Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm ppc bugfixes from Marcelo Tosatti.
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: PPC: Book3S HV: Fix instruction emulation
KVM: PPC: Book3S HV: Endian fix for accessing VPA yield count
KVM: PPC: Book3S HV: Fix spinlock/mutex ordering issue in kvmppc_set_lpcr()
diff --git a/MAINTAINERS b/MAINTAINERS
index 358eb01..88c09ca 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1186,7 +1186,7 @@
L: linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
S: Maintained
F: arch/arm/mach-mvebu/
-F: drivers/rtc/armada38x-rtc
+F: drivers/rtc/rtc-armada38x.c
ARM/Marvell Berlin SoC support
M: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
@@ -1675,8 +1675,8 @@
F: include/linux/platform_data/at24.h
ATA OVER ETHERNET (AOE) DRIVER
-M: "Ed L. Cashin" <ecashin@coraid.com>
-W: http://support.coraid.com/support/linux
+M: "Ed L. Cashin" <ed.cashin@acm.org>
+W: http://www.openaoe.org/
S: Supported
F: Documentation/aoe/
F: drivers/block/aoe/
@@ -3252,6 +3252,13 @@
F: Documentation/hwmon/dme1737
F: drivers/hwmon/dme1737.c
+DMI/SMBIOS SUPPORT
+M: Jean Delvare <jdelvare@suse.de>
+S: Maintained
+F: drivers/firmware/dmi-id.c
+F: drivers/firmware/dmi_scan.c
+F: include/linux/dmi.h
+
DOCKING STATION DRIVER
M: Shaohua Li <shaohua.li@intel.com>
L: linux-acpi@vger.kernel.org
diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c
index 114234e..edda76f 100644
--- a/arch/arc/kernel/signal.c
+++ b/arch/arc/kernel/signal.c
@@ -67,7 +67,7 @@
sigset_t *set)
{
int err;
- err = __copy_to_user(&(sf->uc.uc_mcontext.regs), regs,
+ err = __copy_to_user(&(sf->uc.uc_mcontext.regs.scratch), regs,
sizeof(sf->uc.uc_mcontext.regs.scratch));
err |= __copy_to_user(&sf->uc.uc_sigmask, set, sizeof(sigset_t));
@@ -83,7 +83,7 @@
if (!err)
set_current_blocked(&set);
- err |= __copy_from_user(regs, &(sf->uc.uc_mcontext.regs),
+ err |= __copy_from_user(regs, &(sf->uc.uc_mcontext.regs.scratch),
sizeof(sf->uc.uc_mcontext.regs.scratch));
return err;
@@ -131,6 +131,15 @@
/* Don't restart from sigreturn */
syscall_wont_restart(regs);
+ /*
+ * Ensure that sigreturn always returns to user mode (in case the
+ * regs saved on user stack got fudged between save and sigreturn)
+ * Otherwise it is easy to panic the kernel with a custom
+ * signal handler and/or restorer which clobberes the status32/ret
+ * to return to a bogus location in kernel mode.
+ */
+ regs->status32 |= STATUS_U_MASK;
+
return regs->r0;
badframe:
@@ -229,8 +238,11 @@
/*
* handler returns using sigreturn stub provided already by userpsace
+ * If not, nuke the process right away
*/
- BUG_ON(!(ksig->ka.sa.sa_flags & SA_RESTORER));
+ if(!(ksig->ka.sa.sa_flags & SA_RESTORER))
+ return 1;
+
regs->blink = (unsigned long)ksig->ka.sa.sa_restorer;
/* User Stack for signal handler will be above the frame just carved */
@@ -296,12 +308,12 @@
handle_signal(struct ksignal *ksig, struct pt_regs *regs)
{
sigset_t *oldset = sigmask_to_save();
- int ret;
+ int failed;
/* Set up the stack frame */
- ret = setup_rt_frame(ksig, oldset, regs);
+ failed = setup_rt_frame(ksig, oldset, regs);
- signal_setup_done(ret, ksig, 0);
+ signal_setup_done(failed, ksig, 0);
}
void do_signal(struct pt_regs *regs)
diff --git a/arch/metag/include/asm/io.h b/arch/metag/include/asm/io.h
index 9359e50..d5779b0 100644
--- a/arch/metag/include/asm/io.h
+++ b/arch/metag/include/asm/io.h
@@ -2,6 +2,7 @@
#define _ASM_METAG_IO_H
#include <linux/types.h>
+#include <asm/pgtable-bits.h>
#define IO_SPACE_LIMIT 0
diff --git a/arch/metag/include/asm/pgtable-bits.h b/arch/metag/include/asm/pgtable-bits.h
new file mode 100644
index 0000000..25ba672
--- /dev/null
+++ b/arch/metag/include/asm/pgtable-bits.h
@@ -0,0 +1,104 @@
+/*
+ * Meta page table definitions.
+ */
+
+#ifndef _METAG_PGTABLE_BITS_H
+#define _METAG_PGTABLE_BITS_H
+
+#include <asm/metag_mem.h>
+
+/*
+ * Definitions for MMU descriptors
+ *
+ * These are the hardware bits in the MMCU pte entries.
+ * Derived from the Meta toolkit headers.
+ */
+#define _PAGE_PRESENT MMCU_ENTRY_VAL_BIT
+#define _PAGE_WRITE MMCU_ENTRY_WR_BIT
+#define _PAGE_PRIV MMCU_ENTRY_PRIV_BIT
+/* Write combine bit - this can cause writes to occur out of order */
+#define _PAGE_WR_COMBINE MMCU_ENTRY_WRC_BIT
+/* Sys coherent bit - this bit is never used by Linux */
+#define _PAGE_SYS_COHERENT MMCU_ENTRY_SYS_BIT
+#define _PAGE_ALWAYS_ZERO_1 0x020
+#define _PAGE_CACHE_CTRL0 0x040
+#define _PAGE_CACHE_CTRL1 0x080
+#define _PAGE_ALWAYS_ZERO_2 0x100
+#define _PAGE_ALWAYS_ZERO_3 0x200
+#define _PAGE_ALWAYS_ZERO_4 0x400
+#define _PAGE_ALWAYS_ZERO_5 0x800
+
+/* These are software bits that we stuff into the gaps in the hardware
+ * pte entries that are not used. Note, these DO get stored in the actual
+ * hardware, but the hardware just does not use them.
+ */
+#define _PAGE_ACCESSED _PAGE_ALWAYS_ZERO_1
+#define _PAGE_DIRTY _PAGE_ALWAYS_ZERO_2
+
+/* Pages owned, and protected by, the kernel. */
+#define _PAGE_KERNEL _PAGE_PRIV
+
+/* No cacheing of this page */
+#define _PAGE_CACHE_WIN0 (MMCU_CWIN_UNCACHED << MMCU_ENTRY_CWIN_S)
+/* burst cacheing - good for data streaming */
+#define _PAGE_CACHE_WIN1 (MMCU_CWIN_BURST << MMCU_ENTRY_CWIN_S)
+/* One cache way per thread */
+#define _PAGE_CACHE_WIN2 (MMCU_CWIN_C1SET << MMCU_ENTRY_CWIN_S)
+/* Full on cacheing */
+#define _PAGE_CACHE_WIN3 (MMCU_CWIN_CACHED << MMCU_ENTRY_CWIN_S)
+
+#define _PAGE_CACHEABLE (_PAGE_CACHE_WIN3 | _PAGE_WR_COMBINE)
+
+/* which bits are used for cache control ... */
+#define _PAGE_CACHE_MASK (_PAGE_CACHE_CTRL0 | _PAGE_CACHE_CTRL1 | \
+ _PAGE_WR_COMBINE)
+
+/* This is a mask of the bits that pte_modify is allowed to change. */
+#define _PAGE_CHG_MASK (PAGE_MASK)
+
+#define _PAGE_SZ_SHIFT 1
+#define _PAGE_SZ_4K (0x0)
+#define _PAGE_SZ_8K (0x1 << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_16K (0x2 << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_32K (0x3 << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_64K (0x4 << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_128K (0x5 << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_256K (0x6 << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_512K (0x7 << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_1M (0x8 << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_2M (0x9 << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_4M (0xa << _PAGE_SZ_SHIFT)
+#define _PAGE_SZ_MASK (0xf << _PAGE_SZ_SHIFT)
+
+#if defined(CONFIG_PAGE_SIZE_4K)
+#define _PAGE_SZ (_PAGE_SZ_4K)
+#elif defined(CONFIG_PAGE_SIZE_8K)
+#define _PAGE_SZ (_PAGE_SZ_8K)
+#elif defined(CONFIG_PAGE_SIZE_16K)
+#define _PAGE_SZ (_PAGE_SZ_16K)
+#endif
+#define _PAGE_TABLE (_PAGE_SZ | _PAGE_PRESENT)
+
+#if defined(CONFIG_HUGETLB_PAGE_SIZE_8K)
+# define _PAGE_SZHUGE (_PAGE_SZ_8K)
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_16K)
+# define _PAGE_SZHUGE (_PAGE_SZ_16K)
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_32K)
+# define _PAGE_SZHUGE (_PAGE_SZ_32K)
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
+# define _PAGE_SZHUGE (_PAGE_SZ_64K)
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_128K)
+# define _PAGE_SZHUGE (_PAGE_SZ_128K)
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_256K)
+# define _PAGE_SZHUGE (_PAGE_SZ_256K)
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
+# define _PAGE_SZHUGE (_PAGE_SZ_512K)
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_1M)
+# define _PAGE_SZHUGE (_PAGE_SZ_1M)
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_2M)
+# define _PAGE_SZHUGE (_PAGE_SZ_2M)
+#elif defined(CONFIG_HUGETLB_PAGE_SIZE_4M)
+# define _PAGE_SZHUGE (_PAGE_SZ_4M)
+#endif
+
+#endif /* _METAG_PGTABLE_BITS_H */
diff --git a/arch/metag/include/asm/pgtable.h b/arch/metag/include/asm/pgtable.h
index d0604c0..ffa3a3a 100644
--- a/arch/metag/include/asm/pgtable.h
+++ b/arch/metag/include/asm/pgtable.h
@@ -5,6 +5,7 @@
#ifndef _METAG_PGTABLE_H
#define _METAG_PGTABLE_H
+#include <asm/pgtable-bits.h>
#include <asm-generic/pgtable-nopmd.h>
/* Invalid regions on Meta: 0x00000000-0x001FFFFF and 0xFFFF0000-0xFFFFFFFF */
@@ -21,100 +22,6 @@
#endif
/*
- * Definitions for MMU descriptors
- *
- * These are the hardware bits in the MMCU pte entries.
- * Derived from the Meta toolkit headers.
- */
-#define _PAGE_PRESENT MMCU_ENTRY_VAL_BIT
-#define _PAGE_WRITE MMCU_ENTRY_WR_BIT
-#define _PAGE_PRIV MMCU_ENTRY_PRIV_BIT
-/* Write combine bit - this can cause writes to occur out of order */
-#define _PAGE_WR_COMBINE MMCU_ENTRY_WRC_BIT
-/* Sys coherent bit - this bit is never used by Linux */
-#define _PAGE_SYS_COHERENT MMCU_ENTRY_SYS_BIT
-#define _PAGE_ALWAYS_ZERO_1 0x020
-#define _PAGE_CACHE_CTRL0 0x040
-#define _PAGE_CACHE_CTRL1 0x080
-#define _PAGE_ALWAYS_ZERO_2 0x100
-#define _PAGE_ALWAYS_ZERO_3 0x200
-#define _PAGE_ALWAYS_ZERO_4 0x400
-#define _PAGE_ALWAYS_ZERO_5 0x800
-
-/* These are software bits that we stuff into the gaps in the hardware
- * pte entries that are not used. Note, these DO get stored in the actual
- * hardware, but the hardware just does not use them.
- */
-#define _PAGE_ACCESSED _PAGE_ALWAYS_ZERO_1
-#define _PAGE_DIRTY _PAGE_ALWAYS_ZERO_2
-
-/* Pages owned, and protected by, the kernel. */
-#define _PAGE_KERNEL _PAGE_PRIV
-
-/* No cacheing of this page */
-#define _PAGE_CACHE_WIN0 (MMCU_CWIN_UNCACHED << MMCU_ENTRY_CWIN_S)
-/* burst cacheing - good for data streaming */
-#define _PAGE_CACHE_WIN1 (MMCU_CWIN_BURST << MMCU_ENTRY_CWIN_S)
-/* One cache way per thread */
-#define _PAGE_CACHE_WIN2 (MMCU_CWIN_C1SET << MMCU_ENTRY_CWIN_S)
-/* Full on cacheing */
-#define _PAGE_CACHE_WIN3 (MMCU_CWIN_CACHED << MMCU_ENTRY_CWIN_S)
-
-#define _PAGE_CACHEABLE (_PAGE_CACHE_WIN3 | _PAGE_WR_COMBINE)
-
-/* which bits are used for cache control ... */
-#define _PAGE_CACHE_MASK (_PAGE_CACHE_CTRL0 | _PAGE_CACHE_CTRL1 | \
- _PAGE_WR_COMBINE)
-
-/* This is a mask of the bits that pte_modify is allowed to change. */
-#define _PAGE_CHG_MASK (PAGE_MASK)
-
-#define _PAGE_SZ_SHIFT 1
-#define _PAGE_SZ_4K (0x0)
-#define _PAGE_SZ_8K (0x1 << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_16K (0x2 << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_32K (0x3 << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_64K (0x4 << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_128K (0x5 << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_256K (0x6 << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_512K (0x7 << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_1M (0x8 << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_2M (0x9 << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_4M (0xa << _PAGE_SZ_SHIFT)
-#define _PAGE_SZ_MASK (0xf << _PAGE_SZ_SHIFT)
-
-#if defined(CONFIG_PAGE_SIZE_4K)
-#define _PAGE_SZ (_PAGE_SZ_4K)
-#elif defined(CONFIG_PAGE_SIZE_8K)
-#define _PAGE_SZ (_PAGE_SZ_8K)
-#elif defined(CONFIG_PAGE_SIZE_16K)
-#define _PAGE_SZ (_PAGE_SZ_16K)
-#endif
-#define _PAGE_TABLE (_PAGE_SZ | _PAGE_PRESENT)
-
-#if defined(CONFIG_HUGETLB_PAGE_SIZE_8K)
-# define _PAGE_SZHUGE (_PAGE_SZ_8K)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_16K)
-# define _PAGE_SZHUGE (_PAGE_SZ_16K)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_32K)
-# define _PAGE_SZHUGE (_PAGE_SZ_32K)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_64K)
-# define _PAGE_SZHUGE (_PAGE_SZ_64K)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_128K)
-# define _PAGE_SZHUGE (_PAGE_SZ_128K)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_256K)
-# define _PAGE_SZHUGE (_PAGE_SZ_256K)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_512K)
-# define _PAGE_SZHUGE (_PAGE_SZ_512K)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_1M)
-# define _PAGE_SZHUGE (_PAGE_SZ_1M)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_2M)
-# define _PAGE_SZHUGE (_PAGE_SZ_2M)
-#elif defined(CONFIG_HUGETLB_PAGE_SIZE_4M)
-# define _PAGE_SZHUGE (_PAGE_SZ_4M)
-#endif
-
-/*
* The Linux memory management assumes a three-level page table setup. On
* Meta, we use that, but "fold" the mid level into the top-level page
* table.
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index c9df40b..c9c875d 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -211,7 +211,7 @@
extern unsigned long mmap_rnd_mask;
-#define STACK_RND_MASK (mmap_rnd_mask)
+#define STACK_RND_MASK (test_thread_flag(TIF_31BIT) ? 0x7ff : mmap_rnd_mask)
#define ARCH_DLINFO \
do { \
diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c
index 82c1989..6c79f1b 100644
--- a/arch/s390/kernel/ftrace.c
+++ b/arch/s390/kernel/ftrace.c
@@ -57,6 +57,44 @@
unsigned long ftrace_plt;
+static inline void ftrace_generate_orig_insn(struct ftrace_insn *insn)
+{
+#ifdef CC_USING_HOTPATCH
+ /* brcl 0,0 */
+ insn->opc = 0xc004;
+ insn->disp = 0;
+#else
+ /* stg r14,8(r15) */
+ insn->opc = 0xe3e0;
+ insn->disp = 0xf0080024;
+#endif
+}
+
+static inline int is_kprobe_on_ftrace(struct ftrace_insn *insn)
+{
+#ifdef CONFIG_KPROBES
+ if (insn->opc == BREAKPOINT_INSTRUCTION)
+ return 1;
+#endif
+ return 0;
+}
+
+static inline void ftrace_generate_kprobe_nop_insn(struct ftrace_insn *insn)
+{
+#ifdef CONFIG_KPROBES
+ insn->opc = BREAKPOINT_INSTRUCTION;
+ insn->disp = KPROBE_ON_FTRACE_NOP;
+#endif
+}
+
+static inline void ftrace_generate_kprobe_call_insn(struct ftrace_insn *insn)
+{
+#ifdef CONFIG_KPROBES
+ insn->opc = BREAKPOINT_INSTRUCTION;
+ insn->disp = KPROBE_ON_FTRACE_CALL;
+#endif
+}
+
int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
unsigned long addr)
{
@@ -72,16 +110,9 @@
return -EFAULT;
if (addr == MCOUNT_ADDR) {
/* Initial code replacement */
-#ifdef CC_USING_HOTPATCH
- /* We expect to see brcl 0,0 */
- ftrace_generate_nop_insn(&orig);
-#else
- /* We expect to see stg r14,8(r15) */
- orig.opc = 0xe3e0;
- orig.disp = 0xf0080024;
-#endif
+ ftrace_generate_orig_insn(&orig);
ftrace_generate_nop_insn(&new);
- } else if (old.opc == BREAKPOINT_INSTRUCTION) {
+ } else if (is_kprobe_on_ftrace(&old)) {
/*
* If we find a breakpoint instruction, a kprobe has been
* placed at the beginning of the function. We write the
@@ -89,9 +120,8 @@
* bytes of the original instruction so that the kprobes
* handler can execute a nop, if it reaches this breakpoint.
*/
- new.opc = orig.opc = BREAKPOINT_INSTRUCTION;
- orig.disp = KPROBE_ON_FTRACE_CALL;
- new.disp = KPROBE_ON_FTRACE_NOP;
+ ftrace_generate_kprobe_call_insn(&orig);
+ ftrace_generate_kprobe_nop_insn(&new);
} else {
/* Replace ftrace call with a nop. */
ftrace_generate_call_insn(&orig, rec->ip);
@@ -111,7 +141,7 @@
if (probe_kernel_read(&old, (void *) rec->ip, sizeof(old)))
return -EFAULT;
- if (old.opc == BREAKPOINT_INSTRUCTION) {
+ if (is_kprobe_on_ftrace(&old)) {
/*
* If we find a breakpoint instruction, a kprobe has been
* placed at the beginning of the function. We write the
@@ -119,9 +149,8 @@
* bytes of the original instruction so that the kprobes
* handler can execute a brasl if it reaches this breakpoint.
*/
- new.opc = orig.opc = BREAKPOINT_INSTRUCTION;
- orig.disp = KPROBE_ON_FTRACE_NOP;
- new.disp = KPROBE_ON_FTRACE_CALL;
+ ftrace_generate_kprobe_nop_insn(&orig);
+ ftrace_generate_kprobe_call_insn(&new);
} else {
/* Replace nop with an ftrace call. */
ftrace_generate_nop_insn(&orig);
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index c3f8d15..e6a1578 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -1415,7 +1415,7 @@
static struct attribute *cpumsf_pmu_events_attr[] = {
CPUMF_EVENT_PTR(SF, SF_CYCLES_BASIC),
- CPUMF_EVENT_PTR(SF, SF_CYCLES_BASIC_DIAG),
+ NULL,
NULL,
};
@@ -1606,8 +1606,11 @@
return -EINVAL;
}
- if (si.ad)
+ if (si.ad) {
sfb_set_limits(CPUM_SF_MIN_SDB, CPUM_SF_MAX_SDB);
+ cpumsf_pmu_events_attr[1] =
+ CPUMF_EVENT_PTR(SF, SF_CYCLES_BASIC_DIAG);
+ }
sfdbg = debug_register(KMSG_COMPONENT, 2, 1, 80);
if (!sfdbg)
diff --git a/arch/s390/kernel/swsusp_asm64.S b/arch/s390/kernel/swsusp_asm64.S
index 6b09fdf..ca62946 100644
--- a/arch/s390/kernel/swsusp_asm64.S
+++ b/arch/s390/kernel/swsusp_asm64.S
@@ -177,6 +177,17 @@
lhi %r1,1
sigp %r1,%r0,SIGP_SET_ARCHITECTURE
sam64
+#ifdef CONFIG_SMP
+ larl %r1,smp_cpu_mt_shift
+ icm %r1,15,0(%r1)
+ jz smt_done
+ llgfr %r1,%r1
+smt_loop:
+ sigp %r1,%r0,SIGP_SET_MULTI_THREADING
+ brc 8,smt_done /* accepted */
+ brc 2,smt_loop /* busy, try again */
+smt_done:
+#endif
larl %r1,.Lnew_pgm_check_psw
lpswe 0(%r1)
pgm_check_entry:
diff --git a/block/blk-merge.c b/block/blk-merge.c
index fc1ff3b..fd3fee8 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -592,7 +592,7 @@
if (q->queue_flags & (1 << QUEUE_FLAG_SG_GAPS)) {
struct bio_vec *bprev;
- bprev = &rq->biotail->bi_io_vec[bio->bi_vcnt - 1];
+ bprev = &rq->biotail->bi_io_vec[rq->biotail->bi_vcnt - 1];
if (bvec_gap_to_prev(bprev, bio->bi_io_vec[0].bv_offset))
return false;
}
diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index d53a764..be3290c 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -278,9 +278,11 @@
/*
* We're out of tags on this hardware queue, kick any
* pending IO submits before going to sleep waiting for
- * some to complete.
+ * some to complete. Note that hctx can be NULL here for
+ * reserved tag allocation.
*/
- blk_mq_run_hw_queue(hctx, false);
+ if (hctx)
+ blk_mq_run_hw_queue(hctx, false);
/*
* Retry tag allocation after running the hardware queue,
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 4f4bea2..b7b8933 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -1938,7 +1938,7 @@
*/
if (percpu_ref_init(&q->mq_usage_counter, blk_mq_usage_counter_release,
PERCPU_REF_INIT_ATOMIC, GFP_KERNEL))
- goto err_map;
+ goto err_mq_usage;
setup_timer(&q->timeout, blk_mq_rq_timer, (unsigned long) q);
blk_queue_rq_timeout(q, 30000);
@@ -1981,7 +1981,7 @@
blk_mq_init_cpu_queues(q, set->nr_hw_queues);
if (blk_mq_init_hw_queues(q, set))
- goto err_hw;
+ goto err_mq_usage;
mutex_lock(&all_q_mutex);
list_add_tail(&q->all_q_node, &all_q_list);
@@ -1993,7 +1993,7 @@
return q;
-err_hw:
+err_mq_usage:
blk_cleanup_queue(q);
err_hctxs:
kfree(map);
diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
index 4bc2a5c..a98c41f 100644
--- a/drivers/block/nbd.c
+++ b/drivers/block/nbd.c
@@ -803,10 +803,6 @@
return -EINVAL;
}
- nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
- if (!nbd_dev)
- return -ENOMEM;
-
part_shift = 0;
if (max_part > 0) {
part_shift = fls(max_part);
@@ -828,6 +824,10 @@
if (nbds_max > 1UL << (MINORBITS - part_shift))
return -EINVAL;
+ nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);
+ if (!nbd_dev)
+ return -ENOMEM;
+
for (i = 0; i < nbds_max; i++) {
struct gendisk *disk = alloc_disk(1 << part_shift);
if (!disk)
diff --git a/drivers/block/nvme-core.c b/drivers/block/nvme-core.c
index ceb32dd..e23be20 100644
--- a/drivers/block/nvme-core.c
+++ b/drivers/block/nvme-core.c
@@ -3003,6 +3003,7 @@
}
get_device(dev->device);
+ INIT_LIST_HEAD(&dev->node);
INIT_WORK(&dev->probe_work, nvme_async_probe);
schedule_work(&dev->probe_work);
return 0;
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index f6d04c7..679b10e 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -525,17 +525,6 @@
}
EXPORT_SYMBOL(drm_framebuffer_reference);
-static void drm_framebuffer_free_bug(struct kref *kref)
-{
- BUG();
-}
-
-static void __drm_framebuffer_unreference(struct drm_framebuffer *fb)
-{
- DRM_DEBUG("%p: FB ID: %d (%d)\n", fb, fb->base.id, atomic_read(&fb->refcount.refcount));
- kref_put(&fb->refcount, drm_framebuffer_free_bug);
-}
-
/**
* drm_framebuffer_unregister_private - unregister a private fb from the lookup idr
* @fb: fb to unregister
@@ -1320,7 +1309,7 @@
return;
}
/* disconnect the plane from the fb and crtc: */
- __drm_framebuffer_unreference(plane->old_fb);
+ drm_framebuffer_unreference(plane->old_fb);
plane->old_fb = NULL;
plane->fb = NULL;
plane->crtc = NULL;
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 5b20586..27ea6bd 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -2737,24 +2737,11 @@
WARN_ON(i915_verify_lists(ring->dev));
- /* Move any buffers on the active list that are no longer referenced
- * by the ringbuffer to the flushing/inactive lists as appropriate,
- * before we free the context associated with the requests.
+ /* Retire requests first as we use it above for the early return.
+ * If we retire requests last, we may use a later seqno and so clear
+ * the requests lists without clearing the active list, leading to
+ * confusion.
*/
- while (!list_empty(&ring->active_list)) {
- struct drm_i915_gem_object *obj;
-
- obj = list_first_entry(&ring->active_list,
- struct drm_i915_gem_object,
- ring_list);
-
- if (!i915_gem_request_completed(obj->last_read_req, true))
- break;
-
- i915_gem_object_move_to_inactive(obj);
- }
-
-
while (!list_empty(&ring->request_list)) {
struct drm_i915_gem_request *request;
struct intel_ringbuffer *ringbuf;
@@ -2789,6 +2776,23 @@
i915_gem_free_request(request);
}
+ /* Move any buffers on the active list that are no longer referenced
+ * by the ringbuffer to the flushing/inactive lists as appropriate,
+ * before we free the context associated with the requests.
+ */
+ while (!list_empty(&ring->active_list)) {
+ struct drm_i915_gem_object *obj;
+
+ obj = list_first_entry(&ring->active_list,
+ struct drm_i915_gem_object,
+ ring_list);
+
+ if (!i915_gem_request_completed(obj->last_read_req, true))
+ break;
+
+ i915_gem_object_move_to_inactive(obj);
+ }
+
if (unlikely(ring->trace_irq_req &&
i915_gem_request_completed(ring->trace_irq_req, true))) {
ring->irq_put(ring);
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 6d22128..f75173c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2438,8 +2438,15 @@
if (!intel_crtc->base.primary->fb)
return;
- if (intel_alloc_plane_obj(intel_crtc, plane_config))
+ if (intel_alloc_plane_obj(intel_crtc, plane_config)) {
+ struct drm_plane *primary = intel_crtc->base.primary;
+
+ primary->state->crtc = &intel_crtc->base;
+ primary->crtc = &intel_crtc->base;
+ update_state_fb(primary);
+
return;
+ }
kfree(intel_crtc->base.primary->fb);
intel_crtc->base.primary->fb = NULL;
@@ -2462,11 +2469,15 @@
continue;
if (i915_gem_obj_ggtt_offset(obj) == plane_config->base) {
+ struct drm_plane *primary = intel_crtc->base.primary;
+
if (obj->tiling_mode != I915_TILING_NONE)
dev_priv->preserve_bios_swizzle = true;
drm_framebuffer_reference(c->primary->fb);
- intel_crtc->base.primary->fb = c->primary->fb;
+ primary->fb = c->primary->fb;
+ primary->state->crtc = &intel_crtc->base;
+ primary->crtc = &intel_crtc->base;
obj->frontbuffer_bits |= INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe);
break;
}
@@ -6663,7 +6674,6 @@
plane_config->size);
crtc->base.primary->fb = fb;
- update_state_fb(crtc->base.primary);
}
static void chv_crtc_clock_get(struct intel_crtc *crtc,
@@ -7704,7 +7714,6 @@
plane_config->size);
crtc->base.primary->fb = fb;
- update_state_fb(crtc->base.primary);
return;
error:
@@ -7798,7 +7807,6 @@
plane_config->size);
crtc->base.primary->fb = fb;
- update_state_fb(crtc->base.primary);
}
static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index 9b641b3..8001fe9 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -433,7 +433,6 @@
dm_get(md);
atomic_inc(&md->open_count);
-
out:
spin_unlock(&_minor_lock);
@@ -442,16 +441,20 @@
static void dm_blk_close(struct gendisk *disk, fmode_t mode)
{
- struct mapped_device *md = disk->private_data;
+ struct mapped_device *md;
spin_lock(&_minor_lock);
+ md = disk->private_data;
+ if (WARN_ON(!md))
+ goto out;
+
if (atomic_dec_and_test(&md->open_count) &&
(test_bit(DMF_DEFERRED_REMOVE, &md->flags)))
queue_work(deferred_remove_workqueue, &deferred_remove_work);
dm_put(md);
-
+out:
spin_unlock(&_minor_lock);
}
@@ -2241,7 +2244,6 @@
int minor = MINOR(disk_devt(md->disk));
unlock_fs(md);
- bdput(md->bdev);
destroy_workqueue(md->wq);
if (md->kworker_task)
@@ -2252,19 +2254,22 @@
mempool_destroy(md->rq_pool);
if (md->bs)
bioset_free(md->bs);
- blk_integrity_unregister(md->disk);
- del_gendisk(md->disk);
+
cleanup_srcu_struct(&md->io_barrier);
free_table_devices(&md->table_devices);
- free_minor(minor);
+ dm_stats_cleanup(&md->stats);
spin_lock(&_minor_lock);
md->disk->private_data = NULL;
spin_unlock(&_minor_lock);
-
+ if (blk_get_integrity(md->disk))
+ blk_integrity_unregister(md->disk);
+ del_gendisk(md->disk);
put_disk(md->disk);
blk_cleanup_queue(md->queue);
- dm_stats_cleanup(&md->stats);
+ bdput(md->bdev);
+ free_minor(minor);
+
module_put(THIS_MODULE);
kfree(md);
}
@@ -2642,8 +2647,9 @@
might_sleep();
- spin_lock(&_minor_lock);
map = dm_get_live_table(md, &srcu_idx);
+
+ spin_lock(&_minor_lock);
idr_replace(&_minor_idr, MINOR_ALLOCED, MINOR(disk_devt(dm_disk(md))));
set_bit(DMF_FREEING, &md->flags);
spin_unlock(&_minor_lock);
diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index e2436d1..3a6fd3a 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -413,8 +413,8 @@
mrst->dev = NULL;
}
-#ifdef CONFIG_PM
-static int mrst_suspend(struct device *dev, pm_message_t mesg)
+#ifdef CONFIG_PM_SLEEP
+static int mrst_suspend(struct device *dev)
{
struct mrst_rtc *mrst = dev_get_drvdata(dev);
unsigned char tmp;
@@ -453,7 +453,7 @@
*/
static inline int mrst_poweroff(struct device *dev)
{
- return mrst_suspend(dev, PMSG_HIBERNATE);
+ return mrst_suspend(dev);
}
static int mrst_resume(struct device *dev)
@@ -490,9 +490,11 @@
return 0;
}
+static SIMPLE_DEV_PM_OPS(mrst_pm_ops, mrst_suspend, mrst_resume);
+#define MRST_PM_OPS (&mrst_pm_ops)
+
#else
-#define mrst_suspend NULL
-#define mrst_resume NULL
+#define MRST_PM_OPS NULL
static inline int mrst_poweroff(struct device *dev)
{
@@ -529,9 +531,8 @@
.remove = vrtc_mrst_platform_remove,
.shutdown = vrtc_mrst_platform_shutdown,
.driver = {
- .name = (char *) driver_name,
- .suspend = mrst_suspend,
- .resume = mrst_resume,
+ .name = driver_name,
+ .pm = MRST_PM_OPS,
}
};
diff --git a/drivers/watchdog/imgpdc_wdt.c b/drivers/watchdog/imgpdc_wdt.c
index c8def68..0deaa4f 100644
--- a/drivers/watchdog/imgpdc_wdt.c
+++ b/drivers/watchdog/imgpdc_wdt.c
@@ -42,10 +42,10 @@
#define PDC_WDT_MIN_TIMEOUT 1
#define PDC_WDT_DEF_TIMEOUT 64
-static int heartbeat;
+static int heartbeat = PDC_WDT_DEF_TIMEOUT;
module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeats in seconds. "
- "(default = " __MODULE_STRING(PDC_WDT_DEF_TIMEOUT) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeats in seconds "
+ "(default=" __MODULE_STRING(PDC_WDT_DEF_TIMEOUT) ")");
static bool nowayout = WATCHDOG_NOWAYOUT;
module_param(nowayout, bool, 0);
@@ -191,6 +191,7 @@
pdc_wdt->wdt_dev.ops = &pdc_wdt_ops;
pdc_wdt->wdt_dev.max_timeout = 1 << PDC_WDT_CONFIG_DELAY_MASK;
pdc_wdt->wdt_dev.parent = &pdev->dev;
+ watchdog_set_drvdata(&pdc_wdt->wdt_dev, pdc_wdt);
ret = watchdog_init_timeout(&pdc_wdt->wdt_dev, heartbeat, &pdev->dev);
if (ret < 0) {
@@ -232,7 +233,6 @@
watchdog_set_nowayout(&pdc_wdt->wdt_dev, nowayout);
platform_set_drvdata(pdev, pdc_wdt);
- watchdog_set_drvdata(&pdc_wdt->wdt_dev, pdc_wdt);
ret = watchdog_register_device(&pdc_wdt->wdt_dev);
if (ret)
diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
index a87f6df..938b987 100644
--- a/drivers/watchdog/mtk_wdt.c
+++ b/drivers/watchdog/mtk_wdt.c
@@ -133,7 +133,7 @@
u32 reg;
struct mtk_wdt_dev *mtk_wdt = watchdog_get_drvdata(wdt_dev);
void __iomem *wdt_base = mtk_wdt->wdt_base;
- u32 ret;
+ int ret;
ret = mtk_wdt_set_timeout(wdt_dev, wdt_dev->timeout);
if (ret < 0)
diff --git a/fs/affs/file.c b/fs/affs/file.c
index d2468bf..a91795e 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -699,8 +699,10 @@
boff = tmp % bsize;
if (boff) {
bh = affs_bread_ino(inode, bidx, 0);
- if (IS_ERR(bh))
- return PTR_ERR(bh);
+ if (IS_ERR(bh)) {
+ written = PTR_ERR(bh);
+ goto err_first_bh;
+ }
tmp = min(bsize - boff, to - from);
BUG_ON(boff + tmp > bsize || tmp > bsize);
memcpy(AFFS_DATA(bh) + boff, data + from, tmp);
@@ -712,14 +714,16 @@
bidx++;
} else if (bidx) {
bh = affs_bread_ino(inode, bidx - 1, 0);
- if (IS_ERR(bh))
- return PTR_ERR(bh);
+ if (IS_ERR(bh)) {
+ written = PTR_ERR(bh);
+ goto err_first_bh;
+ }
}
while (from + bsize <= to) {
prev_bh = bh;
bh = affs_getemptyblk_ino(inode, bidx);
if (IS_ERR(bh))
- goto out;
+ goto err_bh;
memcpy(AFFS_DATA(bh), data + from, bsize);
if (buffer_new(bh)) {
AFFS_DATA_HEAD(bh)->ptype = cpu_to_be32(T_DATA);
@@ -751,7 +755,7 @@
prev_bh = bh;
bh = affs_bread_ino(inode, bidx, 1);
if (IS_ERR(bh))
- goto out;
+ goto err_bh;
tmp = min(bsize, to - from);
BUG_ON(tmp > bsize);
memcpy(AFFS_DATA(bh), data + from, tmp);
@@ -790,12 +794,13 @@
if (tmp > inode->i_size)
inode->i_size = AFFS_I(inode)->mmu_private = tmp;
+err_first_bh:
unlock_page(page);
page_cache_release(page);
return written;
-out:
+err_bh:
bh = prev_bh;
if (!written)
written = PTR_ERR(bh);
diff --git a/fs/hfsplus/brec.c b/fs/hfsplus/brec.c
index 6e560d5..754fdf8 100644
--- a/fs/hfsplus/brec.c
+++ b/fs/hfsplus/brec.c
@@ -131,13 +131,16 @@
hfs_bnode_write(node, entry, data_off + key_len, entry_len);
hfs_bnode_dump(node);
- if (new_node) {
- /* update parent key if we inserted a key
- * at the start of the first node
- */
- if (!rec && new_node != node)
- hfs_brec_update_parent(fd);
+ /*
+ * update parent key if we inserted a key
+ * at the start of the node and it is not the new node
+ */
+ if (!rec && new_node != node) {
+ hfs_bnode_read_key(node, fd->search_key, data_off + size);
+ hfs_brec_update_parent(fd);
+ }
+ if (new_node) {
hfs_bnode_put(fd->bnode);
if (!new_node->parent) {
hfs_btree_inc_height(tree);
@@ -168,9 +171,6 @@
goto again;
}
- if (!rec)
- hfs_brec_update_parent(fd);
-
return 0;
}
@@ -370,6 +370,8 @@
if (IS_ERR(parent))
return PTR_ERR(parent);
__hfs_brec_find(parent, fd, hfs_find_rec_by_key);
+ if (fd->record < 0)
+ return -ENOENT;
hfs_bnode_dump(parent);
rec = fd->record;
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 6d77432..a419b65 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1625,11 +1625,11 @@
/*
* numa_faults_locality tracks if faults recorded during the last
- * scan window were remote/local. The task scan period is adapted
- * based on the locality of the faults with different weights
- * depending on whether they were shared or private faults
+ * scan window were remote/local or failed to migrate. The task scan
+ * period is adapted based on the locality of the faults with different
+ * weights depending on whether they were shared or private faults
*/
- unsigned long numa_faults_locality[2];
+ unsigned long numa_faults_locality[3];
unsigned long numa_pages_migrated;
#endif /* CONFIG_NUMA_BALANCING */
@@ -1719,6 +1719,7 @@
#define TNF_NO_GROUP 0x02
#define TNF_SHARED 0x04
#define TNF_FAULT_LOCAL 0x08
+#define TNF_MIGRATE_FAIL 0x10
#ifdef CONFIG_NUMA_BALANCING
extern void task_numa_fault(int last_node, int node, int pages, int flags);
diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 7ce18f3..bcfe320 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1609,9 +1609,11 @@
/*
* If there were no record hinting faults then either the task is
* completely idle or all activity is areas that are not of interest
- * to automatic numa balancing. Scan slower
+ * to automatic numa balancing. Related to that, if there were failed
+ * migration then it implies we are migrating too quickly or the local
+ * node is overloaded. In either case, scan slower
*/
- if (local + shared == 0) {
+ if (local + shared == 0 || p->numa_faults_locality[2]) {
p->numa_scan_period = min(p->numa_scan_period_max,
p->numa_scan_period << 1);
@@ -2080,6 +2082,8 @@
if (migrated)
p->numa_pages_migrated += pages;
+ if (flags & TNF_MIGRATE_FAIL)
+ p->numa_faults_locality[2] += pages;
p->numa_faults[task_faults_idx(NUMA_MEMBUF, mem_node, priv)] += pages;
p->numa_faults[task_faults_idx(NUMA_CPUBUF, cpu_node, priv)] += pages;
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 626e93d..6817b03 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1260,6 +1260,7 @@
int target_nid, last_cpupid = -1;
bool page_locked;
bool migrated = false;
+ bool was_writable;
int flags = 0;
/* A PROT_NONE fault should not end up here */
@@ -1291,17 +1292,8 @@
flags |= TNF_FAULT_LOCAL;
}
- /*
- * Avoid grouping on DSO/COW pages in specific and RO pages
- * in general, RO pages shouldn't hurt as much anyway since
- * they can be in shared cache state.
- *
- * FIXME! This checks "pmd_dirty()" as an approximation of
- * "is this a read-only page", since checking "pmd_write()"
- * is even more broken. We haven't actually turned this into
- * a writable page, so pmd_write() will always be false.
- */
- if (!pmd_dirty(pmd))
+ /* See similar comment in do_numa_page for explanation */
+ if (!(vma->vm_flags & VM_WRITE))
flags |= TNF_NO_GROUP;
/*
@@ -1358,12 +1350,17 @@
if (migrated) {
flags |= TNF_MIGRATED;
page_nid = target_nid;
- }
+ } else
+ flags |= TNF_MIGRATE_FAIL;
goto out;
clear_pmdnuma:
BUG_ON(!PageLocked(page));
+ was_writable = pmd_write(pmd);
pmd = pmd_modify(pmd, vma->vm_page_prot);
+ pmd = pmd_mkyoung(pmd);
+ if (was_writable)
+ pmd = pmd_mkwrite(pmd);
set_pmd_at(mm, haddr, pmdp, pmd);
update_mmu_cache_pmd(vma, addr, pmdp);
unlock_page(page);
@@ -1487,6 +1484,7 @@
if (__pmd_trans_huge_lock(pmd, vma, &ptl) == 1) {
pmd_t entry;
+ bool preserve_write = prot_numa && pmd_write(*pmd);
ret = 1;
/*
@@ -1502,9 +1500,11 @@
if (!prot_numa || !pmd_protnone(*pmd)) {
entry = pmdp_get_and_clear_notify(mm, addr, pmd);
entry = pmd_modify(entry, newprot);
+ if (preserve_write)
+ entry = pmd_mkwrite(entry);
ret = HPAGE_PMD_NR;
set_pmd_at(mm, addr, pmd, entry);
- BUG_ON(pmd_write(entry));
+ BUG_ON(!preserve_write && pmd_write(entry));
}
spin_unlock(ptl);
}
diff --git a/mm/memory.c b/mm/memory.c
index 411144f..97839f5 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3035,6 +3035,7 @@
int last_cpupid;
int target_nid;
bool migrated = false;
+ bool was_writable = pte_write(pte);
int flags = 0;
/* A PROT_NONE fault should not end up here */
@@ -3059,6 +3060,8 @@
/* Make it present again */
pte = pte_modify(pte, vma->vm_page_prot);
pte = pte_mkyoung(pte);
+ if (was_writable)
+ pte = pte_mkwrite(pte);
set_pte_at(mm, addr, ptep, pte);
update_mmu_cache(vma, addr, ptep);
@@ -3069,16 +3072,14 @@
}
/*
- * Avoid grouping on DSO/COW pages in specific and RO pages
- * in general, RO pages shouldn't hurt as much anyway since
- * they can be in shared cache state.
- *
- * FIXME! This checks "pmd_dirty()" as an approximation of
- * "is this a read-only page", since checking "pmd_write()"
- * is even more broken. We haven't actually turned this into
- * a writable page, so pmd_write() will always be false.
+ * Avoid grouping on RO pages in general. RO pages shouldn't hurt as
+ * much anyway since they can be in shared cache state. This misses
+ * the case where a mapping is writable but the process never writes
+ * to it but pte_write gets cleared during protection updates and
+ * pte_dirty has unpredictable behaviour between PTE scan updates,
+ * background writeback, dirty balancing and application behaviour.
*/
- if (!pte_dirty(pte))
+ if (!(vma->vm_flags & VM_WRITE))
flags |= TNF_NO_GROUP;
/*
@@ -3102,7 +3103,8 @@
if (migrated) {
page_nid = target_nid;
flags |= TNF_MIGRATED;
- }
+ } else
+ flags |= TNF_MIGRATE_FAIL;
out:
if (page_nid != -1)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 9fab107..65842d6 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1092,6 +1092,10 @@
return NULL;
arch_refresh_nodedata(nid, pgdat);
+ } else {
+ /* Reset the nr_zones and classzone_idx to 0 before reuse */
+ pgdat->nr_zones = 0;
+ pgdat->classzone_idx = 0;
}
/* we can use NODE_DATA(nid) from here */
@@ -1977,15 +1981,6 @@
if (is_vmalloc_addr(zone->wait_table))
vfree(zone->wait_table);
}
-
- /*
- * Since there is no way to guarentee the address of pgdat/zone is not
- * on stack of any kernel threads or used by other kernel objects
- * without reference counting or other symchronizing method, do not
- * reset node_data and free pgdat here. Just reset it to 0 and reuse
- * the memory when the node is online again.
- */
- memset(pgdat, 0, sizeof(*pgdat));
}
EXPORT_SYMBOL(try_offline_node);
diff --git a/mm/mmap.c b/mm/mmap.c
index da9990a..9ec50a3 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -774,10 +774,8 @@
importer->anon_vma = exporter->anon_vma;
error = anon_vma_clone(importer, exporter);
- if (error) {
- importer->anon_vma = NULL;
+ if (error)
return error;
- }
}
}
diff --git a/mm/mprotect.c b/mm/mprotect.c
index 4472781..8858483 100644
--- a/mm/mprotect.c
+++ b/mm/mprotect.c
@@ -75,6 +75,7 @@
oldpte = *pte;
if (pte_present(oldpte)) {
pte_t ptent;
+ bool preserve_write = prot_numa && pte_write(oldpte);
/*
* Avoid trapping faults against the zero or KSM
@@ -94,6 +95,8 @@
ptent = ptep_modify_prot_start(mm, addr, pte);
ptent = pte_modify(ptent, newprot);
+ if (preserve_write)
+ ptent = pte_mkwrite(ptent);
/* Avoid taking write faults for known dirty pages */
if (dirty_accountable && pte_dirty(ptent) &&
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 45e187b..644bcb6 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -857,8 +857,11 @@
* bw * elapsed + write_bandwidth * (period - elapsed)
* write_bandwidth = ---------------------------------------------------
* period
+ *
+ * @written may have decreased due to account_page_redirty().
+ * Avoid underflowing @bw calculation.
*/
- bw = written - bdi->written_stamp;
+ bw = written - min(written, bdi->written_stamp);
bw *= HZ;
if (unlikely(elapsed > period)) {
do_div(bw, elapsed);
@@ -922,7 +925,7 @@
unsigned long now)
{
static DEFINE_SPINLOCK(dirty_lock);
- static unsigned long update_time;
+ static unsigned long update_time = INITIAL_JIFFIES;
/*
* check locklessly first to optimize away locking for the most time
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index 72f5ac3..755a42c 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -103,6 +103,7 @@
if (!is_migrate_isolate_page(buddy)) {
__isolate_free_page(page, order);
+ kernel_map_pages(page, (1 << order), 1);
set_page_refcounted(page);
isolated_page = page;
}
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index 75c1f28..29f2f8b 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -265,8 +265,15 @@
vma = vma->vm_next;
err = walk_page_test(start, next, walk);
- if (err > 0)
+ if (err > 0) {
+ /*
+ * positive return values are purely for
+ * controlling the pagewalk, so should never
+ * be passed to the callers.
+ */
+ err = 0;
continue;
+ }
if (err < 0)
break;
}
diff --git a/mm/rmap.c b/mm/rmap.c
index 5e3e090..c161a14 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -287,6 +287,13 @@
return 0;
enomem_failure:
+ /*
+ * dst->anon_vma is dropped here otherwise its degree can be incorrectly
+ * decremented in unlink_anon_vmas().
+ * We can safely do this because callers of anon_vma_clone() don't care
+ * about dst->anon_vma if anon_vma_clone() failed.
+ */
+ dst->anon_vma = NULL;
unlink_anon_vmas(dst);
return -ENOMEM;
}
diff --git a/mm/slub.c b/mm/slub.c
index 6832c4e..82c4737 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -2449,7 +2449,8 @@
do {
tid = this_cpu_read(s->cpu_slab->tid);
c = raw_cpu_ptr(s->cpu_slab);
- } while (IS_ENABLED(CONFIG_PREEMPT) && unlikely(tid != c->tid));
+ } while (IS_ENABLED(CONFIG_PREEMPT) &&
+ unlikely(tid != READ_ONCE(c->tid)));
/*
* Irqless object alloc/free algorithm used here depends on sequence
@@ -2718,7 +2719,8 @@
do {
tid = this_cpu_read(s->cpu_slab->tid);
c = raw_cpu_ptr(s->cpu_slab);
- } while (IS_ENABLED(CONFIG_PREEMPT) && unlikely(tid != c->tid));
+ } while (IS_ENABLED(CONFIG_PREEMPT) &&
+ unlikely(tid != READ_ONCE(c->tid)));
/* Same with comment on barrier() in slab_alloc_node() */
barrier();
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 1684bcc..5fde343 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -152,7 +152,7 @@
goto out;
/* No partial writes. */
- length = EINVAL;
+ length = -EINVAL;
if (*ppos != 0)
goto out;
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 4ca3d5d..a8a1e14 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1989,7 +1989,7 @@
.driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
/* Sunrise Point */
{ PCI_DEVICE(0x8086, 0xa170),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
/* Sunrise Point-LP */
{ PCI_DEVICE(0x8086, 0x9d70),
.driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_SKYLAKE },
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 526398a..7438213 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -396,7 +396,7 @@
{
/* We currently only handle front, HP */
static hda_nid_t pins[] = {
- 0x0f, 0x10, 0x14, 0x15, 0
+ 0x0f, 0x10, 0x14, 0x15, 0x17, 0
};
hda_nid_t *p;
for (p = pins; *p; p++)
@@ -5036,6 +5036,7 @@
SND_PCI_QUIRK(0x17aa, 0x501a, "Thinkpad", ALC283_FIXUP_INT_MIC),
SND_PCI_QUIRK(0x17aa, 0x501e, "Thinkpad L440", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x5026, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
+ SND_PCI_QUIRK(0x17aa, 0x5036, "Thinkpad T450s", ALC292_FIXUP_TPT440_DOCK),
SND_PCI_QUIRK(0x17aa, 0x5109, "Thinkpad", ALC269_FIXUP_LIMIT_INT_MIC_BOOST),
SND_PCI_QUIRK(0x17aa, 0x3bf8, "Quanta FL1", ALC269_FIXUP_PCM_44K),
SND_PCI_QUIRK(0x17aa, 0x9e54, "LENOVO NB", ALC269_FIXUP_LENOVO_EAPD),
diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index 4e51122..0db5713 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -22,6 +22,14 @@
TARGETS_HOTPLUG = cpu-hotplug
TARGETS_HOTPLUG += memory-hotplug
+# Clear LDFLAGS and MAKEFLAGS if called from main
+# Makefile to avoid test build failures when test
+# Makefile doesn't have explicit build rules.
+ifeq (1,$(MAKELEVEL))
+undefine LDFLAGS
+override MAKEFLAGS =
+endif
+
all:
for TARGET in $(TARGETS); do \
make -C $$TARGET; \
