From df12ee996378a5917e9555169fe278ecca0612d4 Mon Sep 17 00:00:00 2001 From: Alasdair G Kergon Date: Thu, 9 Apr 2009 00:27:13 +0100 Subject: dm: rearrange dm_wq_work Refactor dm_wq_work() to make later patch more readable. Signed-off-by: Alasdair G Kergon --- drivers/md/dm.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/md/dm.c b/drivers/md/dm.c index ab3b5d84df6..020a9e1993a 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1437,18 +1437,19 @@ static void dm_wq_work(struct work_struct *work) down_write(&md->io_lock); -next_bio: - spin_lock_irq(&md->deferred_lock); - c = bio_list_pop(&md->deferred); - spin_unlock_irq(&md->deferred_lock); + while (1) { + spin_lock_irq(&md->deferred_lock); + c = bio_list_pop(&md->deferred); + spin_unlock_irq(&md->deferred_lock); + + if (!c) { + clear_bit(DMF_BLOCK_IO, &md->flags); + break; + } - if (c) { __split_and_process_bio(md, c); - goto next_bio; } - clear_bit(DMF_BLOCK_IO, &md->flags); - up_write(&md->io_lock); } -- cgit v1.2.3-70-g09d2