From f17625b318d9b151e7bd41e31223e9d89b2aaa77 Mon Sep 17 00:00:00 2001 From: Jens Axboe Date: Tue, 1 Jun 2010 11:05:22 +0200 Subject: [PATCH] Revert "writeback: ensure that WB_SYNC_NONE writeback with sb pinned is sync" This reverts commit 7c8a3554c683f512dbcee26faedb42e4c05f12fa. We are investigating a hang associated with the WB_SYNC_NONE changes, so revert them for now. Signed-off-by: Jens Axboe --- fs/fs-writeback.c | 16 +++++----------- 1 file changed, 5 insertions(+), 11 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 5c4161f1fd9a..6753912641b4 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -193,8 +193,7 @@ static void bdi_wait_on_work_clear(struct bdi_work *work) } static void bdi_alloc_queue_work(struct backing_dev_info *bdi, - struct wb_writeback_args *args, - int wait) + struct wb_writeback_args *args) { struct bdi_work *work; @@ -206,8 +205,6 @@ static void bdi_alloc_queue_work(struct backing_dev_info *bdi, if (work) { bdi_work_init(work, args); bdi_queue_work(bdi, work); - if (wait) - bdi_wait_on_work_clear(work); } else { struct bdi_writeback *wb = &bdi->wb; @@ -282,7 +279,7 @@ void bdi_start_writeback(struct backing_dev_info *bdi, struct super_block *sb, args.for_background = 1; } - bdi_alloc_queue_work(bdi, &args, sb_locked); + bdi_alloc_queue_work(bdi, &args); } /* @@ -912,7 +909,6 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait) while ((work = get_next_work_item(bdi, wb)) != NULL) { struct wb_writeback_args args = work->args; - int post_clear; /* * Override sync mode, in case we must wait for completion @@ -920,13 +916,11 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait) if (force_wait) work->args.sync_mode = args.sync_mode = WB_SYNC_ALL; - post_clear = WB_SYNC_ALL || args.sb_pinned; - /* * If this isn't a data integrity operation, just notify * that we have seen this work and we are now starting it. */ - if (!post_clear) + if (args.sync_mode == WB_SYNC_NONE) wb_clear_pending(wb, work); wrote += wb_writeback(wb, &args); @@ -935,7 +929,7 @@ long wb_do_writeback(struct bdi_writeback *wb, int force_wait) * This is a data integrity writeback, so only do the * notification when we have completed the work. */ - if (post_clear) + if (args.sync_mode == WB_SYNC_ALL) wb_clear_pending(wb, work); } @@ -1011,7 +1005,7 @@ static void bdi_writeback_all(struct super_block *sb, long nr_pages) if (!bdi_has_dirty_io(bdi)) continue; - bdi_alloc_queue_work(bdi, &args, 0); + bdi_alloc_queue_work(bdi, &args); } rcu_read_unlock(); -- 2.34.1