From: Nicholas Bellinger n...@linux-iscsi.org
This patch adds posix-aio-compat.c:paio_submit_len(), which is a identical
to paio_submit() expect that in expected nb_len instead of nb_sectors (* 512)
so that it can be used by BSG AIO for write()/read() of struct sg_io_v4.
Signed-off-by: Nicholas A. Bellinger n...@linux-iscsi.org
---
block/raw-posix-aio.h |3 +++
posix-aio-compat.c| 28
2 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/block/raw-posix-aio.h b/block/raw-posix-aio.h
index dfc63b8..29df842 100644
--- a/block/raw-posix-aio.h
+++ b/block/raw-posix-aio.h
@@ -30,6 +30,9 @@ int paio_init(void);
BlockDriverAIOCB *paio_submit(BlockDriverState *bs, int fd,
int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
BlockDriverCompletionFunc *cb, void *opaque, int type);
+BlockDriverAIOCB *paio_submit_len(BlockDriverState *bs, int fd,
+int64_t sector_num, QEMUIOVector *qiov, int nb_len,
+BlockDriverCompletionFunc *cb, void *opaque, int type);
BlockDriverAIOCB *paio_ioctl(BlockDriverState *bs, int fd,
unsigned long int req, void *buf,
BlockDriverCompletionFunc *cb, void *opaque);
diff --git a/posix-aio-compat.c b/posix-aio-compat.c
index 272e998..ac9276c 100644
--- a/posix-aio-compat.c
+++ b/posix-aio-compat.c
@@ -585,6 +585,34 @@ BlockDriverAIOCB *paio_submit(BlockDriverState *bs, int fd,
return acb-common;
}
+BlockDriverAIOCB *paio_submit_len(BlockDriverState *bs, int fd,
+int64_t sector_num, QEMUIOVector *qiov, int nb_len,
+BlockDriverCompletionFunc *cb, void *opaque, int type)
+{
+struct qemu_paiocb *acb;
+
+acb = qemu_aio_get(raw_aio_pool, bs, cb, opaque);
+if (!acb)
+return NULL;
+acb-aio_type = type;
+acb-aio_fildes = fd;
+acb-ev_signo = SIGUSR2;
+acb-async_context_id = get_async_context_id();
+
+if (qiov) {
+acb-aio_iov = qiov-iov;
+acb-aio_niov = qiov-niov;
+}
+acb-aio_nbytes = nb_len;
+acb-aio_offset = 0;
+
+acb-next = posix_aio_state-first_aio;
+posix_aio_state-first_aio = acb;
+
+qemu_paio_submit(acb);
+return acb-common;
+}
+
BlockDriverAIOCB *paio_ioctl(BlockDriverState *bs, int fd,
unsigned long int req, void *buf,
BlockDriverCompletionFunc *cb, void *opaque)
--
1.5.6.5
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
