Let's add FileHugePages and FilePmdMapped fields into meminfo and smaps. It indicates how many times we allocate and map file THP. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> --- drivers/base/node.c | 6 ++++++ fs/proc/meminfo.c | 4 ++++ fs/proc/task_mmu.c | 5 ++++- include/linux/mmzone.h | 2 ++ mm/filemap.c | 3 ++- mm/huge_memory.c | 5 ++++- mm/page_alloc.c | 5 +++++ mm/rmap.c | 12 ++++++++---- mm/vmstat.c | 2 ++ 9 files changed, 37 insertions(+), 7 deletions(-) diff --git a/drivers/base/node.c b/drivers/base/node.c index 5548f9686016..45be0ddb84ed 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -116,6 +116,8 @@ static ssize_t node_read_meminfo(struct device *dev, "Node %d AnonHugePages: %8lu kB\n" "Node %d ShmemHugePages: %8lu kB\n" "Node %d ShmemPmdMapped: %8lu kB\n" + "Node %d FileHugePages: %8lu kB\n" + "Node %d FilePmdMapped: %8lu kB\n" #endif , nid, K(node_page_state(pgdat, NR_FILE_DIRTY)), @@ -139,6 +141,10 @@ static ssize_t node_read_meminfo(struct device *dev, nid, K(node_page_state(pgdat, NR_SHMEM_THPS) * HPAGE_PMD_NR), nid, K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED) * + HPAGE_PMD_NR), + nid, K(node_page_state(pgdat, NR_FILE_THPS) * + HPAGE_PMD_NR), + nid, K(node_page_state(pgdat, NR_FILE_PMDMAPPED) * HPAGE_PMD_NR)); #else nid, K(sum_zone_node_page_state(nid, NR_SLAB_UNRECLAIMABLE))); diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index 09e18fdf61e5..201a060f2c6c 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -107,6 +107,8 @@ static int meminfo_proc_show(struct seq_file *m, void *v) "AnonHugePages: %8lu kB\n" "ShmemHugePages: %8lu kB\n" "ShmemPmdMapped: %8lu kB\n" + "FileHugePages: %8lu kB\n" + "FilePmdMapped: %8lu kB\n" #endif #ifdef CONFIG_CMA "CmaTotal: %8lu kB\n" @@ -167,6 +169,8 @@ static int meminfo_proc_show(struct seq_file *m, void *v) , K(global_node_page_state(NR_ANON_THPS) * HPAGE_PMD_NR) , K(global_node_page_state(NR_SHMEM_THPS) * HPAGE_PMD_NR) , K(global_node_page_state(NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR) + , K(global_node_page_state(NR_FILE_THPS) * HPAGE_PMD_NR) + , K(global_node_page_state(NR_FILE_PMDMAPPED) * HPAGE_PMD_NR) #endif #ifdef CONFIG_CMA , K(totalcma_pages) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 187d84ef9de9..de698238a451 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -449,6 +449,7 @@ struct mem_size_stats { unsigned long anonymous; unsigned long anonymous_thp; unsigned long shmem_thp; + unsigned long file_thp; unsigned long swap; unsigned long shared_hugetlb; unsigned long private_hugetlb; @@ -582,7 +583,7 @@ static void smaps_pmd_entry(pmd_t *pmd, unsigned long addr, else if (PageSwapBacked(page)) mss->shmem_thp += HPAGE_PMD_SIZE; else - VM_BUG_ON_PAGE(1, page); + mss->file_thp += HPAGE_PMD_SIZE; smaps_account(mss, page, true, pmd_young(*pmd), pmd_dirty(*pmd)); } #else @@ -777,6 +778,7 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) "Anonymous: %8lu kB\n" "AnonHugePages: %8lu kB\n" "ShmemPmdMapped: %8lu kB\n" + "FilePmdMapped: %8lu kB\n" "Shared_Hugetlb: %8lu kB\n" "Private_Hugetlb: %7lu kB\n" "Swap: %8lu kB\n" @@ -795,6 +797,7 @@ static int show_smap(struct seq_file *m, void *v, int is_pid) mss.anonymous >> 10, mss.anonymous_thp >> 10, mss.shmem_thp >> 10, + mss.file_thp >> 10, mss.shared_hugetlb >> 10, mss.private_hugetlb >> 10, mss.swap >> 10, diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index e6aca07cedb7..cb2011ee5fc7 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -154,6 +154,8 @@ enum node_stat_item { NR_SHMEM, /* shmem pages (included tmpfs/GEM pages) */ NR_SHMEM_THPS, NR_SHMEM_PMDMAPPED, + NR_FILE_THPS, + NR_FILE_PMDMAPPED, NR_ANON_THPS, NR_UNSTABLE_NFS, /* NFS unstable pages */ NR_VMSCAN_WRITE, diff --git a/mm/filemap.c b/mm/filemap.c index 6d545e5b9cec..7daedd910cf4 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -220,7 +220,8 @@ void __delete_from_page_cache(struct page *page, void *shadow) if (PageTransHuge(page)) __dec_node_page_state(page, NR_SHMEM_THPS); } else { - VM_BUG_ON_PAGE(PageTransHuge(page) && !PageHuge(page), page); + if (PageTransHuge(page) && !PageHuge(page)) + __dec_node_page_state(page, NR_FILE_THPS); } /* diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 383f360e5fff..c1444a99a583 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1830,7 +1830,10 @@ static void __split_huge_page(struct page *page, struct list_head *list, struct radix_tree_iter iter; void **slot; - __dec_node_page_state(head, NR_SHMEM_THPS); + if (PageSwapBacked(page)) + __dec_node_page_state(page, NR_SHMEM_THPS); + else + __dec_node_page_state(page, NR_FILE_THPS); radix_tree_split(&mapping->page_tree, head->index, 0); radix_tree_for_each_slot(slot, &mapping->page_tree, &iter, diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 830ad49a584a..f09f5832acc7 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -4341,6 +4341,8 @@ void show_free_areas(unsigned int filter) #ifdef CONFIG_TRANSPARENT_HUGEPAGE " shmem_thp: %lukB" " shmem_pmdmapped: %lukB" + " file_thp: %lukB" + " file_pmdmapped: %lukB" " anon_thp: %lukB" #endif " writeback_tmp:%lukB" @@ -4363,6 +4365,9 @@ void show_free_areas(unsigned int filter) K(node_page_state(pgdat, NR_SHMEM_THPS) * HPAGE_PMD_NR), K(node_page_state(pgdat, NR_SHMEM_PMDMAPPED) * HPAGE_PMD_NR), + K(node_page_state(pgdat, NR_FILE_THPS) * HPAGE_PMD_NR), + K(node_page_state(pgdat, NR_FILE_PMDMAPPED) + * HPAGE_PMD_NR), K(node_page_state(pgdat, NR_ANON_THPS) * HPAGE_PMD_NR), #endif K(node_page_state(pgdat, NR_SHMEM)), diff --git a/mm/rmap.c b/mm/rmap.c index 709bc83703b1..eee844997bd8 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1281,8 +1281,10 @@ void page_add_file_rmap(struct page *page, bool compound) } if (!atomic_inc_and_test(compound_mapcount_ptr(page))) goto out; - VM_BUG_ON_PAGE(!PageSwapBacked(page), page); - __inc_node_page_state(page, NR_SHMEM_PMDMAPPED); + if (PageSwapBacked(page)) + __inc_node_page_state(page, NR_SHMEM_PMDMAPPED); + else + __inc_node_page_state(page, NR_FILE_PMDMAPPED); } else { if (PageTransCompound(page)) { VM_BUG_ON_PAGE(!PageLocked(page), page); @@ -1321,8 +1323,10 @@ static void page_remove_file_rmap(struct page *page, bool compound) } if (!atomic_add_negative(-1, compound_mapcount_ptr(page))) goto out; - VM_BUG_ON_PAGE(!PageSwapBacked(page), page); - __dec_node_page_state(page, NR_SHMEM_PMDMAPPED); + if (PageSwapBacked(page)) + __dec_node_page_state(page, NR_SHMEM_PMDMAPPED); + else + __dec_node_page_state(page, NR_FILE_PMDMAPPED); } else { if (!atomic_add_negative(-1, &page->_mapcount)) goto out; diff --git a/mm/vmstat.c b/mm/vmstat.c index 91ecca96dcae..fcf899e25f49 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -961,6 +961,8 @@ const char * const vmstat_text[] = { "nr_shmem", "nr_shmem_hugepages", "nr_shmem_pmdmapped", + "nr_file_hugepaged", + "nr_file_pmdmapped", "nr_anon_transparent_hugepages", "nr_unstable", "nr_vmscan_write", -- 2.8.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. 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