Commit 10273170 authored Feb 14, 2017 by Ming Lei Committed by Shaohua Li Feb 15, 2017

md: fail if mddev->bio_set can't be created



The current behaviour is to fall back to allocate
bio from 'fs_bio_set', that isn't a correct way
because it might cause deadlock.

So this patch simply return failure if mddev->bio_set
can't be created.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Shaohua Li <shli@fb.com>

parent c18a1e09

drivers/md/md.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -5228,8 +5228,11 @@ int md_run(struct mddev *mddev)
		sysfs_notify_dirent_safe(rdev->sysfs_state);
		}

		if (mddev->bio_set == NULL)
		if (mddev->bio_set == NULL) {
		mddev->bio_set = bioset_create(BIO_POOL_SIZE, 0);
		if (!mddev->bio_set)
		return -ENOMEM;
		}

		spin_lock(&pers_lock);
		pers = find_pers(mddev->level, mddev->clevel);