bdi: replace BDI_CAP_NO_{WRITEBACK,ACCT_DIRTY} with a single flag
Replace the two negative flags that are always used together with a
single positive flag that indicates the writeback capability instead
of two related non-capabilities. Also remove the pointless wrappers
to just check the flag.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 0139f96..358d6f2 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -1882,7 +1882,7 @@ void balance_dirty_pages_ratelimited(struct address_space *mapping)
int ratelimit;
int *p;
- if (!bdi_cap_account_dirty(bdi))
+ if (!(bdi->capabilities & BDI_CAP_WRITEBACK))
return;
if (inode_cgwb_enabled(inode))
@@ -2423,7 +2423,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping)
trace_writeback_dirty_page(page, mapping);
- if (mapping_cap_account_dirty(mapping)) {
+ if (mapping_can_writeback(mapping)) {
struct bdi_writeback *wb;
inode_attach_wb(inode, page);
@@ -2450,7 +2450,7 @@ void account_page_dirtied(struct page *page, struct address_space *mapping)
void account_page_cleaned(struct page *page, struct address_space *mapping,
struct bdi_writeback *wb)
{
- if (mapping_cap_account_dirty(mapping)) {
+ if (mapping_can_writeback(mapping)) {
dec_lruvec_page_state(page, NR_FILE_DIRTY);
dec_zone_page_state(page, NR_ZONE_WRITE_PENDING);
dec_wb_stat(wb, WB_RECLAIMABLE);
@@ -2513,7 +2513,7 @@ void account_page_redirty(struct page *page)
{
struct address_space *mapping = page->mapping;
- if (mapping && mapping_cap_account_dirty(mapping)) {
+ if (mapping && mapping_can_writeback(mapping)) {
struct inode *inode = mapping->host;
struct bdi_writeback *wb;
struct wb_lock_cookie cookie = {};
@@ -2625,7 +2625,7 @@ void __cancel_dirty_page(struct page *page)
{
struct address_space *mapping = page_mapping(page);
- if (mapping_cap_account_dirty(mapping)) {
+ if (mapping_can_writeback(mapping)) {
struct inode *inode = mapping->host;
struct bdi_writeback *wb;
struct wb_lock_cookie cookie = {};
@@ -2665,7 +2665,7 @@ int clear_page_dirty_for_io(struct page *page)
VM_BUG_ON_PAGE(!PageLocked(page), page);
- if (mapping && mapping_cap_account_dirty(mapping)) {
+ if (mapping && mapping_can_writeback(mapping)) {
struct inode *inode = mapping->host;
struct bdi_writeback *wb;
struct wb_lock_cookie cookie = {};