diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 10 | ||||
| -rw-r--r-- | mm/hugetlb.c | 8 | ||||
| -rw-r--r-- | mm/page_alloc.c | 53 | ||||
| -rw-r--r-- | mm/readahead.c | 1 | ||||
| -rw-r--r-- | mm/slab.c | 13 | ||||
| -rw-r--r-- | mm/util.c | 6 |
6 files changed, 52 insertions, 39 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index ec469235985d..3464b681f844 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -1139,11 +1139,11 @@ success: } /** - * __generic_file_aio_read - generic filesystem read routine + * generic_file_aio_read - generic filesystem read routine * @iocb: kernel I/O control block * @iov: io vector request * @nr_segs: number of segments in the iovec - * @ppos: current file position + * @pos: current file position * * This is the "read()" routine for all filesystems * that can use the page cache directly. @@ -1198,8 +1198,10 @@ generic_file_aio_read(struct kiocb *iocb, const struct iovec *iov, if (retval > 0) *ppos = pos + retval; } - file_accessed(filp); - goto out; + if (likely(retval != 0)) { + file_accessed(filp); + goto out; + } } retval = 0; diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 7c7d03dbf73d..1d709ff528e1 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -364,6 +364,8 @@ void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start, pte_t *ptep; pte_t pte; struct page *page; + struct page *tmp; + LIST_HEAD(page_list); WARN_ON(!is_vm_hugetlb_page(vma)); BUG_ON(start & ~HPAGE_MASK); @@ -384,12 +386,16 @@ void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start, continue; page = pte_page(pte); - put_page(page); + list_add(&page->lru, &page_list); add_mm_counter(mm, file_rss, (int) -(HPAGE_SIZE / PAGE_SIZE)); } spin_unlock(&mm->page_table_lock); flush_tlb_range(vma, start, end); + list_for_each_entry_safe(page, tmp, &page_list, lru) { + list_del(&page->lru); + put_page(page); + } } static int hugetlb_cow(struct mm_struct *mm, struct vm_area_struct *vma, diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 4f59d90b81e6..a8c003e7b3d5 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -900,7 +900,8 @@ int zone_watermark_ok(struct zone *z, int order, unsigned long mark, int classzone_idx, int alloc_flags) { /* free_pages my go negative - that's OK */ - long min = mark, free_pages = z->free_pages - (1 << order) + 1; + unsigned long min = mark; + long free_pages = z->free_pages - (1 << order) + 1; int o; if (alloc_flags & ALLOC_HIGH) @@ -2050,8 +2051,8 @@ int __init early_pfn_to_nid(unsigned long pfn) /** * free_bootmem_with_active_regions - Call free_bootmem_node for each active range - * @nid: The node to free memory on. If MAX_NUMNODES, all nodes are freed - * @max_low_pfn: The highest PFN that till be passed to free_bootmem_node + * @nid: The node to free memory on. If MAX_NUMNODES, all nodes are freed. + * @max_low_pfn: The highest PFN that will be passed to free_bootmem_node * * If an architecture guarantees that all ranges registered with * add_active_ranges() contain no holes and may be freed, this @@ -2081,11 +2082,11 @@ void __init free_bootmem_with_active_regions(int nid, /** * sparse_memory_present_with_active_regions - Call memory_present for each active range - * @nid: The node to call memory_present for. If MAX_NUMNODES, all nodes will be used + * @nid: The node to call memory_present for. If MAX_NUMNODES, all nodes will be used. * * If an architecture guarantees that all ranges registered with * add_active_ranges() contain no holes and may be freed, this - * this function may be used instead of calling memory_present() manually. + * function may be used instead of calling memory_present() manually. */ void __init sparse_memory_present_with_active_regions(int nid) { @@ -2155,14 +2156,14 @@ static void __init account_node_boundary(unsigned int nid, /** * get_pfn_range_for_nid - Return the start and end page frames for a node - * @nid: The nid to return the range for. If MAX_NUMNODES, the min and max PFN are returned - * @start_pfn: Passed by reference. On return, it will have the node start_pfn - * @end_pfn: Passed by reference. On return, it will have the node end_pfn + * @nid: The nid to return the range for. If MAX_NUMNODES, the min and max PFN are returned. + * @start_pfn: Passed by reference. On return, it will have the node start_pfn. + * @end_pfn: Passed by reference. On return, it will have the node end_pfn. * * It returns the start and end page frame of a node based on information * provided by an arch calling add_active_range(). If called for a node * with no available memory, a warning is printed and the start and end - * PFNs will be 0 + * PFNs will be 0. */ void __init get_pfn_range_for_nid(unsigned int nid, unsigned long *start_pfn, unsigned long *end_pfn) @@ -2215,7 +2216,7 @@ unsigned long __init zone_spanned_pages_in_node(int nid, /* * Return the number of holes in a range on a node. If nid is MAX_NUMNODES, - * then all holes in the requested range will be accounted for + * then all holes in the requested range will be accounted for. */ unsigned long __init __absent_pages_in_range(int nid, unsigned long range_start_pfn, @@ -2268,7 +2269,7 @@ unsigned long __init __absent_pages_in_range(int nid, * @start_pfn: The start PFN to start searching for holes * @end_pfn: The end PFN to stop searching for holes * - * It returns the number of pages frames in memory holes within a range + * It returns the number of pages frames in memory holes within a range. */ unsigned long __init absent_pages_in_range(unsigned long start_pfn, unsigned long end_pfn) @@ -2582,11 +2583,12 @@ void __init shrink_active_range(unsigned int nid, unsigned long old_end_pfn, /** * remove_all_active_ranges - Remove all currently registered regions + * * During discovery, it may be found that a table like SRAT is invalid * and an alternative discovery method must be used. This function removes * all currently registered regions. */ -void __init remove_all_active_ranges() +void __init remove_all_active_ranges(void) { memset(early_node_map, 0, sizeof(early_node_map)); nr_nodemap_entries = 0; @@ -2636,7 +2638,7 @@ unsigned long __init find_min_pfn_for_node(unsigned long nid) * find_min_pfn_with_active_regions - Find the minimum PFN registered * * It returns the minimum PFN based on information provided via - * add_active_range() + * add_active_range(). */ unsigned long __init find_min_pfn_with_active_regions(void) { @@ -2647,7 +2649,7 @@ unsigned long __init find_min_pfn_with_active_regions(void) * find_max_pfn_with_active_regions - Find the maximum PFN registered * * It returns the maximum PFN based on information provided via - * add_active_range() + * add_active_range(). */ unsigned long __init find_max_pfn_with_active_regions(void) { @@ -2662,10 +2664,7 @@ unsigned long __init find_max_pfn_with_active_regions(void) /** * free_area_init_nodes - Initialise all pg_data_t and zone data - * @arch_max_dma_pfn: The maximum PFN usable for ZONE_DMA - * @arch_max_dma32_pfn: The maximum PFN usable for ZONE_DMA32 - * @arch_max_low_pfn: The maximum PFN usable for ZONE_NORMAL - * @arch_max_high_pfn: The maximum PFN usable for ZONE_HIGHMEM + * @max_zone_pfn: an array of max PFNs for each zone * * This will call free_area_init_node() for each active node in the system. * Using the page ranges provided by add_active_range(), the size of each @@ -2723,14 +2722,15 @@ void __init free_area_init_nodes(unsigned long *max_zone_pfn) #endif /* CONFIG_ARCH_POPULATES_NODE_MAP */ /** - * set_dma_reserve - Account the specified number of pages reserved in ZONE_DMA - * @new_dma_reserve - The number of pages to mark reserved + * set_dma_reserve - set the specified number of pages reserved in the first zone + * @new_dma_reserve: The number of pages to mark reserved * * The per-cpu batchsize and zone watermarks are determined by present_pages. * In the DMA zone, a significant percentage may be consumed by kernel image * and other unfreeable allocations which can skew the watermarks badly. This - * function may optionally be used to account for unfreeable pages in - * ZONE_DMA. The effect will be lower watermarks and smaller per-cpu batchsize + * function may optionally be used to account for unfreeable pages in the + * first zone (e.g., ZONE_DMA). The effect will be lower watermarks and + * smaller per-cpu batchsize. */ void __init set_dma_reserve(unsigned long new_dma_reserve) { @@ -2843,10 +2843,11 @@ static void setup_per_zone_lowmem_reserve(void) calculate_totalreserve_pages(); } -/* - * setup_per_zone_pages_min - called when min_free_kbytes changes. Ensures - * that the pages_{min,low,high} values for each zone are set correctly - * with respect to min_free_kbytes. +/** + * setup_per_zone_pages_min - called when min_free_kbytes changes. + * + * Ensures that the pages_{min,low,high} values for each zone are set correctly + * with respect to min_free_kbytes. */ void setup_per_zone_pages_min(void) { diff --git a/mm/readahead.c b/mm/readahead.c index aa7ec424656a..1ba736ac0367 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -38,6 +38,7 @@ file_ra_state_init(struct file_ra_state *ra, struct address_space *mapping) ra->ra_pages = mapping->backing_dev_info->ra_pages; ra->prev_page = -1; } +EXPORT_SYMBOL_GPL(file_ra_state_init); /* * Return max readahead size for this inode in number-of-pages. diff --git a/mm/slab.c b/mm/slab.c index f3514351aed8..e9a63b5a7fb9 100644 --- a/mm/slab.c +++ b/mm/slab.c @@ -3487,22 +3487,25 @@ static __always_inline void *__do_kmalloc(size_t size, gfp_t flags, } +#ifdef CONFIG_DEBUG_SLAB void *__kmalloc(size_t size, gfp_t flags) { -#ifndef CONFIG_DEBUG_SLAB - return __do_kmalloc(size, flags, NULL); -#else return __do_kmalloc(size, flags, __builtin_return_address(0)); -#endif } EXPORT_SYMBOL(__kmalloc); -#ifdef CONFIG_DEBUG_SLAB void *__kmalloc_track_caller(size_t size, gfp_t flags, void *caller) { return __do_kmalloc(size, flags, caller); } EXPORT_SYMBOL(__kmalloc_track_caller); + +#else +void *__kmalloc(size_t size, gfp_t flags) +{ + return __do_kmalloc(size, flags, NULL); +} +EXPORT_SYMBOL(__kmalloc); #endif /** diff --git a/mm/util.c b/mm/util.c index e14fa84ef39a..ace2aea69f1a 100644 --- a/mm/util.c +++ b/mm/util.c @@ -11,7 +11,7 @@ */ void *__kzalloc(size_t size, gfp_t flags) { - void *ret = ____kmalloc(size, flags); + void *ret = kmalloc_track_caller(size, flags); if (ret) memset(ret, 0, size); return ret; @@ -33,7 +33,7 @@ char *kstrdup(const char *s, gfp_t gfp) return NULL; len = strlen(s) + 1; - buf = ____kmalloc(len, gfp); + buf = kmalloc_track_caller(len, gfp); if (buf) memcpy(buf, s, len); return buf; @@ -51,7 +51,7 @@ void *kmemdup(const void *src, size_t len, gfp_t gfp) { void *p; - p = ____kmalloc(len, gfp); + p = kmalloc_track_caller(len, gfp); if (p) memcpy(p, src, len); return p; |