Messages in this thread Patch in this message | | | Date | Wed, 23 May 2007 20:23:47 +0530 | From | Vaidyanathan Srinivasan <> | Subject | [RFC][PATCH 3/3] Containers: Pagecache accounting and control subsystem (v3) |
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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@linux.vnet.ibm.com> --- fs/exec.c | 4 ++-- mm/filemap.c | 18 ++++++++++++++++++ mm/fremap.c | 4 ++-- mm/memory.c | 20 ++++++++++---------- mm/migrate.c | 4 ++-- mm/rmap.c | 12 ++++++------ mm/swap_state.c | 16 ++++++++++++++++ mm/swapfile.c | 4 ++-- 8 files changed, 58 insertions(+), 24 deletions(-)
--- linux-2.6.20.orig/fs/exec.c +++ linux-2.6.20/fs/exec.c @@ -316,7 +316,7 @@ 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, PAGE_TYPE_RSS)) goto out;
flush_dcache_page(page); @@ -338,7 +338,7 @@ void install_arg_page(struct vm_area_str return;
out_release: - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS); out: __free_page(page); force_sig(SIGKILL, current); --- linux-2.6.20.orig/mm/filemap.c +++ linux-2.6.20/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_TYPE_PAGECACHE); page->mapping = NULL; mapping->nrpages--; __dec_zone_page_state(page, NR_FILE_PAGES); @@ -438,6 +442,8 @@ 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); @@ -451,6 +457,18 @@ 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, PAGE_TYPE_PAGECACHE)) + container_page_add(pc, PAGE_TYPE_PAGECACHE); + else + BUG(); + } + radix_tree_preload_end(); } return error; --- linux-2.6.20.orig/mm/fremap.c +++ linux-2.6.20/mm/fremap.c @@ -61,7 +61,7 @@ int install_page(struct mm_struct *mm, s spinlock_t *ptl; struct page_container *pcont;
- if (container_rss_prepare(page, vma, &pcont)) + if (container_page_prepare(page, vma->vm_mm, &pcont, PAGE_TYPE_RSS)) goto out_release;
pte = get_locked_pte(mm, addr, &ptl); @@ -95,7 +95,7 @@ unlock: pte_unmap_unlock(pte, ptl); out: if (err != 0) - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS); out_release: return err; } --- linux-2.6.20.orig/mm/memory.c +++ linux-2.6.20/mm/memory.c @@ -1583,7 +1583,7 @@ 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, PAGE_TYPE_RSS)) goto oom;
/* @@ -1619,7 +1619,7 @@ gotten: new_page = old_page; ret |= VM_FAULT_WRITE; } else - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS);
if (new_page) page_cache_release(new_page); @@ -2029,7 +2029,7 @@ 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, PAGE_TYPE_RSS)) { ret = VM_FAULT_OOM; goto out; } @@ -2047,7 +2047,7 @@ static int do_swap_page(struct mm_struct
if (unlikely(!PageUptodate(page))) { ret = VM_FAULT_SIGBUS; - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS); goto out_nomap; }
@@ -2084,7 +2084,7 @@ unlock: out: return ret; out_nomap: - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS); pte_unmap_unlock(page_table, ptl); unlock_page(page); page_cache_release(page); @@ -2115,7 +2115,7 @@ 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, PAGE_TYPE_RSS)) goto oom_release;
entry = mk_pte(page, vma->vm_page_prot); @@ -2151,7 +2151,7 @@ unlock: pte_unmap_unlock(page_table, ptl); return VM_FAULT_MINOR; release_container: - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS); release: page_cache_release(page); goto unlock; @@ -2245,7 +2245,7 @@ retry: } }
- if (container_rss_prepare(new_page, vma, &pcont)) + if (container_page_prepare(new_page, vma->vm_mm, &pcont, PAGE_TYPE_RSS)) goto oom;
page_table = pte_offset_map_lock(mm, pmd, address, &ptl); @@ -2256,7 +2256,7 @@ retry: */ if (mapping && unlikely(sequence != mapping->truncate_count)) { pte_unmap_unlock(page_table, ptl); - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS); page_cache_release(new_page); cond_resched(); sequence = mapping->truncate_count; @@ -2295,7 +2295,7 @@ retry: } } else { /* One of our sibling threads was faster, back out. */ - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS); page_cache_release(new_page); goto unlock; } --- linux-2.6.20.orig/mm/migrate.c +++ linux-2.6.20/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, PAGE_TYPE_RSS)) { 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, PAGE_TYPE_RSS); }
/* --- linux-2.6.20.orig/mm/rmap.c +++ linux-2.6.20/mm/rmap.c @@ -551,10 +551,10 @@ void page_add_anon_rmap(struct page *pag struct page_container *pcont) { if (atomic_inc_and_test(&page->_mapcount)) { - container_rss_add(pcont); + container_page_add(pcont, PAGE_TYPE_RSS|PAGE_SUBTYPE_ANON); __page_set_anon_rmap(page, vma, address); } else - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS|PAGE_SUBTYPE_ANON); /* else checking page index and mapping is racy */ }
@@ -573,7 +573,7 @@ void page_add_new_anon_rmap(struct page struct page_container *pcont) { atomic_set(&page->_mapcount, 0); /* elevate count by 1 (starts at -1) */ - container_rss_add(pcont); + container_page_add(pcont, PAGE_TYPE_RSS|PAGE_SUBTYPE_ANON); __page_set_anon_rmap(page, vma, address); }
@@ -588,10 +588,10 @@ void page_add_file_rmap(struct page *pag { if (atomic_inc_and_test(&page->_mapcount)) { if (pcont) - container_rss_add(pcont); + container_page_add(pcont, PAGE_TYPE_RSS|PAGE_SUBTYPE_FILE); __inc_zone_page_state(page, NR_FILE_MAPPED); } else if (pcont) - container_rss_release(pcont); + container_page_release(pcont, PAGE_TYPE_RSS|PAGE_SUBTYPE_FILE); }
/** @@ -621,7 +621,7 @@ void page_remove_rmap(struct page *page, }
if (pcont) - container_rss_del(pcont); + container_page_del(pcont, PAGE_TYPE_RSS); /* * It would be tidy to reset the PageAnon mapping here, * but that might overwrite a racing page_add_anon_rmap --- linux-2.6.20.orig/mm/swap_state.c +++ linux-2.6.20/mm/swap_state.c @@ -16,6 +16,7 @@ #include <linux/backing-dev.h> #include <linux/pagevec.h> #include <linux/migrate.h> +#include <linux/rss_container.h>
#include <asm/pgtable.h>
@@ -73,6 +74,8 @@ 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)); @@ -91,6 +94,17 @@ 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, PAGE_TYPE_PAGECACHE)) + container_page_add(pc, PAGE_TYPE_PAGECACHE); + else + BUG(); + } } return error; } @@ -129,6 +143,8 @@ 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), PAGE_TYPE_PAGECACHE); set_page_private(page, 0); ClearPageSwapCache(page); total_swapcache_pages--; --- linux-2.6.20.orig/mm/swapfile.c +++ linux-2.6.20/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, PAGE_TYPE_RSS)) 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, PAGE_TYPE_RSS); return found; }
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