d/numam-spdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

lib/nbd: Set the O_NONBLOCK flag for kernel_sp_fd

Browse Source 
Change-Id: I656be9023d7e0ccd86d1c8fbac3e2848ce61a772
Signed-off-by: Ziye Yang <ziye.yang@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/5733
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: <dongx.yi@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
This commit is contained in:
Ziye Yang 2020-12-30 22:45:38 +08:00 committed by Tomasz Zawadzki
parent a1d4a714b2
commit 42580f7e15
1 changed files with 12 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
lib/nbd/nbd.c
View File

@ -968,10 +968,21 @@ nbd_enable_kernel(void *arg)
{
struct spdk_nbd_start_ctx *ctx = arg;
int rc;
int flag;
/* Declare device setup by this process */
rc = ioctl(ctx->nbd->dev_fd, NBD_SET_SOCK, ctx->nbd->kernel_sp_fd);
if (rc == -1) {
if (!rc) {
flag = fcntl(ctx->nbd->kernel_sp_fd, F_GETFL);
rc = fcntl(ctx->nbd->kernel_sp_fd, F_SETFL, flag | O_NONBLOCK);
if (rc < 0) {
SPDK_ERRLOG("fcntl can't set nonblocking mode for socket, fd: %d (%s)\n",
ctx->nbd->kernel_sp_fd, spdk_strerror(errno));
}
}
if (rc) {
if (errno == EBUSY && ctx->polling_count-- > 0) {
if (ctx->poller == NULL) {
ctx->poller = SPDK_POLLER_REGISTER(nbd_enable_kernel, ctx,