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mm: count reclaimable pages per BDI

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Count per BDI reclaimable pages; nr_reclaimable = nr_dirty + nr_unstable.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peter Zijlstra 2007-10-16 23:25:47 -07:00 • committed by Linus Torvalds
parent b2e8fb6efa
commit c9e51e4180
5 changed files with 16 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

2
fs/buffer.c
View file

@ -710,6 +710,8 @@ static int __set_page_dirty(struct page *page,
if (mapping_cap_account_dirty(mapping)) { if (mapping_cap_account_dirty(mapping)) {
__inc_zone_page_state(page, NR_FILE_DIRTY); __inc_zone_page_state(page, NR_FILE_DIRTY);
__inc_bdi_stat(mapping->backing_dev_info,
BDI_RECLAIMABLE);
task_io_account_write(PAGE_CACHE_SIZE); task_io_account_write(PAGE_CACHE_SIZE);
} }
radix_tree_tag_set(&mapping->page_tree, radix_tree_tag_set(&mapping->page_tree,

7
fs/nfs/write.c
View file

@ -447,6 +447,7 @@ nfs_mark_request_commit(struct nfs_page *req)
NFS_PAGE_TAG_COMMIT); NFS_PAGE_TAG_COMMIT);
spin_unlock(&inode->i_lock); spin_unlock(&inode->i_lock);
inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
inc_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE);
__mark_inode_dirty(inode, I_DIRTY_DATASYNC); __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
} }
@ -533,6 +534,8 @@ static void nfs_cancel_commit_list(struct list_head *head)
while(!list_empty(head)) { while(!list_empty(head)) {
req = nfs_list_entry(head->next); req = nfs_list_entry(head->next);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
dec_bdi_stat(req->wb_page->mapping->backing_dev_info,
BDI_RECLAIMABLE);
nfs_list_remove_request(req); nfs_list_remove_request(req);
clear_bit(PG_NEED_COMMIT, &(req)->wb_flags); clear_bit(PG_NEED_COMMIT, &(req)->wb_flags);
nfs_inode_remove_request(req); nfs_inode_remove_request(req);
@ -1193,6 +1196,8 @@ nfs_commit_list(struct inode *inode, struct list_head *head, int how)
nfs_list_remove_request(req); nfs_list_remove_request(req);
nfs_mark_request_commit(req); nfs_mark_request_commit(req);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
dec_bdi_stat(req->wb_page->mapping->backing_dev_info,
BDI_RECLAIMABLE);
nfs_clear_page_tag_locked(req); nfs_clear_page_tag_locked(req);
} }
return -ENOMEM; return -ENOMEM;
@ -1218,6 +1223,8 @@ static void nfs_commit_done(struct rpc_task *task, void *calldata)
nfs_list_remove_request(req); nfs_list_remove_request(req);
clear_bit(PG_NEED_COMMIT, &(req)->wb_flags); clear_bit(PG_NEED_COMMIT, &(req)->wb_flags);
dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS); dec_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
dec_bdi_stat(req->wb_page->mapping->backing_dev_info,
BDI_RECLAIMABLE);
dprintk("NFS: commit (%s/%Ld %d@%Ld)", dprintk("NFS: commit (%s/%Ld %d@%Ld)",
req->wb_context->path.dentry->d_inode->i_sb->s_id, req->wb_context->path.dentry->d_inode->i_sb->s_id,

1
include/linux/backing-dev.h
View file

@ -27,6 +27,7 @@ enum bdi_state {
typedef int (congested_fn)(void *, int); typedef int (congested_fn)(void *, int);
enum bdi_stat_item { enum bdi_stat_item {
BDI_RECLAIMABLE,
NR_BDI_STAT_ITEMS NR_BDI_STAT_ITEMS
}; };

4
mm/page-writeback.c
View file

@ -827,6 +827,8 @@ int __set_page_dirty_nobuffers(struct page *page)
WARN_ON_ONCE(!PagePrivate(page) && !PageUptodate(page)); WARN_ON_ONCE(!PagePrivate(page) && !PageUptodate(page));
if (mapping_cap_account_dirty(mapping)) { if (mapping_cap_account_dirty(mapping)) {
__inc_zone_page_state(page, NR_FILE_DIRTY); __inc_zone_page_state(page, NR_FILE_DIRTY);
__inc_bdi_stat(mapping->backing_dev_info,
BDI_RECLAIMABLE);
task_io_account_write(PAGE_CACHE_SIZE); task_io_account_write(PAGE_CACHE_SIZE);
} }
radix_tree_tag_set(&mapping->page_tree, radix_tree_tag_set(&mapping->page_tree,
@ -961,6 +963,8 @@ int clear_page_dirty_for_io(struct page *page)
*/ */
if (TestClearPageDirty(page)) { if (TestClearPageDirty(page)) {
dec_zone_page_state(page, NR_FILE_DIRTY); dec_zone_page_state(page, NR_FILE_DIRTY);
dec_bdi_stat(mapping->backing_dev_info,
BDI_RECLAIMABLE);
return 1; return 1;
} }
return 0; return 0;

2
mm/truncate.c
View file

@ -72,6 +72,8 @@ void cancel_dirty_page(struct page *page, unsigned int account_size)
struct address_space *mapping = page->mapping; struct address_space *mapping = page->mapping;
if (mapping && mapping_cap_account_dirty(mapping)) { if (mapping && mapping_cap_account_dirty(mapping)) {
dec_zone_page_state(page, NR_FILE_DIRTY); dec_zone_page_state(page, NR_FILE_DIRTY);
dec_bdi_stat(mapping->backing_dev_info,
BDI_RECLAIMABLE);
if (account_size) if (account_size)
task_io_account_cancelled_write(account_size); task_io_account_cancelled_write(account_size);
} }