diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-04-07 18:43:24 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2009-04-07 18:43:24 +0000 |
| commit | f141eafe286c785f7e2c1e312a73f90d66bdfb90 (patch) | |
| tree | 049474e891e06deec79bd3d58d49b49ba627276a /block_int.h | |
| parent | c87c0672936a5b825c0b95bb1d7f5d6dc92294e4 (diff) | |
push down vector linearization to posix-aio-compat.c (Christoph Hellwig)
Make all AIO requests vectored and defer linearization until the actual
I/O thread. This prepares for using native preadv/pwritev.
Also enables asynchronous direct I/O by handling that case in the I/O thread.
Qcow and qcow2 propably want to be adopted to directly deal with multi-segment
requests, but that can be implemented later.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7020 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'block_int.h')
| -rw-r--r-- | block_int.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/block_int.h b/block_int.h index dc4335982..3e78997c7 100644 --- a/block_int.h +++ b/block_int.h @@ -54,11 +54,11 @@ struct BlockDriver { int (*bdrv_set_key)(BlockDriverState *bs, const char *key); int (*bdrv_make_empty)(BlockDriverState *bs); /* aio */ - BlockDriverAIOCB *(*bdrv_aio_read)(BlockDriverState *bs, - int64_t sector_num, uint8_t *buf, int nb_sectors, + BlockDriverAIOCB *(*bdrv_aio_readv)(BlockDriverState *bs, + int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, BlockDriverCompletionFunc *cb, void *opaque); - BlockDriverAIOCB *(*bdrv_aio_write)(BlockDriverState *bs, - int64_t sector_num, const uint8_t *buf, int nb_sectors, + BlockDriverAIOCB *(*bdrv_aio_writev)(BlockDriverState *bs, + int64_t sector_num, QEMUIOVector *qiov, int nb_sectors, BlockDriverCompletionFunc *cb, void *opaque); void (*bdrv_aio_cancel)(BlockDriverAIOCB *acb); int aiocb_size; |