xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

[XFS] Initial pass at going directly-to-bio on the buffered IO path. This

Browse Source 
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 <hch@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
Christoph Hellwig
2006-01-11 15:40:13 +11:00
committed by Nathan Scott
parent ce8e922c0e
commit f6d6d4fcd1
4 changed files with 431 additions and 364 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
fs/xfs/linux-2.6/xfs_linux.h
View File

@@ -110,10 +110,6 @@
* delalloc and these ondisk-uninitialised buffers.
*/
BUFFER_FNS(PrivateStart, unwritten);
static inline void set_buffer_unwritten_io(struct buffer_head *bh)
{
bh->b_end_io = linvfs_unwritten_done;
}
#define restricted_chown xfs_params.restrict_chown.val
#define irix_sgid_inherit xfs_params.sgid_inherit.val