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authorChristoph Hellwig <hch@lst.de>2015-01-14 12:42:36 +0300
committerJens Axboe <axboe@fb.com>2015-01-21 00:03:04 +0300
commitde1414a654e66b81b5348dbc5259ecf2fb61655e (patch)
tree2b3d60d6c0dc87ba33caff3e326d5648831d6176 /mm/vmscan.c
parent26ff13047e3dc6c0230a629867e8dbd4a15a7626 (diff)
downloadlinux-de1414a654e66b81b5348dbc5259ecf2fb61655e.tar.xz
fs: export inode_to_bdi and use it in favor of mapping->backing_dev_info
Now that we got rid of the bdi abuse on character devices we can always use sb->s_bdi to get at the backing_dev_info for a file, except for the block device special case. Export inode_to_bdi and replace uses of mapping->backing_dev_info with it to prepare for the removal of mapping->backing_dev_info. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Tejun Heo <tj@kernel.org> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'mm/vmscan.c')
-rw-r--r--mm/vmscan.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index ab2505c3ef54..e00a16393f21 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -497,7 +497,7 @@ static pageout_t pageout(struct page *page, struct address_space *mapping,
}
if (mapping->a_ops->writepage == NULL)
return PAGE_ACTIVATE;
- if (!may_write_to_queue(mapping->backing_dev_info, sc))
+ if (!may_write_to_queue(inode_to_bdi(mapping->host), sc))
return PAGE_KEEP;
if (clear_page_dirty_for_io(page)) {
@@ -876,7 +876,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
*/
mapping = page_mapping(page);
if (((dirty || writeback) && mapping &&
- bdi_write_congested(mapping->backing_dev_info)) ||
+ bdi_write_congested(inode_to_bdi(mapping->host))) ||
(writeback && PageReclaim(page)))
nr_congested++;