diff options
| -rw-r--r-- | include/linux/rmap.h | 2 | ||||
| -rw-r--r-- | mm/filemap_xip.c | 2 | ||||
| -rw-r--r-- | mm/fremap.c | 2 | ||||
| -rw-r--r-- | mm/memory.c | 4 | ||||
| -rw-r--r-- | mm/rmap.c | 13 |
5 files changed, 15 insertions, 8 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h index 36f850373d2..bdd277223af 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -72,7 +72,7 @@ void __anon_vma_link(struct vm_area_struct *); void page_add_anon_rmap(struct page *, struct vm_area_struct *, unsigned long); void page_add_new_anon_rmap(struct page *, struct vm_area_struct *, unsigned long); void page_add_file_rmap(struct page *); -void page_remove_rmap(struct page *); +void page_remove_rmap(struct page *, struct vm_area_struct *); /** * page_dup_rmap - duplicate pte mapping to a page diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c index 8d667617f55..45b3553865c 100644 --- a/mm/filemap_xip.c +++ b/mm/filemap_xip.c @@ -189,7 +189,7 @@ __xip_unmap (struct address_space * mapping, /* Nuke the page table entry. */ flush_cache_page(vma, address, pte_pfn(*pte)); pteval = ptep_clear_flush(vma, address, pte); - page_remove_rmap(page); + page_remove_rmap(page, vma); dec_mm_counter(mm, file_rss); BUG_ON(pte_dirty(pteval)); pte_unmap_unlock(pte, ptl); diff --git a/mm/fremap.c b/mm/fremap.c index b77a002c335..4e3f53dd5fd 100644 --- a/mm/fremap.c +++ b/mm/fremap.c @@ -33,7 +33,7 @@ static int zap_pte(struct mm_struct *mm, struct vm_area_struct *vma, if (page) { if (pte_dirty(pte)) set_page_dirty(page); - page_remove_rmap(page); + page_remove_rmap(page, vma); page_cache_release(page); } } else { diff --git a/mm/memory.c b/mm/memory.c index c00bac66ce9..563792f4f68 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -681,7 +681,7 @@ static unsigned long zap_pte_range(struct mmu_gather *tlb, mark_page_accessed(page); file_rss--; } - page_remove_rmap(page); + page_remove_rmap(page, vma); tlb_remove_page(tlb, page); continue; } @@ -1586,7 +1586,7 @@ gotten: page_table = pte_offset_map_lock(mm, pmd, address, &ptl); if (likely(pte_same(*page_table, orig_pte))) { if (old_page) { - page_remove_rmap(old_page); + page_remove_rmap(old_page, vma); if (!PageAnon(old_page)) { dec_mm_counter(mm, file_rss); inc_mm_counter(mm, anon_rss); diff --git a/mm/rmap.c b/mm/rmap.c index d8a842a586d..b3deda8b501 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -47,6 +47,7 @@ #include <linux/rmap.h> #include <linux/rcupdate.h> #include <linux/module.h> +#include <linux/kallsyms.h> #include <asm/tlbflush.h> @@ -567,14 +568,20 @@ void page_add_file_rmap(struct page *page) * * The caller needs to hold the pte lock. */ -void page_remove_rmap(struct page *page) +void page_remove_rmap(struct page *page, struct vm_area_struct *vma) { if (atomic_add_negative(-1, &page->_mapcount)) { if (unlikely(page_mapcount(page) < 0)) { printk (KERN_EMERG "Eeek! page_mapcount(page) went negative! (%d)\n", page_mapcount(page)); + printk (KERN_EMERG " page pfn = %lx\n", page_to_pfn(page)); printk (KERN_EMERG " page->flags = %lx\n", page->flags); printk (KERN_EMERG " page->count = %x\n", page_count(page)); printk (KERN_EMERG " page->mapping = %p\n", page->mapping); + print_symbol (KERN_EMERG " vma->vm_ops = %s\n", (unsigned long)vma->vm_ops); + if (vma->vm_ops) + print_symbol (KERN_EMERG " vma->vm_ops->nopage = %s\n", (unsigned long)vma->vm_ops->nopage); + if (vma->vm_file && vma->vm_file->f_op) + print_symbol (KERN_EMERG " vma->vm_file->f_op->mmap = %s\n", (unsigned long)vma->vm_file->f_op->mmap); BUG(); } @@ -679,7 +686,7 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma, dec_mm_counter(mm, file_rss); - page_remove_rmap(page); + page_remove_rmap(page, vma); page_cache_release(page); out_unmap: @@ -769,7 +776,7 @@ static void try_to_unmap_cluster(unsigned long cursor, if (pte_dirty(pteval)) set_page_dirty(page); - page_remove_rmap(page); + page_remove_rmap(page, vma); page_cache_release(page); dec_mm_counter(mm, file_rss); (*mapcount)--; |