diff options
| -rw-r--r-- | usr/iscsid.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/usr/iscsid.c b/usr/iscsid.c index dc54fec..478c83d 100644 --- a/usr/iscsid.c +++ b/usr/iscsid.c @@ -34,6 +34,7 @@ #include <sys/wait.h> #include <sys/types.h> #include <sys/stat.h> +#include <sys/prctl.h> #ifndef NO_SYSTEMD #include <systemd/sd-daemon.h> #endif @@ -56,6 +57,10 @@ #include "iscsid_req.h" #include "iscsi_err.h" +#ifndef PR_SET_IO_FLUSHER +#define PR_SET_IO_FLUSHER 57 +#endif + /* global config info */ struct iscsi_daemon_config daemon_config; struct iscsi_daemon_config *dconfig = &daemon_config; @@ -616,6 +621,15 @@ int main(int argc, char *argv[]) exit(ISCSI_ERR); } + if (prctl(PR_SET_IO_FLUSHER, 1, 0, 0, 0) == -1) { + if (errno == EINVAL) { + log_info("prctl could not mark iscsid with the PR_SET_IO_FLUSHER flag, because the feature is not supported in this kernel. Will proceed, but iscsid may hang during session level recovery if memory is low.\n"); + } else { + log_error("prctl could not mark iscsid with the PR_SET_IO_FLUSHER flag due to error %s\n", + strerror(errno)); + } + } + set_state_to_ready(); event_loop(ipc, control_fd, mgmt_ipc_fd); |