Re: [Ext2-devel] [RFC 0/13] extents and 48bit ext3
Andrew Morton <[email protected]>
| Newsgroups | gmane.linux.file-systems,gmane.comp.file-systems.ext2.devel,gmane.linux.kernel |
|---|---|
| Message-ID | <[email protected]> |
On Fri, 9 Jun 2006 09:25:57 -0700 (PDT) Linus Torvalds <[email protected]> wrote: > (buffer heads! In 2006!) We should be able to make the vast majority of those go away, btw. We already have `-o data=writeback,nobh'. That gives us writeback-mode with no buffer_heads on the pagecache. On top of that we can implement nobh ordered-mode by adding an inode walk which calls do_sync_file_range() into the appropriate place in commit. The tricky part is the inode walk - at present super_block.s_list is a list_head and it's not trivial to walk that without missing some inodes. Probably it could be done via a new fs-private dirty-inode list which we hande carefully, or via a walk of an i_ino-ordered radix-tree, which doesn't miss things. I floated this a year or so ago, but no little fishies bit. - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html