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authorJens Axboe <jens.axboe@oracle.com>2009-09-16 15:13:54 +0200
committerJens Axboe <jens.axboe@oracle.com>2009-09-16 15:18:52 +0200
commitb6e51316daede0633e9274e1e30391cfa4747877 (patch)
tree664476bb4e7c05dcce3ad908363b482134c68429 /mm
parentbcddc3f01c9122882c8b9f12ab94a934e55aef97 (diff)
downloadop-kernel-dev-b6e51316daede0633e9274e1e30391cfa4747877.zip
op-kernel-dev-b6e51316daede0633e9274e1e30391cfa4747877.tar.gz
writeback: separate starting of sync vs opportunistic writeback
bdi_start_writeback() is currently split into two paths, one for WB_SYNC_NONE and one for WB_SYNC_ALL. Add bdi_sync_writeback() for WB_SYNC_ALL writeback and let bdi_start_writeback() handle only WB_SYNC_NONE. Push down the writeback_control allocation and only accept the parameters that make sense for each function. This cleans up the API considerably. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'mm')
-rw-r--r--mm/page-writeback.c12
1 files changed, 2 insertions, 10 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 12c3d843..1eea4fa 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -582,16 +582,8 @@ static void balance_dirty_pages(struct address_space *mapping)
if ((laptop_mode && pages_written) ||
(!laptop_mode && ((nr_writeback = global_page_state(NR_FILE_DIRTY)
+ global_page_state(NR_UNSTABLE_NFS))
- > background_thresh))) {
- struct writeback_control wbc = {
- .bdi = bdi,
- .sync_mode = WB_SYNC_NONE,
- .nr_to_write = nr_writeback,
- };
-
-
- bdi_start_writeback(&wbc);
- }
+ > background_thresh)))
+ bdi_start_writeback(bdi, nr_writeback);
}
void set_page_dirty_balance(struct page *page, int page_mkwrite)
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