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[PATCH] Add vector AIO support

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This work is initially done by Zach Brown to add support for vectored aio.
These are the core changes for AIO to support
IOCB_CMD_PREADV/IOCB_CMD_PWRITEV.

[akpm@osdl.org: huge build fix]
Signed-off-by: Zach Brown <zach.brown@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Acked-by: Benjamin LaHaise <bcrl@kvack.org>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Badari Pulavarty 2006-09-30 23:28:49 -07:00 • committed by Linus Torvalds
parent 543ade1fc9
commit eed4e51fb6
5 changed files with 203 additions and 108 deletions
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4
include/linux/aio.h
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@ -7,6 +7,7 @@
#include <linux/uio.h>
#include <asm/atomic.h>
#include <linux/uio.h>
#define AIO_MAXSEGS 4
#define AIO_KIOGRP_NR_ATOMIC 8
@ -114,6 +115,9 @@ struct kiocb {
long ki_kicked; /* just for testing */
long ki_queued; /* just for testing */
struct iovec ki_inline_vec; /* inline vector */
struct iovec *ki_iovec;
unsigned long ki_nr_segs;
unsigned long ki_cur_seg;
struct list_head ki_list; /* the aio core uses this
* for cancellation */