On Thu, Jun 30, 2011 at 02:15:58PM +0200, Jan Kara wrote: > Yes. Actually, specifically for filesystems like XFS which update inode > after IO completion we would need more passes to be efficient and correct: > for all inodes > fdatawrite > for all inodes > fdatawait > for all inodes > write_inode > for all inodes > wait for inode IO > > But maybe this could be handled by having new WB_SYNC_ mode indicating > that writeback_single_inode() should not bother waiting (thus we'd really > end up waiting in sync_inodes_sb()) and then XFS and other filesystems that > need it would writeout inodes in their sync_fs() implementation (possibly > using a generic helper)? We do very little in write_inode these days. Basically just log the inode size and timestamp sized into the in-memory log. The actual writeout of the log happens in ->sync_fs already. -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
