[PATCH 08/11] block: return errors from disk_alloc_events
From: Christoph Hellwig <hch@lst.de>
Date: 2021-08-18 14:54:55
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
From: Luis Chamberlain <mcgrof@kernel.org> Prepare for proper error handling in add_disk. Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> [hch: split from a larger patch] Signed-off-by: Christoph Hellwig <hch@lst.de> --- block/blk.h | 2 +- block/disk-events.c | 7 ++++--- 2 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/block/blk.h b/block/blk.h
index c9727dd56da7..bbbcc1a64a2d 100644
--- a/block/blk.h
+++ b/block/blk.h@@ -362,7 +362,7 @@ int bio_add_hw_page(struct request_queue *q, struct bio *bio, struct request_queue *blk_alloc_queue(int node_id); -void disk_alloc_events(struct gendisk *disk); +int disk_alloc_events(struct gendisk *disk); void disk_add_events(struct gendisk *disk); void disk_del_events(struct gendisk *disk); void disk_release_events(struct gendisk *disk);
diff --git a/block/disk-events.c b/block/disk-events.c
index 7445b8ff2775..8d5496e7592a 100644
--- a/block/disk-events.c
+++ b/block/disk-events.c@@ -444,17 +444,17 @@ module_param_cb(events_dfl_poll_msecs, &disk_events_dfl_poll_msecs_param_ops, /* * disk_{alloc|add|del|release}_events - initialize and destroy disk_events. */ -void disk_alloc_events(struct gendisk *disk) +int disk_alloc_events(struct gendisk *disk) { struct disk_events *ev; if (!disk->fops->check_events || !disk->events) - return; + return 0; ev = kzalloc(sizeof(*ev), GFP_KERNEL); if (!ev) { pr_warn("%s: failed to initialize events\n", disk->disk_name); - return; + return -ENOMEM; } INIT_LIST_HEAD(&ev->node);
@@ -466,6 +466,7 @@ void disk_alloc_events(struct gendisk *disk) INIT_DELAYED_WORK(&ev->dwork, disk_events_workfn); disk->ev = ev; + return 0; } void disk_add_events(struct gendisk *disk)
--
2.30.2