From: Josef Bacik
The only reason we pass in the mapping is to get the inode in order to see if
writeback cgroups is enabled, and even then it only checks the bdi and a super
block flag. balance_dirty_pages() doesn't even use the mapping. Since
balance_dirty_pages*() works on a bdi level, just
The only reason we pass in the mapping is to get the inode in order to see if
writeback cgroups is enabled, and even then it only checks the bdi and a super
block flag. balance_dirty_pages() doesn't even use the mapping. Since
balance_dirty_pages*() works on a bdi level, just pass in the bdi and