From: Darrick J. Wong <djwong@xxxxxxxxxx>
Make it so that we can reconfigure the health monitoring device by
calling the XFS_IOC_HEALTH_MONITOR ioctl on it.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
fs/xfs/xfs_healthmon.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/fs/xfs/xfs_healthmon.c b/fs/xfs/xfs_healthmon.c
index 34efc5b5d85e3..27cfca98164eb 100644
--- a/fs/xfs/xfs_healthmon.c
+++ b/fs/xfs/xfs_healthmon.c
@@ -22,6 +22,8 @@
#include "xfs_health.h"
#include "xfs_healthmon.h"
#include "xfs_notify_failure.h"
+#include "xfs_fs.h"
+#include "xfs_ioctl.h"
/*
* Live Health Monitoring
@@ -995,9 +997,36 @@ xfs_healthmon_validate(
return true;
}
+/* Handle ioctls for the health monitoring thread. */
+STATIC long
+xfs_healthmon_ioctl(
+ struct thread_with_stdio *thr,
+ unsigned int cmd,
+ unsigned long p)
+{
+ struct xfs_health_monitor hmo;
+ struct xfs_healthmon *hm = to_healthmon(thr);
+ void __user *arg = (void __user *)p;
+
+ if (cmd != XFS_IOC_HEALTH_MONITOR)
+ return -ENOTTY;
+
+ if (copy_from_user(&hmo, arg, sizeof(hmo)))
+ return -EFAULT;
+
+ if (!xfs_healthmon_validate(&hmo))
+ return -EINVAL;
+
+ mutex_lock(&hm->lock);
+ hm->verbose = !!(hmo.flags & XFS_HEALTH_MONITOR_VERBOSE);
+ mutex_unlock(&hm->lock);
+ return 0;
+}
+
static const struct thread_with_stdio_ops xfs_healthmon_ops = {
.exit = xfs_healthmon_exit,
.fn = xfs_healthmon_run,
+ .unlocked_ioctl = xfs_healthmon_ioctl,
};
/*
