Messages in this thread | | | Date | Mon, 26 Apr 2010 19:02:48 +0200 | From | Jens Axboe <> | Subject | Re: [PATCH 2/2] [MTD] Call bdi_init() and bdi_register() |
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On Mon, Apr 26 2010, Jörn Engel wrote: > Otherwise we hit a BUG_ON in bdi_queue_work(). > > Signed-off-by: Joern Engel <joern@logfs.org> > --- > drivers/mtd/mtdcore.c | 17 ++++++++++++++++- > 1 files changed, 16 insertions(+), 1 deletions(-) > > diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c > index cb4858b..8dd3e46 100644 > --- a/drivers/mtd/mtdcore.c > +++ b/drivers/mtd/mtdcore.c > @@ -322,6 +322,12 @@ int add_mtd_device(struct mtd_info *mtd) > if (!mtd_table[i]) { > struct mtd_notifier *not; > > + err = bdi_register(mtd->backing_dev_info, NULL, "mtd%d", > + i); > + if (err) { > + /* We lose the errno information :( */ > + break; > + }
This is not a good idea, even if it'll currently work.
> @@ -692,6 +698,15 @@ static int __init init_mtd(void) > int ret; > ret = class_register(&mtd_class); > > + ret = bdi_init(&mtd_bdi_unmappable); > + if (ret) > + return ret; > + ret = bdi_init(&mtd_bdi_ro_mappable); > + if (ret) > + return ret; > + ret = bdi_init(&mtd_bdi_rw_mappable); > + if (ret) > + return ret;
Do the bdi_register() here as well.
-- Jens Axboe
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