From: Rafael Aquini Date: Fri, 9 Nov 2012 03:04:30 +0000 (+1100) Subject: mm: redefine address_space.assoc_mapping X-Git-Tag: next-20121112~5^2~156 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=30a1af5cc3d6e2cf948def8b65ec692a6a4899c0;p=karo-tx-linux.git mm: redefine address_space.assoc_mapping Overhaul struct address_space.assoc_mapping renaming it to address_space.private_data and its type is redefined to void*. By this approach we consistently name the .private_* elements from struct address_space as well as allow extended usage for address_space association with other data structures through ->private_data. Also, all users of old ->assoc_mapping element are converted to reflect its new name and type change. Signed-off-by: Rafael Aquini Cc: Rusty Russell Cc: "Michael S. Tsirkin" Cc: Rik van Riel Cc: Mel Gorman Cc: Andi Kleen Cc: Konrad Rzeszutek Wilk Cc: Minchan Kim Signed-off-by: Andrew Morton --- diff --git a/fs/buffer.c b/fs/buffer.c index b5f044283edb..e0bad956138f 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -555,7 +555,7 @@ void emergency_thaw_all(void) */ int sync_mapping_buffers(struct address_space *mapping) { - struct address_space *buffer_mapping = mapping->assoc_mapping; + struct address_space *buffer_mapping = mapping->private_data; if (buffer_mapping == NULL || list_empty(&mapping->private_list)) return 0; @@ -588,10 +588,10 @@ void mark_buffer_dirty_inode(struct buffer_head *bh, struct inode *inode) struct address_space *buffer_mapping = bh->b_page->mapping; mark_buffer_dirty(bh); - if (!mapping->assoc_mapping) { - mapping->assoc_mapping = buffer_mapping; + if (!mapping->private_data) { + mapping->private_data = buffer_mapping; } else { - BUG_ON(mapping->assoc_mapping != buffer_mapping); + BUG_ON(mapping->private_data != buffer_mapping); } if (!bh->b_assoc_map) { spin_lock(&buffer_mapping->private_lock); @@ -788,7 +788,7 @@ void invalidate_inode_buffers(struct inode *inode) if (inode_has_buffers(inode)) { struct address_space *mapping = &inode->i_data; struct list_head *list = &mapping->private_list; - struct address_space *buffer_mapping = mapping->assoc_mapping; + struct address_space *buffer_mapping = mapping->private_data; spin_lock(&buffer_mapping->private_lock); while (!list_empty(list)) @@ -811,7 +811,7 @@ int remove_inode_buffers(struct inode *inode) if (inode_has_buffers(inode)) { struct address_space *mapping = &inode->i_data; struct list_head *list = &mapping->private_list; - struct address_space *buffer_mapping = mapping->assoc_mapping; + struct address_space *buffer_mapping = mapping->private_data; spin_lock(&buffer_mapping->private_lock); while (!list_empty(list)) { diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 6114571a979a..904a8082267d 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -766,7 +766,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number, mapping->host = s->s_bdev->bd_inode; mapping->flags = 0; mapping_set_gfp_mask(mapping, GFP_NOFS); - mapping->assoc_mapping = NULL; + mapping->private_data = NULL; mapping->backing_dev_info = s->s_bdi; mapping->writeback_index = 0; } diff --git a/fs/inode.c b/fs/inode.c index b03c71957246..4cac8e139e72 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -165,7 +165,7 @@ int inode_init_always(struct super_block *sb, struct inode *inode) mapping->host = inode; mapping->flags = 0; mapping_set_gfp_mask(mapping, GFP_HIGHUSER_MOVABLE); - mapping->assoc_mapping = NULL; + mapping->private_data = NULL; mapping->backing_dev_info = &default_backing_dev_info; mapping->writeback_index = 0; diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c index 3e7b2a0dc0c8..07f76db04ec7 100644 --- a/fs/nilfs2/page.c +++ b/fs/nilfs2/page.c @@ -431,7 +431,7 @@ void nilfs_mapping_init(struct address_space *mapping, struct inode *inode, mapping->host = inode; mapping->flags = 0; mapping_set_gfp_mask(mapping, GFP_NOFS); - mapping->assoc_mapping = NULL; + mapping->private_data = NULL; mapping->backing_dev_info = bdi; mapping->a_ops = &empty_aops; } diff --git a/include/linux/fs.h b/include/linux/fs.h index 8967baac255c..21e993846c0b 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -418,7 +418,7 @@ struct address_space { struct backing_dev_info *backing_dev_info; /* device readahead, etc */ spinlock_t private_lock; /* for use by the address_space */ struct list_head private_list; /* ditto */ - struct address_space *assoc_mapping; /* ditto */ + void *private_data; /* ditto */ } __attribute__((aligned(sizeof(long)))); /* * On most architectures that alignment is already the case; but