Try to execute mdmon from the target namespace. When used for initramfs
handovers we need to drop all references to the initramfs filesystem for
that memory to be freed.
Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
---
mdmon.c | 23 +++++++++++++++++++++++
1 files changed, 23 insertions(+), 0 deletions(-)
diff --git a/mdmon.c b/mdmon.c
index 5f87e78..d3e8be5 100644
--- a/mdmon.c
+++ b/mdmon.c
@@ -369,6 +369,29 @@ int mdmon(char *devname, int devnum, int scan, char *switchroot)
dprintf("starting mdmon for %s in %s\n",
devname, switchroot ? : "/");
+
+ /* try to spawn mdmon instances from the target file system */
+ if (switchroot && strcmp(switchroot, "/") != 0) {
+ char path[1024];
+ pid_t pid;
+
+ sprintf(path, "%s/sbin/mdmon", switchroot);
+ switch (fork()) {
+ case 0:
+ execl(path, "mdmon", devname, NULL);
+ exit(1);
+ case -1:
+ return 1;
+ default:
+ pid = wait(&status);
+ if (pid > -1 && WIFEXITED(status) &&
+ WEXITSTATUS(status) == 0)
+ return 0;
+ else
+ return 1;
+ }
+ }
+
mdfd = open_dev(devnum);
if (mdfd < 0) {
fprintf(stderr, "mdmon: %s: %s\n", devname,
--
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