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Date: Fri, 29 Jun 2007 11:51:01 +0530 From: Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com> To: Linux Kernel <linux-kernel@...r.kernel.org>, Linux Containers <containers@...ts.osdl.org>, linux-mm <linux-mm@...ck.org> CC: Balbir Singh <balbir@...ibm.com>, Pavel Emelianov <xemul@...ru>, Paul Menage <menage@...gle.com>, Kirill Korotaev <dev@...ru>, devel@...nvz.org, Andrew Morton <akpm@...ux-foundation.org>, "Eric W. Biederman" <ebiederm@...ssion.com>, Herbert Poetzl <herbert@...hfloor.at>, Roy Huang <royhuang9@...il.com>, Aubrey Li <aubreylee@...il.com>, Peter Zijlstra <peterz@...radead.org> Subject: [RFC][PATCH 2/3] Pagecache and RSS accounting hooks Pagecache and RSS accounting Hooks ---------------------------------- New calls have been added from swap_state.c and filemap.c to track pagecache and swapcache pages. All existing RSS hooks have been generalised for pagecache accounting as well. Most of these are function prototype changes. Signed-off-by: Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com> --- fs/exec.c | 4 ++-- mm/filemap.c | 17 +++++++++++++++++ mm/memory.c | 18 +++++++++--------- mm/migrate.c | 4 ++-- mm/rmap.c | 12 ++++++------ mm/swap_state.c | 16 ++++++++++++++++ mm/swapfile.c | 4 ++-- 7 files changed, 54 insertions(+), 21 deletions(-) --- linux-2.6.22-rc2-mm1.orig/fs/exec.c +++ linux-2.6.22-rc2-mm1/fs/exec.c @@ -321,7 +321,7 @@ void install_arg_page(struct vm_area_str if (unlikely(anon_vma_prepare(vma))) goto out; - if (container_rss_prepare(page, vma, &pcont)) + if (container_page_prepare(page, vma->vm_mm, &pcont)) goto out; flush_dcache_page(page); @@ -343,7 +343,7 @@ void install_arg_page(struct vm_area_str return; out_release: - container_rss_release(pcont); + container_page_release(pcont); out: __free_page(page); force_sig(SIGKILL, current); --- linux-2.6.22-rc2-mm1.orig/mm/filemap.c +++ linux-2.6.22-rc2-mm1/mm/filemap.c @@ -30,6 +30,7 @@ #include <linux/security.h> #include <linux/syscalls.h> #include <linux/cpuset.h> +#include <linux/rss_container.h> #include "filemap.h" #include "internal.h" @@ -117,6 +118,9 @@ void __remove_from_page_cache(struct pag struct address_space *mapping = page->mapping; radix_tree_delete(&mapping->page_tree, page->index); + /* Uncharge before the mapping is gone */ + if (page_container(page)) + container_page_del(page_container(page)); page->mapping = NULL; mapping->nrpages--; __dec_zone_page_state(page, NR_FILE_PAGES); @@ -440,6 +444,8 @@ int add_to_page_cache(struct page *page, pgoff_t offset, gfp_t gfp_mask) { int error = radix_tree_preload(gfp_mask & ~__GFP_HIGHMEM); + struct page_container *pc; + struct mm_struct *mm; if (error == 0) { write_lock_irq(&mapping->tree_lock); @@ -453,6 +459,17 @@ int add_to_page_cache(struct page *page, __inc_zone_page_state(page, NR_FILE_PAGES); } write_unlock_irq(&mapping->tree_lock); + /* Unlock before charge, because we may reclaim this inline */ + if(!error) { + if (current->mm) + mm = current->mm; + else + mm = &init_mm; + if (!container_page_prepare(page, mm, &pc)) + container_page_add(pc); + else + BUG(); + } radix_tree_preload_end(); } return error; --- linux-2.6.22-rc2-mm1.orig/mm/memory.c +++ linux-2.6.22-rc2-mm1/mm/memory.c @@ -1755,7 +1755,7 @@ gotten: cow_user_page(new_page, old_page, address, vma); } - if (container_rss_prepare(new_page, vma, &pcont)) + if (container_page_prepare(new_page, vma->vm_mm, &pcont)) goto oom; /* @@ -1791,7 +1791,7 @@ gotten: new_page = old_page; ret |= VM_FAULT_WRITE; } else - container_rss_release(pcont); + container_page_release(pcont); if (new_page) page_cache_release(new_page); @@ -2217,7 +2217,7 @@ static int do_swap_page(struct mm_struct count_vm_event(PGMAJFAULT); } - if (container_rss_prepare(page, vma, &pcont)) { + if (container_page_prepare(page, vma->vm_mm, &pcont)) { ret = VM_FAULT_OOM; goto out; } @@ -2235,7 +2235,7 @@ static int do_swap_page(struct mm_struct if (unlikely(!PageUptodate(page))) { ret = VM_FAULT_SIGBUS; - container_rss_release(pcont); + container_page_release(pcont); goto out_nomap; } @@ -2271,7 +2271,7 @@ unlock: out: return ret; out_nomap: - container_rss_release(pcont); + container_page_release(pcont); pte_unmap_unlock(page_table, ptl); unlock_page(page); page_cache_release(page); @@ -2302,7 +2302,7 @@ static int do_anonymous_page(struct mm_s if (!page) goto oom; - if (container_rss_prepare(page, vma, &pcont)) + if (container_page_prepare(page, vma->vm_mm, &pcont)) goto oom_release; entry = mk_pte(page, vma->vm_page_prot); @@ -2338,7 +2338,7 @@ unlock: pte_unmap_unlock(page_table, ptl); return VM_FAULT_MINOR; release_container: - container_rss_release(pcont); + container_page_release(pcont); release: page_cache_release(page); goto unlock; @@ -2442,7 +2442,7 @@ static int __do_fault(struct mm_struct * } - if (container_rss_prepare(page, vma, &pcont)) { + if (container_page_prepare(page, vma->vm_mm, &pcont)) { fdata.type = VM_FAULT_OOM; goto out; } @@ -2483,7 +2483,7 @@ static int __do_fault(struct mm_struct * update_mmu_cache(vma, address, entry); lazy_mmu_prot_update(entry); } else { - container_rss_release(pcont); + container_page_release(pcont); if (anon) page_cache_release(page); else --- linux-2.6.22-rc2-mm1.orig/mm/migrate.c +++ linux-2.6.22-rc2-mm1/mm/migrate.c @@ -159,7 +159,7 @@ static void remove_migration_pte(struct return; } - if (container_rss_prepare(new, vma, &pcont)) { + if (container_page_prepare(new, vma->vm_mm, &pcont)) { pte_unmap(ptep); return; } @@ -194,7 +194,7 @@ static void remove_migration_pte(struct out: pte_unmap_unlock(ptep, ptl); - container_rss_release(pcont); + container_page_release(pcont); } /* --- linux-2.6.22-rc2-mm1.orig/mm/rmap.c +++ linux-2.6.22-rc2-mm1/mm/rmap.c @@ -578,14 +578,14 @@ void page_add_anon_rmap(struct page *pag if (atomic_inc_and_test(&page->_mapcount)) { __page_set_anon_rmap(page, vma, address); /* 0 -> 1 state change */ - container_rss_add(pcont); + container_page_add(pcont); } else { __page_check_anon_rmap(page, vma, address); /* * we raced with another touch or just mapped the page * for the N-th time */ - container_rss_release(pcont); + container_page_release(pcont); } } @@ -606,7 +606,7 @@ void page_add_new_anon_rmap(struct page { BUG_ON(address < vma->vm_start || address >= vma->vm_end); atomic_set(&page->_mapcount, 0); /* elevate count by 1 (starts at -1) */ - container_rss_add(pcont); + container_page_add(pcont); __page_set_anon_rmap(page, vma, address); } @@ -628,10 +628,10 @@ void page_add_file_rmap(struct page *pag * are not added to the container as they do not imply * RSS consumption --xemul */ - container_rss_add(pcont); + container_page_add(pcont); __inc_zone_page_state(page, NR_FILE_MAPPED); } else if (pcont) - container_rss_release(pcont); + container_page_release(pcont); } #ifdef CONFIG_DEBUG_VM @@ -689,7 +689,7 @@ void page_remove_rmap(struct page *page, } if (pcont) - container_rss_del(pcont); + container_page_del(pcont); /* * It would be tidy to reset the PageAnon mapping here, * but that might overwrite a racing page_add_anon_rmap --- linux-2.6.22-rc2-mm1.orig/mm/swap_state.c +++ linux-2.6.22-rc2-mm1/mm/swap_state.c @@ -17,6 +17,7 @@ #include <linux/backing-dev.h> #include <linux/pagevec.h> #include <linux/migrate.h> +#include <linux/rss_container.h> #include <asm/pgtable.h> @@ -74,6 +75,8 @@ static int __add_to_swap_cache(struct pa gfp_t gfp_mask) { int error; + struct page_container *pc; + struct mm_struct *mm; BUG_ON(PageSwapCache(page)); BUG_ON(PagePrivate(page)); @@ -92,6 +95,17 @@ static int __add_to_swap_cache(struct pa } write_unlock_irq(&swapper_space.tree_lock); radix_tree_preload_end(); + /* Unlock before charge, because we may reclaim this inline */ + if(!error) { + if (current->mm) + mm = current->mm; + else + mm = &init_mm; + if (!container_page_prepare(page, mm, &pc)) + container_page_add(pc); + else + BUG(); + } } return error; } @@ -130,6 +144,8 @@ void __delete_from_swap_cache(struct pag BUG_ON(PagePrivate(page)); radix_tree_delete(&swapper_space.page_tree, page_private(page)); + if (page_container(page)) + container_page_del(page_container(page)); set_page_private(page, 0); ClearPageSwapCache(page); total_swapcache_pages--; --- linux-2.6.22-rc2-mm1.orig/mm/swapfile.c +++ linux-2.6.22-rc2-mm1/mm/swapfile.c @@ -535,7 +535,7 @@ static int unuse_pte_range(struct vm_are int found = 0; struct page_container *pcont; - if (container_rss_prepare(page, vma, &pcont)) + if (container_page_prepare(page, vma->vm_mm, &pcont)) return 0; pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl); @@ -552,7 +552,7 @@ static int unuse_pte_range(struct vm_are } while (pte++, addr += PAGE_SIZE, addr != end); pte_unmap_unlock(pte - 1, ptl); if (!found) - container_rss_release(pcont); + container_page_release(pcont); return found; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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