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authorChristoph Hellwig <hch@lst.de>2015-01-14 10:42:36 +0100
committerJens Axboe <axboe@fb.com>2015-01-20 14:03:04 -0700
commitde1414a654e66b81b5348dbc5259ecf2fb61655e (patch)
tree2b3d60d6c0dc87ba33caff3e326d5648831d6176 /mm/filemap.c
parent26ff13047e3dc6c0230a629867e8dbd4a15a7626 (diff)
downloadblackbird-op-linux-de1414a654e66b81b5348dbc5259ecf2fb61655e.tar.gz
blackbird-op-linux-de1414a654e66b81b5348dbc5259ecf2fb61655e.zip
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/filemap.c')
-rw-r--r--mm/filemap.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/filemap.c b/mm/filemap.c
index 673e4581a2e5..5d7c23c26f81 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -211,7 +211,7 @@ void __delete_from_page_cache(struct page *page, void *shadow)
*/
if (PageDirty(page) && mapping_cap_account_dirty(mapping)) {
dec_zone_page_state(page, NR_FILE_DIRTY);
- dec_bdi_stat(mapping->backing_dev_info, BDI_RECLAIMABLE);
+ dec_bdi_stat(inode_to_bdi(mapping->host), BDI_RECLAIMABLE);
}
}
@@ -2565,7 +2565,7 @@ ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
size_t count = iov_iter_count(from);
/* We can write back this queue in page reclaim */
- current->backing_dev_info = mapping->backing_dev_info;
+ current->backing_dev_info = inode_to_bdi(inode);
err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
if (err)
goto out;
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