On Mon, Jan 29, 2018 at 07:43:48PM -0500, Jerome Glisse wrote: > I started a patchset about $TOPIC a while ago, right now i am working on other > thing but i hope to have an RFC for $TOPIC before LSF/MM and thus would like a > slot during common track to talk about it as it impacts FS, BLOCK and MM (i am > assuming their will be common track). > > Idea is that mapping (struct address_space) is available in virtualy all the > places where it is needed and that their should be no reasons to depend only on > struct page->mapping field. My patchset basicly add mapping to a bunch of vfs > callback (struct address_space_operations) where it is missing, changing call > site. Then i do an individual patch per filesystem to leverage the new argument > instead on struct page. Oh? What about the places like fs/coda? Or block devices, for that matter... You can't count upon file->f_mapping->host == file_inode(file).
