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gpt: add support for bdev_io_wait when no memory

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according to commit:
     bdev: add spdk_bdev_queue_io_wait
This patch will make io_wait to support gpt

Change-Id: I73795756f232f1b596b65ecbc7e3ba4d990c9fe0
Signed-off-by: Ni Xun <nixun@baidu.com>
Signed-off-by: Li Lin <lilin24@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Reviewed-on: https://review.gerrithub.io/428338
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
This commit is contained in:
Ni Xun 2018-10-08 17:16:08 +08:00 committed by Jim Harris
parent 3785a4d83b
commit 08ed55bb1d
1 changed files with 51 additions and 2 deletions
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53
lib/bdev/gpt/vbdev_gpt.c
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@ -51,10 +51,12 @@
static int vbdev_gpt_init(void);
static void vbdev_gpt_examine(struct spdk_bdev *bdev);
static int vbdev_gpt_get_ctx_size(void);
static struct spdk_bdev_module gpt_if = {
.name = "gpt",
.module_init = vbdev_gpt_init,
.get_ctx_size = vbdev_gpt_get_ctx_size,
.examine_disk = vbdev_gpt_examine,
};
@ -79,6 +81,14 @@ struct gpt_channel {
struct spdk_bdev_part_channel part_ch;
};
struct gpt_io {
struct spdk_io_channel *ch;
struct spdk_bdev_io *bdev_io;
/* for bdev_io_wait */
struct spdk_bdev_io_wait_entry bdev_io_wait;
};
static SPDK_BDEV_PART_TAILQ g_gpt_disks = TAILQ_HEAD_INITIALIZER(g_gpt_disks);
static bool g_gpt_disabled;
@ -156,16 +166,49 @@ vbdev_gpt_destruct(void *ctx)
return spdk_bdev_part_free(&gpt_disk->part);
}
static void
vbdev_gpt_resubmit_request(void *arg)
{
struct gpt_io *io = (struct gpt_io *)arg;
vbdev_gpt_submit_request(io->ch, io->bdev_io);
}
static void
vbdev_gpt_queue_io(struct gpt_io *io)
{
int rc;
io->bdev_io_wait.bdev = io->bdev_io->bdev;
io->bdev_io_wait.cb_fn = vbdev_gpt_resubmit_request;
io->bdev_io_wait.cb_arg = io;
rc = spdk_bdev_queue_io_wait(io->bdev_io->bdev,
io->ch, &io->bdev_io_wait);
if (rc != 0) {
SPDK_ERRLOG("Queue io failed in vbdev_gpt_queue_io, rc=%d.\n", rc);
spdk_bdev_io_complete(io->bdev_io, SPDK_BDEV_IO_STATUS_FAILED);
}
}
static void
vbdev_gpt_submit_request(struct spdk_io_channel *_ch, struct spdk_bdev_io *bdev_io)
{
struct gpt_channel *ch = spdk_io_channel_get_ctx(_ch);
struct gpt_io *io = (struct gpt_io *)bdev_io->driver_ctx;
int rc;
rc = spdk_bdev_part_submit_request(&ch->part_ch, bdev_io);
if (rc) {
SPDK_ERRLOG("gpt: error on bdev_io submission, rc=%d.\n", rc);
spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_FAILED);
if (rc == -ENOMEM) {
SPDK_DEBUGLOG(SPDK_LOG_VBDEV_GPT, "gpt: no memory, queue io\n");
io->ch = _ch;
io->bdev_io = bdev_io;
vbdev_gpt_queue_io(io);
} else {
SPDK_ERRLOG("gpt: error on bdev_io submission, rc=%d.\n", rc);
spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_FAILED);
}
}
}
@ -384,6 +427,12 @@ vbdev_gpt_init(void)
return 0;
}
static int
vbdev_gpt_get_ctx_size(void)
{
return sizeof(struct gpt_io);
}
static void
vbdev_gpt_examine(struct spdk_bdev *bdev)
{