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Diffstat (limited to 'mm/filemap.c')
-rw-r--r--mm/filemap.c61
1 files changed, 44 insertions, 17 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index a863d0f9d..1283fc825 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -100,6 +100,7 @@
* ->tree_lock (page_remove_rmap->set_page_dirty)
* bdi.wb->list_lock (page_remove_rmap->set_page_dirty)
* ->inode->i_lock (page_remove_rmap->set_page_dirty)
+ * ->memcg->move_lock (page_remove_rmap->mem_cgroup_begin_page_stat)
* bdi.wb->list_lock (zap_pte_range->set_page_dirty)
* ->inode->i_lock (zap_pte_range->set_page_dirty)
* ->private_lock (zap_pte_range->__set_page_dirty_buffers)
@@ -174,9 +175,11 @@ static void page_cache_tree_delete(struct address_space *mapping,
/*
* Delete a page from the page cache and free it. Caller has to make
* sure the page is locked and that nobody else uses it - or that usage
- * is safe. The caller must hold the mapping's tree_lock.
+ * is safe. The caller must hold the mapping's tree_lock and
+ * mem_cgroup_begin_page_stat().
*/
-void __delete_from_page_cache(struct page *page, void *shadow)
+void __delete_from_page_cache(struct page *page, void *shadow,
+ struct mem_cgroup *memcg)
{
struct address_space *mapping = page->mapping;
@@ -196,7 +199,9 @@ void __delete_from_page_cache(struct page *page, void *shadow)
page->mapping = NULL;
/* Leave page->index set: truncation lookup relies upon it */
- __dec_zone_page_state(page, NR_FILE_PAGES);
+ /* hugetlb pages do not participate in page cache accounting. */
+ if (!PageHuge(page))
+ __dec_zone_page_state(page, NR_FILE_PAGES);
if (PageSwapBacked(page))
__dec_zone_page_state(page, NR_SHMEM);
BUG_ON(page_mapped(page));
@@ -210,7 +215,8 @@ void __delete_from_page_cache(struct page *page, void *shadow)
* anyway will be cleared before returning page into buddy allocator.
*/
if (WARN_ON_ONCE(PageDirty(page)))
- account_page_cleaned(page, mapping);
+ account_page_cleaned(page, mapping, memcg,
+ inode_to_wb(mapping->host));
}
/**
@@ -224,14 +230,20 @@ void __delete_from_page_cache(struct page *page, void *shadow)
void delete_from_page_cache(struct page *page)
{
struct address_space *mapping = page->mapping;
+ struct mem_cgroup *memcg;
+ unsigned long flags;
+
void (*freepage)(struct page *);
BUG_ON(!PageLocked(page));
freepage = mapping->a_ops->freepage;
- spin_lock_irq(&mapping->tree_lock);
- __delete_from_page_cache(page, NULL);
- spin_unlock_irq(&mapping->tree_lock);
+
+ memcg = mem_cgroup_begin_page_stat(page);
+ spin_lock_irqsave(&mapping->tree_lock, flags);
+ __delete_from_page_cache(page, NULL, memcg);
+ spin_unlock_irqrestore(&mapping->tree_lock, flags);
+ mem_cgroup_end_page_stat(memcg);
if (freepage)
freepage(page);
@@ -281,7 +293,9 @@ int __filemap_fdatawrite_range(struct address_space *mapping, loff_t start,
if (!mapping_cap_writeback_dirty(mapping))
return 0;
+ wbc_attach_fdatawrite_inode(&wbc, mapping->host);
ret = do_writepages(mapping, &wbc);
+ wbc_detach_inode(&wbc);
return ret;
}
@@ -470,6 +484,8 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
if (!error) {
struct address_space *mapping = old->mapping;
void (*freepage)(struct page *);
+ struct mem_cgroup *memcg;
+ unsigned long flags;
pgoff_t offset = old->index;
freepage = mapping->a_ops->freepage;
@@ -478,15 +494,22 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask)
new->mapping = mapping;
new->index = offset;
- spin_lock_irq(&mapping->tree_lock);
- __delete_from_page_cache(old, NULL);
+ memcg = mem_cgroup_begin_page_stat(old);
+ spin_lock_irqsave(&mapping->tree_lock, flags);
+ __delete_from_page_cache(old, NULL, memcg);
error = radix_tree_insert(&mapping->page_tree, offset, new);
BUG_ON(error);
mapping->nrpages++;
- __inc_zone_page_state(new, NR_FILE_PAGES);
+
+ /*
+ * hugetlb pages do not participate in page cache accounting.
+ */
+ if (!PageHuge(new))
+ __inc_zone_page_state(new, NR_FILE_PAGES);
if (PageSwapBacked(new))
__inc_zone_page_state(new, NR_SHMEM);
- spin_unlock_irq(&mapping->tree_lock);
+ spin_unlock_irqrestore(&mapping->tree_lock, flags);
+ mem_cgroup_end_page_stat(memcg);
mem_cgroup_migrate(old, new, true);
radix_tree_preload_end();
if (freepage)
@@ -575,7 +598,10 @@ static int __add_to_page_cache_locked(struct page *page,
radix_tree_preload_end();
if (unlikely(error))
goto err_insert;
- __inc_zone_page_state(page, NR_FILE_PAGES);
+
+ /* hugetlb pages do not participate in page cache accounting. */
+ if (!huge)
+ __inc_zone_page_state(page, NR_FILE_PAGES);
spin_unlock_irq(&mapping->tree_lock);
if (!huge)
mem_cgroup_commit_charge(page, memcg, false);
@@ -1654,8 +1680,8 @@ no_cached_page:
error = -ENOMEM;
goto out;
}
- error = add_to_page_cache_lru(page, mapping,
- index, GFP_KERNEL);
+ error = add_to_page_cache_lru(page, mapping, index,
+ GFP_KERNEL & mapping_gfp_mask(mapping));
if (error) {
page_cache_release(page);
if (error == -EEXIST) {
@@ -1756,7 +1782,8 @@ static int page_cache_read(struct file *file, pgoff_t offset)
if (!page)
return -ENOMEM;
- ret = add_to_page_cache_lru(page, mapping, offset, GFP_KERNEL);
+ ret = add_to_page_cache_lru(page, mapping, offset,
+ GFP_KERNEL & mapping_gfp_mask(mapping));
if (ret == 0)
ret = mapping->a_ops->readpage(file, page);
else if (ret == -EEXIST)
@@ -2062,7 +2089,7 @@ int filemap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf)
int ret = VM_FAULT_LOCKED;
sb_start_pagefault(inode->i_sb);
- vma_file_update_time(vma);
+ file_update_time(vma->vm_file);
lock_page(page);
if (page->mapping != inode->i_mapping) {
unlock_page(page);
@@ -2536,7 +2563,7 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
/* We can write back this queue in page reclaim */
current->backing_dev_info = inode_to_bdi(inode);
- err = file_remove_suid(file);
+ err = file_remove_privs(file);
if (err)
goto out;
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-01 02:40:01 +0000