diff options
Diffstat (limited to 'mm/backing-dev.c')
| -rw-r--r-- | mm/backing-dev.c | 28 |
1 files changed, 11 insertions, 17 deletions
diff --git a/mm/backing-dev.c b/mm/backing-dev.c index 4e9ed2a8521..327e36d1d62 100644 --- a/mm/backing-dev.c +++ b/mm/backing-dev.c @@ -331,8 +331,8 @@ static int bdi_forker_thread(void *ptr) set_user_nice(current, 0); for (;;) { + struct task_struct *task; struct backing_dev_info *bdi, *tmp; - struct bdi_writeback *wb; /* * Temporary measure, we want to make sure we don't see @@ -383,29 +383,23 @@ static int bdi_forker_thread(void *ptr) list_del_init(&bdi->bdi_list); spin_unlock_bh(&bdi_lock); - wb = &bdi->wb; - wb->task = kthread_run(bdi_writeback_thread, wb, "flush-%s", - dev_name(bdi->dev)); - /* - * If thread creation fails, then readd the bdi to - * the pending list and force writeout of the bdi - * from this forker thread. That will free some memory - * and we can try again. - */ - if (IS_ERR(wb->task)) { - wb->task = NULL; - + task = kthread_run(bdi_writeback_thread, &bdi->wb, "flush-%s", + dev_name(bdi->dev)); + if (IS_ERR(task)) { /* - * Add this 'bdi' to the back, so we get - * a chance to flush other bdi's to free - * memory. + * If thread creation fails, then readd the bdi back to + * the list and force writeout of the bdi from this + * forker thread. That will free some memory and we can + * try again. Add it to the tail so we get a chance to + * flush other bdi's to free memory. */ spin_lock_bh(&bdi_lock); list_add_tail(&bdi->bdi_list, &bdi_pending_list); spin_unlock_bh(&bdi_lock); bdi_flush_io(bdi); - } + } else + bdi->wb.task = task; } return 0; |