Commit 252aa6f5 authored by Rafael Aquini's avatar Rafael Aquini Committed by Linus Torvalds
Browse files

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 (->private_data).

Signed-off-by: default avatarRafael Aquini <aquini@redhat.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Minchan Kim <minchan@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 78bd5209

fs/buffer.c

+6 −6
Original line number Diff line number Diff line
@@ -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)) {

fs/gfs2/glock.c

+1 −1
Original line number Diff line number Diff line
@@ -768,7 +768,7 @@ 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;

	}

fs/inode.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

fs/nilfs2/page.c

+1 −1
Original line number Diff line number Diff line
@@ -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;

}

include/linux/fs.h

+1 −1
Original line number Diff line number Diff line
@@ -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

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