diff --git a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl index 00e425faa2fd..78c9a7b2b58f 100644 --- a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl +++ b/Documentation/trace/postprocess/trace-vmscan-postprocess.pl @@ -47,7 +47,6 @@ use constant HIGH_KSWAPD_REWAKEUP => 21; use constant HIGH_NR_SCANNED => 22; use constant HIGH_NR_TAKEN => 23; use constant HIGH_NR_RECLAIMED => 24; -use constant HIGH_NR_CONTIG_DIRTY => 25; my %perprocesspid; my %perprocess; @@ -105,7 +104,7 @@ my $regex_direct_end_default = 'nr_reclaimed=([0-9]*)'; my $regex_kswapd_wake_default = 'nid=([0-9]*) order=([0-9]*)'; my $regex_kswapd_sleep_default = 'nid=([0-9]*)'; my $regex_wakeup_kswapd_default = 'nid=([0-9]*) zid=([0-9]*) order=([0-9]*)'; -my $regex_lru_isolate_default = 'isolate_mode=([0-9]*) order=([0-9]*) nr_requested=([0-9]*) nr_scanned=([0-9]*) nr_taken=([0-9]*) contig_taken=([0-9]*) contig_dirty=([0-9]*) contig_failed=([0-9]*)'; +my $regex_lru_isolate_default = 'isolate_mode=([0-9]*) order=([0-9]*) nr_requested=([0-9]*) nr_scanned=([0-9]*) nr_taken=([0-9]*) file=([0-9]*)'; my $regex_lru_shrink_inactive_default = 'nid=([0-9]*) zid=([0-9]*) nr_scanned=([0-9]*) nr_reclaimed=([0-9]*) priority=([0-9]*) flags=([A-Z_|]*)'; my $regex_lru_shrink_active_default = 'lru=([A-Z_]*) nr_scanned=([0-9]*) nr_rotated=([0-9]*) priority=([0-9]*)'; my $regex_writepage_default = 'page=([0-9a-f]*) pfn=([0-9]*) flags=([A-Z_|]*)'; @@ -200,7 +199,7 @@ $regex_lru_isolate = generate_traceevent_regex( $regex_lru_isolate_default, "isolate_mode", "order", "nr_requested", "nr_scanned", "nr_taken", - "contig_taken", "contig_dirty", "contig_failed"); + "file"); $regex_lru_shrink_inactive = generate_traceevent_regex( "vmscan/mm_vmscan_lru_shrink_inactive", $regex_lru_shrink_inactive_default, @@ -375,7 +374,6 @@ EVENT_PROCESS: } my $isolate_mode = $1; my $nr_scanned = $4; - my $nr_contig_dirty = $7; # To closer match vmstat scanning statistics, only count isolate_both # and isolate_inactive as scanning. isolate_active is rotation @@ -385,7 +383,6 @@ EVENT_PROCESS: if ($isolate_mode != 2) { $perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned; } - $perprocesspid{$process_pid}->{HIGH_NR_CONTIG_DIRTY} += $nr_contig_dirty; } elsif ($tracepoint eq "mm_vmscan_lru_shrink_inactive") { $details = $6; if ($details !~ /$regex_lru_shrink_inactive/o) { @@ -539,13 +536,6 @@ sub dump_stats { } } } - if ($stats{$process_pid}->{HIGH_NR_CONTIG_DIRTY}) { - print " "; - my $count = $stats{$process_pid}->{HIGH_NR_CONTIG_DIRTY}; - if ($count != 0) { - print "contig-dirty=$count "; - } - } print "\n"; } diff --git a/drivers/block/zram/zram_drv.c b/drivers/block/zram/zram_drv.c index 48eccb350180..089e72cd37be 100644 --- a/drivers/block/zram/zram_drv.c +++ b/drivers/block/zram/zram_drv.c @@ -622,8 +622,10 @@ static void zram_reset_device(struct zram *zram, bool reset_capacity) memset(&zram->stats, 0, sizeof(zram->stats)); zram->disksize = 0; - if (reset_capacity) + if (reset_capacity) { set_capacity(zram->disk, 0); + revalidate_disk(zram->disk); + } up_write(&zram->init_lock); } @@ -664,6 +666,7 @@ static ssize_t disksize_store(struct device *dev, zram->comp = comp; zram->disksize = disksize; set_capacity(zram->disk, zram->disksize >> SECTOR_SHIFT); + revalidate_disk(zram->disk); up_write(&zram->init_lock); return len; diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c index d7bd395ab586..1c55388ae633 100644 --- a/fs/autofs4/inode.c +++ b/fs/autofs4/inode.c @@ -210,7 +210,7 @@ int autofs4_fill_super(struct super_block *s, void *data, int silent) int pipefd; struct autofs_sb_info *sbi; struct autofs_info *ino; - int pgrp; + int pgrp = 0; bool pgrp_set = false; int ret = -EINVAL; diff --git a/fs/proc/stat.c b/fs/proc/stat.c index 9d231e9e5f0e..bf2d03f8fd3e 100644 --- a/fs/proc/stat.c +++ b/fs/proc/stat.c @@ -184,29 +184,11 @@ static int show_stat(struct seq_file *p, void *v) static int stat_open(struct inode *inode, struct file *file) { - size_t size = 1024 + 128 * num_possible_cpus(); - char *buf; - struct seq_file *m; - int res; + size_t size = 1024 + 128 * num_online_cpus(); /* minimum size to display an interrupt count : 2 bytes */ size += 2 * nr_irqs; - - /* don't ask for more than the kmalloc() max size */ - if (size > KMALLOC_MAX_SIZE) - size = KMALLOC_MAX_SIZE; - buf = kmalloc(size, GFP_KERNEL); - if (!buf) - return -ENOMEM; - - res = single_open(file, show_stat, NULL); - if (!res) { - m = file->private_data; - m->buf = buf; - m->size = ksize(buf); - } else - kfree(buf); - return res; + return single_open_size(file, show_stat, NULL, size); } static const struct file_operations proc_stat_operations = { diff --git a/fs/seq_file.c b/fs/seq_file.c index 1d641bb108d2..3857b720cb1b 100644 --- a/fs/seq_file.c +++ b/fs/seq_file.c @@ -8,8 +8,10 @@ #include #include #include +#include #include #include +#include #include #include @@ -30,6 +32,16 @@ static void seq_set_overflow(struct seq_file *m) m->count = m->size; } +static void *seq_buf_alloc(unsigned long size) +{ + void *buf; + + buf = kmalloc(size, GFP_KERNEL | __GFP_NOWARN); + if (!buf && size > PAGE_SIZE) + buf = vmalloc(size); + return buf; +} + /** * seq_open - initialize sequential file * @file: file we initialize @@ -96,7 +108,7 @@ static int traverse(struct seq_file *m, loff_t offset) return 0; } if (!m->buf) { - m->buf = kmalloc(m->size = PAGE_SIZE, GFP_KERNEL); + m->buf = seq_buf_alloc(m->size = PAGE_SIZE); if (!m->buf) return -ENOMEM; } @@ -135,9 +147,9 @@ static int traverse(struct seq_file *m, loff_t offset) Eoverflow: m->op->stop(m, p); - kfree(m->buf); + kvfree(m->buf); m->count = 0; - m->buf = kmalloc(m->size <<= 1, GFP_KERNEL); + m->buf = seq_buf_alloc(m->size <<= 1); return !m->buf ? -ENOMEM : -EAGAIN; } @@ -192,7 +204,7 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) /* grab buffer if we didn't have one */ if (!m->buf) { - m->buf = kmalloc(m->size = PAGE_SIZE, GFP_KERNEL); + m->buf = seq_buf_alloc(m->size = PAGE_SIZE); if (!m->buf) goto Enomem; } @@ -232,9 +244,9 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos) if (m->count < m->size) goto Fill; m->op->stop(m, p); - kfree(m->buf); + kvfree(m->buf); m->count = 0; - m->buf = kmalloc(m->size <<= 1, GFP_KERNEL); + m->buf = seq_buf_alloc(m->size <<= 1); if (!m->buf) goto Enomem; m->version = 0; @@ -350,7 +362,7 @@ EXPORT_SYMBOL(seq_lseek); int seq_release(struct inode *inode, struct file *file) { struct seq_file *m = file->private_data; - kfree(m->buf); + kvfree(m->buf); kfree(m); return 0; } @@ -605,13 +617,13 @@ EXPORT_SYMBOL(single_open); int single_open_size(struct file *file, int (*show)(struct seq_file *, void *), void *data, size_t size) { - char *buf = kmalloc(size, GFP_KERNEL); + char *buf = seq_buf_alloc(size); int ret; if (!buf) return -ENOMEM; ret = single_open(file, show, data); if (ret) { - kfree(buf); + kvfree(buf); return ret; } ((struct seq_file *)file->private_data)->buf = buf; diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index ea2d5f6962ed..13e839dbca07 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c @@ -1416,9 +1416,10 @@ static int have_callable_console(void) /* * Can we actually use the console at this time on this cpu? * - * Console drivers may assume that per-cpu resources have been allocated. So - * unless they're explicitly marked as being able to cope (CON_ANYTIME) don't - * call them until this CPU is officially up. + * Console drivers may assume that per-cpu resources have + * been allocated. So unless they're explicitly marked as + * being able to cope (CON_ANYTIME) don't call them until + * this CPU is officially up. */ static inline int can_use_console(unsigned int cpu) { @@ -1431,10 +1432,8 @@ static inline int can_use_console(unsigned int cpu) * console_lock held, and 'console_locked' set) if it * is successful, false otherwise. */ -static int console_trylock_for_printk(void) +static int console_trylock_for_printk(unsigned int cpu) { - unsigned int cpu = smp_processor_id(); - if (!console_trylock()) return 0; /* @@ -1609,8 +1608,7 @@ asmlinkage int vprintk_emit(int facility, int level, */ if (!oops_in_progress && !lockdep_recursing(current)) { recursion_bug = 1; - local_irq_restore(flags); - return 0; + goto out_restore_irqs; } zap_locks(); } @@ -1718,27 +1716,21 @@ asmlinkage int vprintk_emit(int facility, int level, logbuf_cpu = UINT_MAX; raw_spin_unlock(&logbuf_lock); - lockdep_on(); - local_irq_restore(flags); /* If called from the scheduler, we can not call up(). */ - if (in_sched) - return printed_len; - - /* - * Disable preemption to avoid being preempted while holding - * console_sem which would prevent anyone from printing to console - */ - preempt_disable(); - /* - * Try to acquire and then immediately release the console semaphore. - * The release will print out buffers and wake up /dev/kmsg and syslog() - * users. - */ - if (console_trylock_for_printk()) - console_unlock(); - preempt_enable(); + if (!in_sched) { + /* + * Try to acquire and then immediately release the console + * semaphore. The release will print out buffers and wake up + * /dev/kmsg and syslog() users. + */ + if (console_trylock_for_printk(this_cpu)) + console_unlock(); + } + lockdep_on(); +out_restore_irqs: + local_irq_restore(flags); return printed_len; } EXPORT_SYMBOL(vprintk_emit); diff --git a/mm/memory-failure.c b/mm/memory-failure.c index cd8989c1027e..c6399e328931 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -895,7 +895,7 @@ static int hwpoison_user_mappings(struct page *p, unsigned long pfn, struct page *hpage = *hpagep; struct page *ppage; - if (PageReserved(p) || PageSlab(p)) + if (PageReserved(p) || PageSlab(p) || !PageLRU(p)) return SWAP_SUCCESS; /* @@ -1159,9 +1159,6 @@ int memory_failure(unsigned long pfn, int trapno, int flags) action_result(pfn, "free buddy, 2nd try", DELAYED); return 0; } - action_result(pfn, "non LRU", IGNORED); - put_page(p); - return -EBUSY; } } @@ -1194,6 +1191,9 @@ int memory_failure(unsigned long pfn, int trapno, int flags) return 0; } + if (!PageHuge(p) && !PageTransTail(p) && !PageLRU(p)) + goto identify_page_state; + /* * For error on the tail page, we should set PG_hwpoison * on the head page to show that the hugepage is hwpoisoned @@ -1243,6 +1243,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags) goto out; } +identify_page_state: res = -EBUSY; /* * The first check uses the current page flags which may not have any diff --git a/mm/msync.c b/mm/msync.c index a5c673669ca6..992a1673d488 100644 --- a/mm/msync.c +++ b/mm/msync.c @@ -78,7 +78,8 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags) goto out_unlock; } file = vma->vm_file; - fstart = start + ((loff_t)vma->vm_pgoff << PAGE_SHIFT); + fstart = (start - vma->vm_start) + + ((loff_t)vma->vm_pgoff << PAGE_SHIFT); fend = fstart + (min(end, vma->vm_end) - start) - 1; start = vma->vm_end; if ((flags & MS_SYNC) && file && diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 20d17f8266fe..0ea758b898fd 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -816,9 +816,21 @@ void __init init_cma_reserved_pageblock(struct page *page) set_page_count(p, 0); } while (++p, --i); - set_page_refcounted(page); set_pageblock_migratetype(page, MIGRATE_CMA); - __free_pages(page, pageblock_order); + + if (pageblock_order >= MAX_ORDER) { + i = pageblock_nr_pages; + p = page; + do { + set_page_refcounted(p); + __free_pages(p, MAX_ORDER - 1); + p += MAX_ORDER_NR_PAGES; + } while (i -= MAX_ORDER_NR_PAGES); + } else { + set_page_refcounted(page); + __free_pages(page, pageblock_order); + } + adjust_managed_page_count(page, pageblock_nr_pages); } #endif diff --git a/mm/shmem.c b/mm/shmem.c index 8f419cff9e34..1140f49b6ded 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1029,6 +1029,9 @@ repeat: goto failed; } + if (page && sgp == SGP_WRITE) + mark_page_accessed(page); + /* fallocated page? */ if (page && !PageUptodate(page)) { if (sgp != SGP_READ) @@ -1110,6 +1113,9 @@ repeat: shmem_recalc_inode(inode); spin_unlock(&info->lock); + if (sgp == SGP_WRITE) + mark_page_accessed(page); + delete_from_swap_cache(page); set_page_dirty(page); swap_free(swap); @@ -1136,6 +1142,9 @@ repeat: __SetPageSwapBacked(page); __set_page_locked(page); + if (sgp == SGP_WRITE) + init_page_accessed(page); + error = mem_cgroup_charge_file(page, current->mm, gfp & GFP_RECLAIM_MASK); if (error) @@ -1412,13 +1421,9 @@ shmem_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata) { - int ret; struct inode *inode = mapping->host; pgoff_t index = pos >> PAGE_CACHE_SHIFT; - ret = shmem_getpage(inode, index, pagep, SGP_WRITE, NULL); - if (ret == 0 && *pagep) - init_page_accessed(*pagep); - return ret; + return shmem_getpage(inode, index, pagep, SGP_WRITE, NULL); } static int diff --git a/mm/slub.c b/mm/slub.c index b2b047327d76..73004808537e 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -1881,7 +1881,7 @@ redo: new.frozen = 0; - if (!new.inuse && n->nr_partial > s->min_partial) + if (!new.inuse && n->nr_partial >= s->min_partial) m = M_FREE; else if (new.freelist) { m = M_PARTIAL; @@ -1992,7 +1992,7 @@ static void unfreeze_partials(struct kmem_cache *s, new.freelist, new.counters, "unfreezing slab")); - if (unlikely(!new.inuse && n->nr_partial > s->min_partial)) { + if (unlikely(!new.inuse && n->nr_partial >= s->min_partial)) { page->next = discard_page; discard_page = page; } else { @@ -2620,7 +2620,7 @@ static void __slab_free(struct kmem_cache *s, struct page *page, return; } - if (unlikely(!new.inuse && n->nr_partial > s->min_partial)) + if (unlikely(!new.inuse && n->nr_partial >= s->min_partial)) goto slab_empty; /* diff --git a/tools/testing/selftests/cpu-hotplug/Makefile b/tools/testing/selftests/cpu-hotplug/Makefile index ae5faf9aade2..790c23a9db44 100644 --- a/tools/testing/selftests/cpu-hotplug/Makefile +++ b/tools/testing/selftests/cpu-hotplug/Makefile @@ -1,6 +1,6 @@ all: run_tests: - @/bin/sh ./on-off-test.sh || echo "cpu-hotplug selftests: [FAIL]" + @/bin/bash ./on-off-test.sh || echo "cpu-hotplug selftests: [FAIL]" clean: diff --git a/tools/testing/selftests/ipc/msgque.c b/tools/testing/selftests/ipc/msgque.c index aa290c0de6f5..552f0810bffb 100644 --- a/tools/testing/selftests/ipc/msgque.c +++ b/tools/testing/selftests/ipc/msgque.c @@ -193,6 +193,11 @@ int main(int argc, char **argv) int msg, pid, err; struct msgque_data msgque; + if (getuid() != 0) { + printf("Please run the test as root - Exiting.\n"); + exit(1); + } + msgque.key = ftok(argv[0], 822155650); if (msgque.key == -1) { printf("Can't make key\n"); diff --git a/tools/testing/selftests/memory-hotplug/Makefile b/tools/testing/selftests/memory-hotplug/Makefile index 350bfeda3aa8..058c76f5d102 100644 --- a/tools/testing/selftests/memory-hotplug/Makefile +++ b/tools/testing/selftests/memory-hotplug/Makefile @@ -1,6 +1,6 @@ all: run_tests: - @/bin/sh ./on-off-test.sh || echo "memory-hotplug selftests: [FAIL]" + @/bin/bash ./on-off-test.sh || echo "memory-hotplug selftests: [FAIL]" clean: