Commit c1e3a87b authored by Jim Harris's avatar Jim Harris
Browse files

util: add 'unique' parameter to spdk_get_io_channel 



Some subsystems may wish to create unique I/O channels
which are not shared across all users of the same I/O
device on the same thread.

Signed-off-by: default avatarJim Harris <james.r.harris@intel.com>
Change-Id: I3ade3675d57338cf85b6a301285e6f392bd6cd2e
parent ff38547d

include/spdk/io_channel.h

+4 −1
Original line number Diff line number Diff line
@@ -96,8 +96,11 @@ void spdk_io_device_unregister(void *io_device); 
 * The priority parameter allows callers to create different I/O channels to the same

 *  I/O device with varying priorities.  Currently this value must be set to

 *  SPDK_IO_PRIORITY_DEFAULT.

 *

 * The unique parameter allows callers to specify that an existing channel should not

 *  be used to satisfy this request, even if the io_device and priority fields match.

 */

struct spdk_io_channel *spdk_get_io_channel(void *io_device, uint32_t priority);

struct spdk_io_channel *spdk_get_io_channel(void *io_device, uint32_t priority, bool unique);



/**

 * \brief Releases a reference to an I/O channel.

lib/bdev/aio/blockdev_aio.c

+1 −1
Original line number Diff line number Diff line
@@ -336,7 +336,7 @@ blockdev_aio_destroy_cb(void *io_device, void *ctx_buf) 
static struct spdk_io_channel *

blockdev_aio_get_io_channel(struct spdk_bdev *bdev, uint32_t priority)

{

	return spdk_get_io_channel(bdev, priority);

	return spdk_get_io_channel(bdev, priority, false);

}



static const struct spdk_bdev_fn_table aio_fn_table = {

lib/bdev/nvme/blockdev_nvme.c

+1 −1
Original line number Diff line number Diff line
@@ -336,7 +336,7 @@ blockdev_nvme_get_io_channel(struct spdk_bdev *bdev, uint32_t priority) 
{

	struct nvme_blockdev *nvme_bdev = (struct nvme_blockdev *)bdev;



	return spdk_get_io_channel(nvme_bdev->ctrlr, priority);

	return spdk_get_io_channel(nvme_bdev->ctrlr, priority, false);

}



static const struct spdk_bdev_fn_table nvmelib_fn_table = {

lib/copy/copy_engine.c

+2 −2
Original line number Diff line number Diff line
@@ -151,7 +151,7 @@ memcpy_destroy_cb(void *io_device, void *ctx_buf) 


static struct spdk_io_channel *mem_get_io_channel(uint32_t priority)

{

	return spdk_get_io_channel(&memcpy_copy_engine, priority);

	return spdk_get_io_channel(&memcpy_copy_engine, priority, false);

}



static int
@@ -208,7 +208,7 @@ copy_destroy_cb(void *io_device, void *ctx_buf) 
struct spdk_io_channel *

spdk_copy_engine_get_io_channel(uint32_t priority)

{

	return spdk_get_io_channel(&spdk_copy_module_list, priority);

	return spdk_get_io_channel(&spdk_copy_module_list, priority, false);

}



static int

lib/copy/ioat/copy_engine_ioat.c

+1 −1
Original line number Diff line number Diff line
@@ -236,7 +236,7 @@ ioat_destroy_cb(void *io_device, void *ctx_buf) 
static struct spdk_io_channel *

ioat_get_io_channel(uint32_t priority)

{

	return spdk_get_io_channel(&ioat_copy_engine, priority);

	return spdk_get_io_channel(&ioat_copy_engine, priority, false);

}



struct ioat_probe_ctx {