instead of early_param. Link: http://lkml.kernel.org/r/20160705113327.5864.43139.stgit@softrsSigned-off-by:
Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Dave Young <dyoung@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Borislav Petkov <bp@suse.de> Signed-off-by:
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Russell King authored
Provide kexec with the boot view of memory by overriding the normal kexec translation functions added in a previous patch. We also need to fix a call to memblock in machine_kexec_prepare() so that we provide it with a running-view physical address rather than a boot- view physical address. Link: http://lkml.kernel.org/r/E1b8koa-0004Hl-Ey@rmk-PC.armlinux.org.ukSigned-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Cc: Keerthy <j-keerthy@ti.com> Cc: Pratyush Anand <panand@redhat.com> Cc: Vitaly Andrianov <vitalya@ti.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Dave Young <dyoung@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Simon Horman <horms@verge.net.au> Signed-off-by:
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Vitaly Andrianov authored
This commit adds definition for cpu_on, cpu_off and cpu_suspend commands. These definitions must match the corresponding PSCI definitions in boot monitor. Having those command and corresponding PSCI support in boot monitor allows run time CPU hot plugin. Link: http://lkml.kernel.org/r/E1b8koV-0004Hf-2j@rmk-PC.armlinux.org.ukSigned-off-by:
Keerthy <j-keerthy@ti.com> Signed-off-by:
Vitaly Andrianov <vitalya@ti.com> Signed-off-by:
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Russell King authored
kexec physical addresses are the boot-time view of the system. For certain ARM systems (such as Keystone 2), the boot view of the system does not match the kernel's view of the system: the boot view uses a special alias in the lower 4GB of the physical address space. To cater for these kinds of setups, we need to translate between the boot view physical addresses and the normal kernel view physical addresses. This patch extracts the current transation points into linux/kexec.h, and allows an architecture to override the functions. Due to the translations required, we unfortunately end up with six translation functions, which are reduced down to four that the architecture can override. [akpm@linux-foundation.org: kexec.h needs asm/io.h for phys_to_virt()] Link: http://lkml.kernel.org/r/E1b8koP-0004HZ-Vf@rmk-PC.armlinux.org.ukSigned-off-by:
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Russell King authored
On PAE systems (eg, ARM LPAE) the vmcore note may be located above 4GB physical on 32-bit architectures, so we need a wider type than "unsigned long" here. Arrange for paddr_vmcoreinfo_note() to return a phys_addr_t, thereby allowing it to be located above 4GB. This makes no difference for kexec-tools, as they already assume a 64-bit type when reading from this file. Link: http://lkml.kernel.org/r/E1b8koK-0004HS-K9@rmk-PC.armlinux.org.ukSigned-off-by:
Pratyush Anand <panand@redhat.com> Acked-by:
Baoquan He <bhe@redhat.com> Cc: Keerthy <j-keerthy@ti.com> Cc: Vitaly Andrianov <vitalya@ti.com> Cc: Eric Biederman <ebiederm@xmission.com> Cc: Dave Young <dyoung@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: Simon Horman <horms@verge.net.au> Signed-off-by:
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Russell King authored
Ensure that user memory sizes do not wrap around when validating the user input, which can lead to the following input validation working incorrectly. [akpm@linux-foundation.org: fix it for kexec-return-error-number-directly.patch] Link: http://lkml.kernel.org/r/E1b8koF-0004HM-5x@rmk-PC.armlinux.org.ukSigned-off-by:
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Russell King authored
If we are unable to find a suitable page when allocating the control page, do not invoke the OOM-killer: killing processes probably isn't going to help. Link: http://lkml.kernel.org/r/E1b8ko9-0004HG-R5@rmk-PC.armlinux.org.ukSigned-off-by:
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Russell King authored
Advertise the location of bootable RAM to kexec-tools. kexec needs to know where it can place the kernel in RAM, and so be executable when the system needs to jump into it. Advertise these areas in /proc/iomem with a "System RAM (boot alias)" tag. Link: http://lkml.kernel.org/r/E1b8ko4-0004HA-GF@rmk-PC.armlinux.org.ukSigned-off-by:
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Russell King authored
Advertise a resource which describes where the crash kernel is located in the boot view of RAM. This allows kexec-tools to have this vital information. Link: http://lkml.kernel.org/r/E1b8knz-0004H4-Bd@rmk-PC.armlinux.org.ukSigned-off-by:
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Minfei Huang authored
This is a cleanup patch to make kexec more clear to return error number directly. The variable result is useless, because there is no other function's return value assignes to it. So remove it. Link: http://lkml.kernel.org/r/1464179273-57668-1-git-send-email-mnghuan@gmail.comSigned-off-by:
Minfei Huang <mnghuan@gmail.com> Cc: Dave Young <dyoung@redhat.com> Cc: Baoquan He <bhe@redhat.com> Cc: Borislav Petkov <bp@suse.de> Cc: Xunlei Pang <xlpang@redhat.com> Cc: Atsushi Kumagai <ats-kumagai@wm.jp.nec.com> Cc: Vivek Goyal <vgoyal@redhat.com> Signed-off-by:
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Geliang Tang authored
Fix code comment for cpumask_parse(). Link: http://lkml.kernel.org/r/71aae2c60ae5dae0cf554199ce6aea8f88c69347.1465380581.git.geliangtang@gmail.comSigned-off-by:
Geliang Tang <geliangtang@gmail.com> Acked-by:
Rusty Russell <rusty@rustcorp.com.au> Signed-off-by:
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Anton Blanchard authored
Many targets enable CONFIG_DEBUG_STACK_USAGE, and while the information is useful, it isn't worthy of pr_warn(). Reduce it to pr_info(). Link: http://lkml.kernel.org/r/1466982072-29836-1-git-send-email-anton@ozlabs.orgSigned-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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Andy Lutomirski authored
In general, there's no need for the "restore sigmask" flag to live in ti->flags. alpha, ia64, microblaze, powerpc, sh, sparc (64-bit only), tile, and x86 use essentially identical alternative implementations, placing the flag in ti->status. Replace those optimized implementations with an equally good common implementation that stores it in a bitfield in struct task_struct and drop the custom implementations. Additional architectures can opt in by removing their TIF_RESTORE_SIGMASK defines. Link: http://lkml.kernel.org/r/8a14321d64a28e40adfddc90e18a96c086a6d6f9.1468522723.git.luto@kernel.orgSigned-off-by:
Andy Lutomirski <luto@kernel.org> Tested-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Matt Turner <mattst88@gmail.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Michal Simek <monstr@monstr.eu> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Rich Felker <dalias@libc.org> Cc: "David S. Miller" <davem@davemloft.net> Cc: Chris Metcalf <cmetcalf@mellanox.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@suse.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dmitry Safonov <dsafonov@virtuozzo.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by:
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Jeff Mahoney authored
new_insert_key only makes any sense when it's associated with a new_insert_ptr, which is initialized to NULL and changed to a buffer_head when we also initialize new_insert_key. We can key off of that to avoid the uninitialized warning. Link: http://lkml.kernel.org/r/5eca5ffb-2155-8df2-b4a2-f162f105efed@suse.comSigned-off-by:
Jeff Mahoney <jeffm@suse.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Jan Kara <jack@suse.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Ryusuke Konishi authored
The header file "include/linux/nilfs2_fs.h" is composed of parts for ioctl and disk format, and both are intended to be shared with user space programs. This moves them to the uapi directory "include/uapi/linux" splitting the file to "nilfs2_api.h" and "nilfs2_ondisk.h". The following minor changes are accompanied by this migration: - nilfs_direct_node struct in nilfs2/direct.h is converged to nilfs2_ondisk.h because it's an on-disk structure. - inline functions nilfs_rec_len_from_disk() and nilfs_rec_len_to_disk() are moved to nilfs2/dir.c. Link: http://lkml.kernel.org/r/1465825507-3407-4-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by:
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Ryusuke Konishi authored
Replace bit shifts by BIT macro for clarity. Link: http://lkml.kernel.org/r/1465825507-3407-3-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Ryusuke Konishi authored
Variables ns_seg_seq, ns_segnum, ns_nextnum, ns_pseg_offset, ns_cno, ns_ctime, ns_nongc_ctime, and ns_ndirtyblks, are protected by ns_segctor_sem, but ns_sem is wrongly used by the nilfs sysfs code when reading these variables. This fixes the misuse and clarifies which semaphore protects them in the comment of the_nilfs struct. Link: http://lkml.kernel.org/r/1465825507-3407-2-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Ryusuke Konishi authored
Move parser of snapshot mount option to a separate function nilfs_parse_snapshot_option(), replace simple_strtoull() with kstrtoull() to avoid checkpatch.pl warning "WARNING: simple_strtoull is obsolete, use kstrtoull instead", and refine the error message of the parser. Link: http://lkml.kernel.org/r/1464875891-5443-9-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Ryusuke Konishi authored
Use cond_resched() instead of yield() in the loop of nilfs_transaction_lock() since the usage corresponds to the "be nice for others" case that the comment of yield() says. This removes the following checkpatch.pl warning: "WARNING: Using yield() is generally wrong. See yield() kernel-doc (sched/core.c)" Link: http://lkml.kernel.org/r/1464875891-5443-8-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Ryusuke Konishi authored
When nilfs returned -EIO as an error code, it's not always clear if it came from the underlying block device or not. This will mend the issue by having low level I/O routines of nilfs output an error message when they detected an I/O error. Link: http://lkml.kernel.org/r/1464875891-5443-7-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Ryusuke Konishi authored
Use nilfs_msg() to output warning messages and get rid of nilfs_warning() function. This also removes function names from the messages unless we embed them explicitly in format strings. Instead, some messages are revised to clarify the context. [arnd@arndb.de: avoid warning about unused variables] Link: http://lkml.kernel.org/r/20160615201945.3348205-1-arnd@arndb.de Link: http://lkml.kernel.org/r/1464875891-5443-6-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Ryusuke Konishi authored
Replace most use of printk() in nilfs2 implementation with nilfs_msg(), and reduce the following checkpatch.pl warning: "WARNING: Prefer [subsystem eg: netdev]_crit([subsystem]dev, ... then dev_crit(dev, ... then pr_crit(... to printk(KERN_CRIT ..." This patch also fixes a minor checkpatch warning "WARNING: quoted string split across lines" that often accompanies the prior warning, and amends message format as needed. Link: http://lkml.kernel.org/r/1464875891-5443-5-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Ryusuke Konishi authored
Insert a back pointer to super block instance in nilfs object so that functions of nilfs2 easily refer to the super block instance. This simplifies replacement of printk() in the successive change. Link: http://lkml.kernel.org/r/1464875891-5443-4-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Ryusuke Konishi authored
Define an own output routine to replace bare use of printk() function. The output routine is implemented with a macro and a helper function, which are named nilfs_msg() and __nilfs_msg(), respectively. __nilfs_msg() formats a message like "NILFS (<device-name>): <message>", prefixing it with a given log level, and terminates the statement with a newline. The "device-name" is optional to make it available in early stages; it will be omitted if a NULL pointer is passed to super block instance argument. nilfs_msg() wraps __nilfs_msg() and is removed if CONFIG_PRINTK is not set. Link: http://lkml.kernel.org/r/1464875891-5443-3-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Ryusuke Konishi authored
Simplify nilfs_error(), an output function used to report critical issues in file system. This renames the original nilfs_error() function to __nilfs_error() and redefines it as a macro to hide its function name argument within the macro. Every call site of nilfs_error() is changed to strip __func__ argument except nilfs_bmap_convert_error(); nilfs_bmap_convert_error() directly calls __nilfs_error() because it inherits caller's function name. Link: http://lkml.kernel.org/r/1464875891-5443-2-git-send-email-konishi.ryusuke@lab.ntt.co.jpSigned-off-by:
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Daniel Wagner authored
Since the -Wincompatible-pointer-types is reported as error, alpha doesn't build anymore. Let's fix it in a minimal way. fs/binfmt_em86.c:73:35: error: passing argument 2 of `copy_strings_kernel' from incompatible pointer type [-Werror=incompatible-pointer-types] retval = copy_strings_kernel(1, &i_arg, bprm); ^ ^ fs/binfmt_em86.c:77:34: error: passing argument 2 of `copy_strings_kernel' from incompatible pointer type [-Werror=incompatible-pointer-types] retval = copy_strings_kernel(1, &i_name, bprm); ^ Link: http://lkml.kernel.org/r/1469525978-23359-1-git-send-email-wagi@monom.orgSigned-off-by:Daniel Wagner <daniel.wagner@bmw-carit.de> Signed-off-by:
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Kees Cook authored
The vm_brk() alignment calculations should refuse to overflow. The ELF loader depending on this, but it has been fixed now. No other unsafe callers have been found. Link: http://lkml.kernel.org/r/1468014494-25291-3-git-send-email-keescook@chromium.orgSigned-off-by:
Kees Cook <keescook@chromium.org> Reported-by:
Hector Marco-Gisbert <hecmargi@upv.es> Cc: Ismael Ripoll Ripoll <iripoll@upv.es> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Chen Gang <gang.chen.5i5j@gmail.com> Cc: Michal Hocko <mhocko@suse.com> Cc: Konstantin Khlebnikov <koct9i@gmail.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by:
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