diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/Kconfig | 4 | ||||
| -rw-r--r-- | mm/mmap.c | 34 | ||||
| -rw-r--r-- | mm/oom_kill.c | 1 | ||||
| -rw-r--r-- | mm/page_alloc.c | 4 | ||||
| -rw-r--r-- | mm/slub.c | 3 | ||||
| -rw-r--r-- | mm/swapfile.c | 6 | ||||
| -rw-r--r-- | mm/vmstat.c | 1 |
7 files changed, 45 insertions, 8 deletions
@@ -116,11 +116,11 @@ config SPARSEMEM_EXTREME config MEMORY_HOTPLUG bool "Allow for memory hot-add" depends on SPARSEMEM || X86_64_ACPI_NUMA - depends on HOTPLUG && !SOFTWARE_SUSPEND && ARCH_ENABLE_MEMORY_HOTPLUG + depends on HOTPLUG && !HIBERNATION && ARCH_ENABLE_MEMORY_HOTPLUG depends on (IA64 || X86 || PPC64 || SUPERH) comment "Memory hotplug is currently incompatible with Software Suspend" - depends on SPARSEMEM && HOTPLUG && SOFTWARE_SUSPEND + depends on SPARSEMEM && HOTPLUG && HIBERNATION config MEMORY_HOTPLUG_SPARSE def_bool y @@ -1029,6 +1029,40 @@ unsigned long do_mmap_pgoff(struct file * file, unsigned long addr, } EXPORT_SYMBOL(do_mmap_pgoff); +/* + * Some shared mappigns will want the pages marked read-only + * to track write events. If so, we'll downgrade vm_page_prot + * to the private version (using protection_map[] without the + * VM_SHARED bit). + */ +int vma_wants_writenotify(struct vm_area_struct *vma) +{ + unsigned int vm_flags = vma->vm_flags; + + /* If it was private or non-writable, the write bit is already clear */ + if ((vm_flags & (VM_WRITE|VM_SHARED)) != ((VM_WRITE|VM_SHARED))) + return 0; + + /* The backer wishes to know when pages are first written to? */ + if (vma->vm_ops && vma->vm_ops->page_mkwrite) + return 1; + + /* The open routine did something to the protections already? */ + if (pgprot_val(vma->vm_page_prot) != + pgprot_val(protection_map[vm_flags & + (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)])) + return 0; + + /* Specialty mapping? */ + if (vm_flags & (VM_PFNMAP|VM_INSERTPAGE)) + return 0; + + /* Can the mapping track the dirty pages? */ + return vma->vm_file && vma->vm_file->f_mapping && + mapping_cap_account_dirty(vma->vm_file->f_mapping); +} + + unsigned long mmap_region(struct file *file, unsigned long addr, unsigned long len, unsigned long flags, unsigned int vm_flags, unsigned long pgoff, diff --git a/mm/oom_kill.c b/mm/oom_kill.c index a700141..1036765 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -17,6 +17,7 @@ #include <linux/oom.h> #include <linux/mm.h> +#include <linux/err.h> #include <linux/sched.h> #include <linux/swap.h> #include <linux/timex.h> diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 6d3550c..0bd4d82 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -726,7 +726,7 @@ static void __drain_pages(unsigned int cpu) } } -#ifdef CONFIG_PM +#ifdef CONFIG_HIBERNATION void mark_free_pages(struct zone *zone) { @@ -772,7 +772,7 @@ void drain_local_pages(void) __drain_pages(smp_processor_id()); local_irq_restore(flags); } -#endif /* CONFIG_PM */ +#endif /* CONFIG_HIBERNATION */ /* * Free a 0-order page @@ -1131,6 +1131,7 @@ static void __free_slab(struct kmem_cache *s, struct page *page) slab_pad_check(s, page); for_each_object(p, s, page_address(page)) check_object(s, page, p, 0); + ClearSlabDebug(page); } mod_zone_page_state(page_zone(page), @@ -1169,7 +1170,6 @@ static void discard_slab(struct kmem_cache *s, struct page *page) atomic_long_dec(&n->nr_slabs); reset_page_mapcount(page); - ClearSlabDebug(page); __ClearPageSlab(page); free_slab(s, page); } @@ -1656,6 +1656,7 @@ static void __always_inline slab_free(struct kmem_cache *s, unsigned long flags; local_irq_save(flags); + debug_check_no_locks_freed(object, s->objsize); if (likely(page == s->cpu_slab[smp_processor_id()] && !SlabDebug(page))) { object[page->offset] = page->lockless_freelist; diff --git a/mm/swapfile.c b/mm/swapfile.c index 7ff0a81..f071648 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -425,7 +425,7 @@ void free_swap_and_cache(swp_entry_t entry) } } -#ifdef CONFIG_SOFTWARE_SUSPEND +#ifdef CONFIG_HIBERNATION /* * Find the swap type that corresponds to given device (if any). * @@ -951,7 +951,7 @@ sector_t map_swap_page(struct swap_info_struct *sis, pgoff_t offset) } } -#ifdef CONFIG_SOFTWARE_SUSPEND +#ifdef CONFIG_HIBERNATION /* * Get the (PAGE_SIZE) block corresponding to given offset on the swapdev * corresponding to given index in swap_info (swap type). @@ -966,7 +966,7 @@ sector_t swapdev_block(int swap_type, pgoff_t offset) sis = swap_info + swap_type; return (sis->flags & SWP_WRITEOK) ? map_swap_page(sis, offset) : 0; } -#endif /* CONFIG_SOFTWARE_SUSPEND */ +#endif /* CONFIG_HIBERNATION */ /* * Free all of a swapdev's extent information diff --git a/mm/vmstat.c b/mm/vmstat.c index fadf791..c64d169 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -10,6 +10,7 @@ */ #include <linux/mm.h> +#include <linux/err.h> #include <linux/module.h> #include <linux/cpu.h> #include <linux/sched.h> |