On Wed, 30 Mar 2011 13:07:46 +0200, Jens Axboe <[email protected]> wrote: > On 2011-03-30 06:25, Ryusuke Konishi wrote: > > diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c > > index 4d2a1ee..9d2dc6b 100644 > > --- a/fs/nilfs2/page.c > > +++ b/fs/nilfs2/page.c > > @@ -495,12 +495,14 @@ unsigned nilfs_page_count_clean_buffers(struct page > > *page, > > void nilfs_mapping_init(struct address_space *mapping, > > struct backing_dev_info *bdi) > > { > > + static const struct address_space_operations empty_aops; > > + > > mapping->host = NULL; > > mapping->flags = 0; > > mapping_set_gfp_mask(mapping, GFP_NOFS); > > mapping->assoc_mapping = NULL; > > mapping->backing_dev_info = bdi; > > - mapping->a_ops = NULL; > > + mapping->a_ops = &empty_aops; > > } > > Hmm wait, inode init should set the mapping aops to an empty type > already. Does the OOPS go away if you just remove the mapping->a_ops = > NULL assignment? > > -- > Jens Axboe
Nilfs has two mappings in each inode, one for data pages and another for btree nodes. The aops initialization is neede for the latter one. Ryusuke Konishi -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
