Count per BDI reclaimable pages; nr_reclaimable = nr_dirty + nr_unstable.
Signed-off-by: Peter Zijlstra <[email protected]>
---
fs/buffer.c | 2 ++
fs/nfs/write.c | 7 +++++++
include/linux/backing-dev.h | 1 +
mm/page-writeback.c | 4 ++++
mm/truncate.c | 2 ++
5 files changed, 16 insertions(+)
Index: linux-2.6/fs/buffer.c
===================================================================
--- linux-2.6.orig/fs/buffer.c 2007-04-20 15:20:48.000000000 +0200
+++ linux-2.6/fs/buffer.c 2007-04-20 15:26:31.000000000 +0200
@@ -740,6 +740,8 @@ int __set_page_dirty_buffers(struct page
if (page->mapping) { /* Race with truncate? */
if (mapping_cap_account_dirty(mapping)) {
__inc_zone_page_state(page, NR_FILE_DIRTY);
+ __inc_bdi_stat(mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
task_io_account_write(PAGE_CACHE_SIZE);
}
radix_tree_tag_set(&mapping->page_tree,
Index: linux-2.6/mm/page-writeback.c
===================================================================
--- linux-2.6.orig/mm/page-writeback.c 2007-04-20 15:20:48.000000000 +0200
+++ linux-2.6/mm/page-writeback.c 2007-04-20 15:27:28.000000000 +0200
@@ -828,6 +828,8 @@ int __set_page_dirty_nobuffers(struct pa
BUG_ON(mapping2 != mapping);
if (mapping_cap_account_dirty(mapping)) {
__inc_zone_page_state(page, NR_FILE_DIRTY);
+ __inc_bdi_stat(mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
task_io_account_write(PAGE_CACHE_SIZE);
}
radix_tree_tag_set(&mapping->page_tree,
@@ -961,6 +963,8 @@ int clear_page_dirty_for_io(struct page
*/
if (TestClearPageDirty(page)) {
dec_zone_page_state(page, NR_FILE_DIRTY);
+ dec_bdi_stat(mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
return 1;
}
return 0;
Index: linux-2.6/mm/truncate.c
===================================================================
--- linux-2.6.orig/mm/truncate.c 2007-04-20 15:20:48.000000000 +0200
+++ linux-2.6/mm/truncate.c 2007-04-20 15:27:38.000000000 +0200
@@ -71,6 +71,8 @@ void cancel_dirty_page(struct page *page
struct address_space *mapping = page->mapping;
if (mapping && mapping_cap_account_dirty(mapping)) {
dec_zone_page_state(page, NR_FILE_DIRTY);
+ dec_bdi_stat(mapping->backing_dev_info,
+ BDI_RECLAIMABLE);
if (account_size)
task_io_account_cancelled_write(account_size);
}
Index: linux-2.6/fs/nfs/write.c
===================================================================
--- linux-2.6.orig/fs/nfs/write.c 2007-04-20 15:20:05.000000000 +0200
+++ linux-2.6/fs/nfs/write.c 2007-04-20 15:27:07.000000000 +0200
@@ -449,6 +449,7 @@ nfs_mark_request_commit(struct nfs_page
nfsi->ncommit++;
spin_unlock(&nfsi->req_lock);
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);
}
#endif
@@ -509,6 +510,8 @@ static void nfs_cancel_commit_list(struc
while(!list_empty(head)) {
req = nfs_list_entry(head->next);
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_inode_remove_request(req);
nfs_unlock_request(req);
@@ -1234,6 +1237,8 @@ nfs_commit_list(struct inode *inode, str
nfs_list_remove_request(req);
nfs_mark_request_commit(req);
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_writeback(req);
}
return -ENOMEM;
@@ -1258,6 +1263,8 @@ static void nfs_commit_done(struct rpc_t
req = nfs_list_entry(data->pages.next);
nfs_list_remove_request(req);
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)",
req->wb_context->dentry->d_inode->i_sb->s_id,
Index: linux-2.6/include/linux/backing-dev.h
===================================================================
--- linux-2.6.orig/include/linux/backing-dev.h 2007-04-20 15:20:48.000000000 +0200
+++ linux-2.6/include/linux/backing-dev.h 2007-04-20 15:25:47.000000000 +0200
@@ -26,6 +26,7 @@ enum bdi_state {
typedef int (congested_fn)(void *, int);
enum bdi_stat_item {
+ BDI_RECLAIMABLE,
NR_BDI_STAT_ITEMS
};
--
-
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