From: Christoph Hellwig Date: Wed, 11 Jan 2006 04:40:13 +0000 (+1100) Subject: [XFS] Initial pass at going directly-to-bio on the buffered IO path. This X-Git-Tag: v2.6.16-rc1~185^2~18 X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f6d6d4fcd180f8e47bf6b13fc6cce1e6c156d0ea;p=pandora-kernel.git [XFS] Initial pass at going directly-to-bio on the buffered IO path. This allows us to submit much larger I/Os instead of sending down lots of small buffer_heads. To do this we need to have a rather complicated I/O submission and completion tracking infrastructure. Part of the latter has been merged already a long time ago for direct I/O support. Part of the problem is that we need to track sub-pagesize regions and for that we still need buffer_heads for the time beeing. Long-term I hope we can move to better data strucutures and/or maybe move this to fs/mpage.c instead of having it in XFS. Original patch from Nathan Scott with various updates from David Chinner and Christoph Hellwig. SGI-PV: 947118 SGI-Modid: xfs-linux-melb:xfs-kern:203822a Signed-off-by: Christoph Hellwig Signed-off-by: Nathan Scott --- Reading git-diff-tree failed