diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/Kconfig | 18 | ||||
| -rw-r--r-- | mm/Makefile | 1 | ||||
| -rw-r--r-- | mm/backing-dev.c | 2 | ||||
| -rw-r--r-- | mm/bounce.c | 287 | ||||
| -rw-r--r-- | mm/filemap.c | 10 | ||||
| -rw-r--r-- | mm/huge_memory.c | 2 | ||||
| -rw-r--r-- | mm/kmemleak.c | 4 | ||||
| -rw-r--r-- | mm/madvise.c | 2 | ||||
| -rw-r--r-- | mm/memblock.c | 205 | ||||
| -rw-r--r-- | mm/memcontrol.c | 27 | ||||
| -rw-r--r-- | mm/memory-failure.c | 17 | ||||
| -rw-r--r-- | mm/memory.c | 3 | ||||
| -rw-r--r-- | mm/mremap.c | 9 | ||||
| -rw-r--r-- | mm/percpu.c | 2 |
14 files changed, 196 insertions, 393 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index ebe5880c29d6..28cec518f4d4 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -134,6 +134,9 @@ config HAVE_MEMBLOCK config HAVE_MEMBLOCK_NODE_MAP boolean +config HAVE_MEMBLOCK_PHYS_MAP + boolean + config ARCH_DISCARD_MEMBLOCK boolean @@ -581,3 +584,18 @@ config PGTABLE_MAPPING config GENERIC_EARLY_IOREMAP bool + +config MAX_STACK_SIZE_MB + int "Maximum user stack size for 32-bit processes (MB)" + default 80 + range 8 256 if METAG + range 8 2048 + depends on STACK_GROWSUP && (!64BIT || COMPAT) + help + This is the maximum stack size in Megabytes in the VM layout of 32-bit + user processes when the stack grows upwards (currently only on parisc + and metag arch). The stack will be located at the highest memory + address minus the given value, unless the RLIMIT_STACK hard limit is + changed to a smaller value in which case that is used. + + A sane initial value is 80 MB. diff --git a/mm/Makefile b/mm/Makefile index b484452dac57..0173940407f6 100644 --- a/mm/Makefile +++ b/mm/Makefile @@ -30,7 +30,6 @@ endif obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o -obj-$(CONFIG_BOUNCE) += bounce.o obj-$(CONFIG_SWAP) += page_io.o swap_state.o swapfile.o obj-$(CONFIG_FRONTSWAP) += frontswap.o obj-$(CONFIG_ZSWAP) += zswap.o diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 09d9591b7708..1706cbbdf5f0 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -557,7 +557,7 @@ void clear_bdi_congested(struct backing_dev_info *bdi, int sync) bit = sync ? BDI_sync_congested : BDI_async_congested; if (test_and_clear_bit(bit, &bdi->state)) atomic_dec(&nr_bdi_congested[sync]); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); if (waitqueue_active(wqh)) wake_up(wqh); } diff --git a/mm/bounce.c b/mm/bounce.c deleted file mode 100644 index 523918b8c6dc..000000000000 --- a/mm/bounce.c +++ /dev/null @@ -1,287 +0,0 @@ -/* bounce buffer handling for block devices - * - * - Split from highmem.c - */ - -#include <linux/mm.h> -#include <linux/export.h> -#include <linux/swap.h> -#include <linux/gfp.h> -#include <linux/bio.h> -#include <linux/pagemap.h> -#include <linux/mempool.h> -#include <linux/blkdev.h> -#include <linux/init.h> -#include <linux/hash.h> -#include <linux/highmem.h> -#include <linux/bootmem.h> -#include <asm/tlbflush.h> - -#include <trace/events/block.h> - -#define POOL_SIZE 64 -#define ISA_POOL_SIZE 16 - -static mempool_t *page_pool, *isa_page_pool; - -#if defined(CONFIG_HIGHMEM) || defined(CONFIG_NEED_BOUNCE_POOL) -static __init int init_emergency_pool(void) -{ -#if defined(CONFIG_HIGHMEM) && !defined(CONFIG_MEMORY_HOTPLUG) - if (max_pfn <= max_low_pfn) - return 0; -#endif - - page_pool = mempool_create_page_pool(POOL_SIZE, 0); - BUG_ON(!page_pool); - printk("bounce pool size: %d pages\n", POOL_SIZE); - - return 0; -} - -__initcall(init_emergency_pool); -#endif - -#ifdef CONFIG_HIGHMEM -/* - * highmem version, map in to vec - */ -static void bounce_copy_vec(struct bio_vec *to, unsigned char *vfrom) -{ - unsigned long flags; - unsigned char *vto; - - local_irq_save(flags); - vto = kmap_atomic(to->bv_page); - memcpy(vto + to->bv_offset, vfrom, to->bv_len); - kunmap_atomic(vto); - local_irq_restore(flags); -} - -#else /* CONFIG_HIGHMEM */ - -#define bounce_copy_vec(to, vfrom) \ - memcpy(page_address((to)->bv_page) + (to)->bv_offset, vfrom, (to)->bv_len) - -#endif /* CONFIG_HIGHMEM */ - -/* - * allocate pages in the DMA region for the ISA pool - */ -static void *mempool_alloc_pages_isa(gfp_t gfp_mask, void *data) -{ - return mempool_alloc_pages(gfp_mask | GFP_DMA, data); -} - -/* - * gets called "every" time someone init's a queue with BLK_BOUNCE_ISA - * as the max address, so check if the pool has already been created. - */ -int init_emergency_isa_pool(void) -{ - if (isa_page_pool) - return 0; - - isa_page_pool = mempool_create(ISA_POOL_SIZE, mempool_alloc_pages_isa, - mempool_free_pages, (void *) 0); - BUG_ON(!isa_page_pool); - - printk("isa bounce pool size: %d pages\n", ISA_POOL_SIZE); - return 0; -} - -/* - * Simple bounce buffer support for highmem pages. Depending on the - * queue gfp mask set, *to may or may not be a highmem page. kmap it - * always, it will do the Right Thing - */ -static void copy_to_high_bio_irq(struct bio *to, struct bio *from) -{ - unsigned char *vfrom; - struct bio_vec tovec, *fromvec = from->bi_io_vec; - struct bvec_iter iter; - - bio_for_each_segment(tovec, to, iter) { - if (tovec.bv_page != fromvec->bv_page) { - /* - * fromvec->bv_offset and fromvec->bv_len might have - * been modified by the block layer, so use the original - * copy, bounce_copy_vec already uses tovec->bv_len - */ - vfrom = page_address(fromvec->bv_page) + - tovec.bv_offset; - - bounce_copy_vec(&tovec, vfrom); - flush_dcache_page(tovec.bv_page); - } - - fromvec++; - } -} - -static void bounce_end_io(struct bio *bio, mempool_t *pool, int err) -{ - struct bio *bio_orig = bio->bi_private; - struct bio_vec *bvec, *org_vec; - int i; - - if (test_bit(BIO_EOPNOTSUPP, &bio->bi_flags)) - set_bit(BIO_EOPNOTSUPP, &bio_orig->bi_flags); - - /* - * free up bounce indirect pages used - */ - bio_for_each_segment_all(bvec, bio, i) { - org_vec = bio_orig->bi_io_vec + i; - if (bvec->bv_page == org_vec->bv_page) - continue; - - dec_zone_page_state(bvec->bv_page, NR_BOUNCE); - mempool_free(bvec->bv_page, pool); - } - - bio_endio(bio_orig, err); - bio_put(bio); -} - -static void bounce_end_io_write(struct bio *bio, int err) -{ - bounce_end_io(bio, page_pool, err); -} - -static void bounce_end_io_write_isa(struct bio *bio, int err) -{ - - bounce_end_io(bio, isa_page_pool, err); -} - -static void __bounce_end_io_read(struct bio *bio, mempool_t *pool, int err) -{ - struct bio *bio_orig = bio->bi_private; - - if (test_bit(BIO_UPTODATE, &bio->bi_flags)) - copy_to_high_bio_irq(bio_orig, bio); - - bounce_end_io(bio, pool, err); -} - -static void bounce_end_io_read(struct bio *bio, int err) -{ - __bounce_end_io_read(bio, page_pool, err); -} - -static void bounce_end_io_read_isa(struct bio *bio, int err) -{ - __bounce_end_io_read(bio, isa_page_pool, err); -} - -#ifdef CONFIG_NEED_BOUNCE_POOL -static int must_snapshot_stable_pages(struct request_queue *q, struct bio *bio) -{ - if (bio_data_dir(bio) != WRITE) - return 0; - - if (!bdi_cap_stable_pages_required(&q->backing_dev_info)) - return 0; - - return test_bit(BIO_SNAP_STABLE, &bio->bi_flags); -} -#else -static int must_snapshot_stable_pages(struct request_queue *q, struct bio *bio) -{ - return 0; -} -#endif /* CONFIG_NEED_BOUNCE_POOL */ - -static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig, - mempool_t *pool, int force) -{ - struct bio *bio; - int rw = bio_data_dir(*bio_orig); - struct bio_vec *to, from; - struct bvec_iter iter; - unsigned i; - - if (force) - goto bounce; - bio_for_each_segment(from, *bio_orig, iter) - if (page_to_pfn(from.bv_page) > queue_bounce_pfn(q)) - goto bounce; - - return; -bounce: - bio = bio_clone_bioset(*bio_orig, GFP_NOIO, fs_bio_set); - - bio_for_each_segment_all(to, bio, i) { - struct page *page = to->bv_page; - - if (page_to_pfn(page) <= queue_bounce_pfn(q) && !force) - continue; - - inc_zone_page_state(to->bv_page, NR_BOUNCE); - to->bv_page = mempool_alloc(pool, q->bounce_gfp); - - if (rw == WRITE) { - char *vto, *vfrom; - - flush_dcache_page(page); - - vto = page_address(to->bv_page) + to->bv_offset; - vfrom = kmap_atomic(page) + to->bv_offset; - memcpy(vto, vfrom, to->bv_len); - kunmap_atomic(vfrom); - } - } - - trace_block_bio_bounce(q, *bio_orig); - - bio->bi_flags |= (1 << BIO_BOUNCED); - - if (pool == page_pool) { - bio->bi_end_io = bounce_end_io_write; - if (rw == READ) - bio->bi_end_io = bounce_end_io_read; - } else { - bio->bi_end_io = bounce_end_io_write_isa; - if (rw == READ) - bio->bi_end_io = bounce_end_io_read_isa; - } - - bio->bi_private = *bio_orig; - *bio_orig = bio; -} - -void blk_queue_bounce(struct request_queue *q, struct bio **bio_orig) -{ - int must_bounce; - mempool_t *pool; - - /* - * Data-less bio, nothing to bounce - */ - if (!bio_has_data(*bio_orig)) - return; - - must_bounce = must_snapshot_stable_pages(q, *bio_orig); - - /* - * for non-isa bounce case, just check if the bounce pfn is equal - * to or bigger than the highest pfn in the system -- in that case, - * don't waste time iterating over bio segments - */ - if (!(q->bounce_gfp & GFP_DMA)) { - if (queue_bounce_pfn(q) >= blk_max_pfn && !must_bounce) - return; - pool = page_pool; - } else { - BUG_ON(!isa_page_pool); - pool = isa_page_pool; - } - - /* - * slow path - */ - __blk_queue_bounce(q, bio_orig, pool, must_bounce); -} - -EXPORT_SYMBOL(blk_queue_bounce); diff --git a/mm/filemap.c b/mm/filemap.c index 000a220e2a41..021056c324e6 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -257,9 +257,11 @@ static int filemap_check_errors(struct address_space *mapping) { int ret = 0; /* Check for outstanding write errors */ - if (test_and_clear_bit(AS_ENOSPC, &mapping->flags)) + if (test_bit(AS_ENOSPC, &mapping->flags) && + test_and_clear_bit(AS_ENOSPC, &mapping->flags)) ret = -ENOSPC; - if (test_and_clear_bit(AS_EIO, &mapping->flags)) + if (test_bit(AS_EIO, &mapping->flags) && + test_and_clear_bit(AS_EIO, &mapping->flags)) ret = -EIO; return ret; } @@ -740,7 +742,7 @@ void unlock_page(struct page *page) { VM_BUG_ON_PAGE(!PageLocked(page), page); clear_bit_unlock(PG_locked, &page->flags); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_page(page, PG_locked); } EXPORT_SYMBOL(unlock_page); @@ -757,7 +759,7 @@ void end_page_writeback(struct page *page) if (!test_clear_page_writeback(page)) BUG(); - smp_mb__after_clear_bit(); + smp_mb__after_atomic(); wake_up_page(page, PG_writeback); } EXPORT_SYMBOL(end_page_writeback); diff --git a/mm/huge_memory.c b/mm/huge_memory.c index b4b1feba6472..d199d2d91946 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -2740,7 +2740,7 @@ static int khugepaged(void *none) struct mm_slot *mm_slot; set_freezable(); - set_user_nice(current, 19); + set_user_nice(current, MAX_NICE); while (!kthread_should_stop()) { khugepaged_do_scan(); diff --git a/mm/kmemleak.c b/mm/kmemleak.c index 91d67eaee050..8d2fcdfeff7f 100644 --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -1775,10 +1775,9 @@ void __init kmemleak_init(void) int i; unsigned long flags; - kmemleak_early_log = 0; - #ifdef CONFIG_DEBUG_KMEMLEAK_DEFAULT_OFF if (!kmemleak_skip_disable) { + kmemleak_early_log = 0; kmemleak_disable(); return; } @@ -1796,6 +1795,7 @@ void __init kmemleak_init(void) /* the kernel is still in UP mode, so disabling the IRQs is enough */ local_irq_save(flags); + kmemleak_early_log = 0; if (kmemleak_error) { local_irq_restore(flags); return; diff --git a/mm/madvise.c b/mm/madvise.c index 539eeb96b323..a402f8fdc68e 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -195,7 +195,7 @@ static void force_shm_swapin_readahead(struct vm_area_struct *vma, for (; start < end; start += PAGE_SIZE) { index = ((start - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff; - page = find_get_page(mapping, index); + page = find_get_entry(mapping, index); if (!radix_tree_exceptional_entry(page)) { if (page) page_cache_release(page); diff --git a/mm/memblock.c b/mm/memblock.c index e9d6ca9a01a9..a810ba923cdd 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -27,6 +27,9 @@ static struct memblock_region memblock_memory_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock; static struct memblock_region memblock_reserved_init_regions[INIT_MEMBLOCK_REGIONS] __initdata_memblock; +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP +static struct memblock_region memblock_physmem_init_regions[INIT_PHYSMEM_REGIONS] __initdata_memblock; +#endif struct memblock memblock __initdata_memblock = { .memory.regions = memblock_memory_init_regions, @@ -37,6 +40,12 @@ struct memblock memblock __initdata_memblock = { .reserved.cnt = 1, /* empty dummy entry */ .reserved.max = INIT_MEMBLOCK_REGIONS, +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP + .physmem.regions = memblock_physmem_init_regions, + .physmem.cnt = 1, /* empty dummy entry */ + .physmem.max = INIT_PHYSMEM_REGIONS, +#endif + .bottom_up = false, .current_limit = MEMBLOCK_ALLOC_ANYWHERE, }; @@ -472,7 +481,7 @@ static void __init_memblock memblock_insert_region(struct memblock_type *type, } /** - * memblock_add_region - add new memblock region + * memblock_add_range - add new memblock region * @type: memblock type to add new region into * @base: base address of the new region * @size: size of the new region @@ -487,7 +496,7 @@ static void __init_memblock memblock_insert_region(struct memblock_type *type, * RETURNS: * 0 on success, -errno on failure. */ -static int __init_memblock memblock_add_region(struct memblock_type *type, +int __init_memblock memblock_add_range(struct memblock_type *type, phys_addr_t base, phys_addr_t size, int nid, unsigned long flags) { @@ -569,12 +578,12 @@ repeat: int __init_memblock memblock_add_node(phys_addr_t base, phys_addr_t size, int nid) { - return memblock_add_region(&memblock.memory, base, size, nid, 0); + return memblock_add_range(&memblock.memory, base, size, nid, 0); } int __init_memblock memblock_add(phys_addr_t base, phys_addr_t size) { - return memblock_add_region(&memblock.memory, base, size, + return memblock_add_range(&memblock.memory, base, size, MAX_NUMNODES, 0); } @@ -654,8 +663,8 @@ static int __init_memblock memblock_isolate_range(struct memblock_type *type, return 0; } -static int __init_memblock __memblock_remove(struct memblock_type *type, - phys_addr_t base, phys_addr_t size) +int __init_memblock memblock_remove_range(struct memblock_type *type, + phys_addr_t base, phys_addr_t size) { int start_rgn, end_rgn; int i, ret; @@ -671,9 +680,10 @@ static int __init_memblock __memblock_remove(struct memblock_type *type, int __init_memblock memblock_remove(phys_addr_t base, phys_addr_t size) { - return __memblock_remove(&memblock.memory, base, size); + return memblock_remove_range(&memblock.memory, base, size); } + int __init_memblock memblock_free(phys_addr_t base, phys_addr_t size) { memblock_dbg(" memblock_free: [%#016llx-%#016llx] %pF\n", @@ -681,7 +691,7 @@ int __init_memblock memblock_free(phys_addr_t base, phys_addr_t size) (unsigned long long)base + size - 1, (void *)_RET_IP_); - return __memblock_remove(&memblock.reserved, base, size); + return memblock_remove_range(&memblock.reserved, base, size); } static int __init_memblock memblock_reserve_region(phys_addr_t base, @@ -696,7 +706,7 @@ static int __init_memblock memblock_reserve_region(phys_addr_t base, (unsigned long long)base + size - 1, flags, (void *)_RET_IP_); - return memblock_add_region(_rgn, base, size, nid, flags); + return memblock_add_range(_rgn, base, size, nid, flags); } int __init_memblock memblock_reserve(phys_addr_t base, phys_addr_t size) @@ -758,17 +768,19 @@ int __init_memblock memblock_clear_hotplug(phys_addr_t base, phys_addr_t size) } /** - * __next_free_mem_range - next function for for_each_free_mem_range() + * __next__mem_range - next function for for_each_free_mem_range() etc. * @idx: pointer to u64 loop variable * @nid: node selector, %NUMA_NO_NODE for all nodes + * @type_a: pointer to memblock_type from where the range is taken + * @type_b: pointer to memblock_type which excludes memory from being taken * @out_start: ptr to phys_addr_t for start address of the range, can be %NULL * @out_end: ptr to phys_addr_t for end address of the range, can be %NULL * @out_nid: ptr to int for nid of the range, can be %NULL * - * Find the first free area from *@idx which matches @nid, fill the out + * Find the first area from *@idx which matches @nid, fill the out * parameters, and update *@idx for the next iteration. The lower 32bit of - * *@idx contains index into memory region and the upper 32bit indexes the - * areas before each reserved region. For example, if reserved regions + * *@idx contains index into type_a and the upper 32bit indexes the + * areas before each region in type_b. For example, if type_b regions * look like the following, * * 0:[0-16), 1:[32-48), 2:[128-130) @@ -780,53 +792,77 @@ int __init_memblock memblock_clear_hotplug(phys_addr_t base, phys_addr_t size) * As both region arrays are sorted, the function advances the two indices * in lockstep and returns each intersection. */ -void __init_memblock __next_free_mem_range(u64 *idx, int nid, - phys_addr_t *out_start, - phys_addr_t *out_end, int *out_nid) +void __init_memblock __next_mem_range(u64 *idx, int nid, + struct memblock_type *type_a, + struct memblock_type *type_b, + phys_addr_t *out_start, + phys_addr_t *out_end, int *out_nid) { - struct memblock_type *mem = &memblock.memory; - struct memblock_type *rsv = &memblock.reserved; - int mi = *idx & 0xffffffff; - int ri = *idx >> 32; + int idx_a = *idx & 0xffffffff; + int idx_b = *idx >> 32; - if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead\n")) + if (WARN_ONCE(nid == MAX_NUMNODES, + "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead\n")) nid = NUMA_NO_NODE; - for ( ; mi < mem->cnt; mi++) { - struct memblock_region *m = &mem->regions[mi]; + for (; idx_a < type_a->cnt; idx_a++) { + struct memblock_region *m = &type_a->regions[idx_a]; + phys_addr_t m_start = m->base; phys_addr_t m_end = m->base + m->size; + int m_nid = memblock_get_region_node(m); /* only memory regions are associated with nodes, check it */ - if (nid != NUMA_NO_NODE && nid != memblock_get_region_node(m)) + if (nid != NUMA_NO_NODE && nid != m_nid) continue; - /* scan areas before each reservation for intersection */ - for ( ; ri < rsv->cnt + 1; ri++) { - struct memblock_region *r = &rsv->regions[ri]; - phys_addr_t r_start = ri ? r[-1].base + r[-1].size : 0; - phys_addr_t r_end = ri < rsv->cnt ? r->base : ULLONG_MAX; + if (!type_b) { + if (out_start) + *out_start = m_start; + if (out_end) + *out_end = m_end; + if (out_nid) + *out_nid = m_nid; + idx_a++; + *idx = (u32)idx_a | (u64)idx_b << 32; + return; + } - /* if ri advanced past mi, break out to advance mi */ + /* scan areas before each reservation */ + for (; idx_b < type_b->cnt + 1; idx_b++) { + struct memblock_region *r; + phys_addr_t r_start; + phys_addr_t r_end; + + r = &type_b->regions[idx_b]; + r_start = idx_b ? r[-1].base + r[-1].size : 0; + r_end = idx_b < type_b->cnt ? + r->base : ULLONG_MAX; + + /* + * if idx_b advanced past idx_a, + * break out to advance idx_a + */ if (r_start >= m_end) break; /* if the two regions intersect, we're done */ if (m_start < r_end) { if (out_start) - *out_start = max(m_start, r_start); + *out_start = + max(m_start, r_start); if (out_end) *out_end = min(m_end, r_end); if (out_nid) - *out_nid = memblock_get_region_node(m); + *out_nid = m_nid; /* - * The region which ends first is advanced - * for the next iteration. + * The region which ends first is + * advanced for the next iteration. */ if (m_end <= r_end) - mi++; + idx_a++; else - ri++; - *idx = (u32)mi | (u64)ri << 32; + idx_b++; + *idx = (u32)idx_a | (u64)idx_b << 32; return; } } @@ -837,57 +873,80 @@ void __init_memblock __next_free_mem_range(u64 *idx, int nid, } /** - * __next_free_mem_range_rev - next function for for_each_free_mem_range_reverse() + * __next_mem_range_rev - generic next function for for_each_*_range_rev() + * + * Finds the next range from type_a which is not marked as unsuitable + * in type_b. + * * @idx: pointer to u64 loop variable * @nid: nid: node selector, %NUMA_NO_NODE for all nodes + * @type_a: pointer to memblock_type from where the range is taken + * @type_b: pointer to memblock_type which excludes memory from being taken * @out_start: ptr to phys_addr_t for start address of the range, can be %NULL * @out_end: ptr to phys_addr_t for end address of the range, can be %NULL * @out_nid: ptr to int for nid of the range, can be %NULL * - * Reverse of __next_free_mem_range(). - * - * Linux kernel cannot migrate pages used by itself. Memory hotplug users won't - * be able to hot-remove hotpluggable memory used by the kernel. So this - * function skip hotpluggable regions if needed when allocating memory for the - * kernel. + * Reverse of __next_mem_range(). */ -void __init_memblock __next_free_mem_range_rev(u64 *idx, int nid, - phys_addr_t *out_start, - phys_addr_t *out_end, int *out_nid) +void __init_memblock __next_mem_range_rev(u64 *idx, int nid, + struct memblock_type *type_a, + struct memblock_type *type_b, + phys_addr_t *out_start, + phys_addr_t *out_end, int *out_nid) { - struct memblock_type *mem = &memblock.memory; - struct memblock_type *rsv = &memblock.reserved; - int mi = *idx & 0xffffffff; - int ri = *idx >> 32; + int idx_a = *idx & 0xffffffff; + int idx_b = *idx >> 32; if (WARN_ONCE(nid == MAX_NUMNODES, "Usage of MAX_NUMNODES is deprecated. Use NUMA_NO_NODE instead\n")) nid = NUMA_NO_NODE; if (*idx == (u64)ULLONG_MAX) { - mi = mem->cnt - 1; - ri = rsv->cnt; + idx_a = type_a->cnt - 1; + idx_b = type_b->cnt; } - for ( ; mi >= 0; mi--) { - struct memblock_region *m = &mem->regions[mi]; + for (; idx_a >= 0; idx_a--) { + struct memblock_region *m = &type_a->regions[idx_a]; + phys_addr_t m_start = m->base; phys_addr_t m_end = m->base + m->size; + int m_nid = memblock_get_region_node(m); /* only memory regions are associated with nodes, check it */ - if (nid != NUMA_NO_NODE && nid != memblock_get_region_node(m)) + if (nid != NUMA_NO_NODE && nid != m_nid) continue; /* skip hotpluggable memory regions if needed */ if (movable_node_is_enabled() && memblock_is_hotpluggable(m)) continue; - /* scan areas before each reservation for intersection */ - for ( ; ri >= 0; ri--) { - struct memblock_region *r = &rsv->regions[ri]; - phys_addr_t r_start = ri ? r[-1].base + r[-1].size : 0; - phys_addr_t r_end = ri < rsv->cnt ? r->base : ULLONG_MAX; + if (!type_b) { + if (out_start) + *out_start = m_start; + if (out_end) + *out_end = m_end; + if (out_nid) + *out_nid = m_nid; + idx_a++; + *idx = (u32)idx_a | (u64)idx_b << 32; + return; + } + + /* scan areas before each reservation */ + for (; idx_b >= 0; idx_b--) { + struct memblock_region *r; + phys_addr_t r_start; + phys_addr_t r_end; + + r = &type_b->regions[idx_b]; + r_start = idx_b ? r[-1].base + r[-1].size : 0; + r_end = idx_b < type_b->cnt ? + r->base : ULLONG_MAX; + /* + * if idx_b advanced past idx_a, + * break out to advance idx_a + */ - /* if ri advanced past mi, break out to advance mi */ if (r_end <= m_start) break; /* if the two regions intersect, we're done */ @@ -897,18 +956,17 @@ void __init_memblock __next_free_mem_range_rev(u64 *idx, int nid, if (out_end) *out_end = min(m_end, r_end); if (out_nid) - *out_nid = memblock_get_region_node(m); - + *out_nid = m_nid; if (m_start >= r_start) - mi--; + idx_a--; else - ri--; - *idx = (u32)mi | (u64)ri << 32; + idx_b--; + *idx = (u32)idx_a | (u64)idx_b << 32; return; } } } - + /* signal end of iteration */ *idx = ULLONG_MAX; } @@ -1201,7 +1259,7 @@ void __init __memblock_free_early(phys_addr_t base, phys_addr_t size) __func__, (u64)base, (u64)base + size - 1, (void *)_RET_IP_); kmemleak_free_part(__va(base), size); - __memblock_remove(&memblock.reserved, base, size); + memblock_remove_range(&memblock.reserved, base, size); } /* @@ -1287,8 +1345,10 @@ void __init memblock_enforce_memory_limit(phys_addr_t limit) } /* truncate both memory and reserved regions */ - __memblock_remove(&memblock.memory, max_addr, (phys_addr_t)ULLONG_MAX); - __memblock_remove(&memblock.reserved, max_addr, (phys_addr_t)ULLONG_MAX); + memblock_remove_range(&memblock.memory, max_addr, + (phys_addr_t)ULLONG_MAX); + memblock_remove_range(&memblock.reserved, max_addr, + (phys_addr_t)ULLONG_MAX); } static int __init_memblock memblock_search(struct memblock_type *type, phys_addr_t addr) @@ -1502,6 +1562,9 @@ static int __init memblock_init_debugfs(void) return -ENXIO; debugfs_create_file("memory", S_IRUGO, root, &memblock.memory, &memblock_debug_fops); debugfs_create_file("reserved", S_IRUGO, root, &memblock.reserved, &memblock_debug_fops); +#ifdef CONFIG_HAVE_MEMBLOCK_PHYS_MAP + debugfs_create_file("physmem", S_IRUGO, root, &memblock.physmem, &memblock_debug_fops); +#endif return 0; } diff --git a/mm/memcontrol.c b/mm/memcontrol.c index c47dffdcb246..5177c6d4a2dd 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1077,9 +1077,18 @@ static struct mem_cgroup *get_mem_cgroup_from_mm(struct mm_struct *mm) rcu_read_lock(); do { - memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); - if (unlikely(!memcg)) + /* + * Page cache insertions can happen withou an + * actual mm context, e.g. during disk probing + * on boot, loopback IO, acct() writes etc. + */ + if (unlikely(!mm)) memcg = root_mem_cgroup; + else { + memcg = mem_cgroup_from_task(rcu_dereference(mm->owner)); + if (unlikely(!memcg)) + memcg = root_mem_cgroup; + } } while (!css_tryget(&memcg->css)); rcu_read_unlock(); return memcg; @@ -3958,17 +3967,9 @@ int mem_cgroup_charge_file(struct page *page, struct mm_struct *mm, return 0; } - /* - * Page cache insertions can happen without an actual mm - * context, e.g. during disk probing on boot. - */ - if (unlikely(!mm)) - memcg = root_mem_cgroup; - else { - memcg = mem_cgroup_try_charge_mm(mm, gfp_mask, 1, true); - if (!memcg) - return -ENOMEM; - } + memcg = mem_cgroup_try_charge_mm(mm, gfp_mask, 1, true); + if (!memcg) + return -ENOMEM; __mem_cgroup_commit_charge(memcg, page, 1, type, false); return 0; } diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 35ef28acf137..9ccef39a9de2 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1081,15 +1081,16 @@ int memory_failure(unsigned long pfn, int trapno, int flags) return 0; } else if (PageHuge(hpage)) { /* - * Check "just unpoisoned", "filter hit", and - * "race with other subpage." + * Check "filter hit" and "race with other subpage." */ lock_page(hpage); - if (!PageHWPoison(hpage) - || (hwpoison_filter(p) && TestClearPageHWPoison(p)) - || (p != hpage && TestSetPageHWPoison(hpage))) { - atomic_long_sub(nr_pages, &num_poisoned_pages); - return 0; + if (PageHWPoison(hpage)) { + if ((hwpoison_filter(p) && TestClearPageHWPoison(p)) + || (p != hpage && TestSetPageHWPoison(hpage))) { + atomic_long_sub(nr_pages, &num_poisoned_pages); + unlock_page(hpage); + return 0; + } } set_page_hwpoison_huge_page(hpage); res = dequeue_hwpoisoned_huge_page(hpage); @@ -1152,6 +1153,8 @@ int memory_failure(unsigned long pfn, int trapno, int flags) */ if (!PageHWPoison(p)) { printk(KERN_ERR "MCE %#lx: just unpoisoned\n", pfn); + atomic_long_sub(nr_pages, &num_poisoned_pages); + put_page(hpage); res = 0; goto out; } diff --git a/mm/memory.c b/mm/memory.c index 037b812a9531..e302ae1dcce0 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3920,9 +3920,6 @@ static int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma, } } - /* THP should already have been handled */ - BUG_ON(pmd_numa(*pmd)); - /* * Use __pte_alloc instead of pte_alloc_map, because we can't * run pte_offset_map on the pmd, if an huge pmd could diff --git a/mm/mremap.c b/mm/mremap.c index 0843feb66f3d..05f1180e9f21 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -194,10 +194,17 @@ unsigned long move_page_tables(struct vm_area_struct *vma, break; if (pmd_trans_huge(*old_pmd)) { int err = 0; - if (extent == HPAGE_PMD_SIZE) + if (extent == HPAGE_PMD_SIZE) { + VM_BUG_ON(vma->vm_file || !vma->anon_vma); + /* See comment in move_ptes() */ + if (need_rmap_locks) + anon_vma_lock_write(vma->anon_vma); err = move_huge_pmd(vma, new_vma, old_addr, new_addr, old_end, old_pmd, new_pmd); + if (need_rmap_locks) + anon_vma_unlock_write(vma->anon_vma); + } if (err > 0) { need_flush = true; continue; diff --git a/mm/percpu.c b/mm/percpu.c index 63e24fb4387b..2ddf9a990dbd 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -610,7 +610,7 @@ static struct pcpu_chunk *pcpu_alloc_chunk(void) chunk->map = pcpu_mem_zalloc(PCPU_DFL_MAP_ALLOC * sizeof(chunk->map[0])); if (!chunk->map) { - kfree(chunk); + pcpu_mem_free(chunk, pcpu_chunk_struct_size); return NULL; } |
