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 9320f12b60ade9..67f7d4a8cc7f58 100644
--- a/fs/xfs/xfs_healthmon.c
+++ b/fs/xfs/xfs_healthmon.c
@@ -23,6 +23,8 @@
#include "xfs_fsops.h"
#include "xfs_notify_failure.h"
#include "xfs_file.h"
+#include "xfs_fs.h"
+#include "xfs_ioctl.h"
#include <linux/anon_inodes.h>
#include <linux/eventpoll.h>
@@ -1228,11 +1230,38 @@ xfs_healthmon_validate(
return true;
}
+/* Handle ioctls for the health monitoring thread. */
+STATIC long
+xfs_healthmon_ioctl(
+ struct file *file,
+ unsigned int cmd,
+ unsigned long p)
+{
+ struct xfs_health_monitor hmo;
+ struct xfs_healthmon *hm = file->private_data;
+ 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 file_operations xfs_healthmon_fops = {
.owner = THIS_MODULE,
.read_iter = xfs_healthmon_read_iter,
.poll = xfs_healthmon_poll,
.release = xfs_healthmon_release,
+ .unlocked_ioctl = xfs_healthmon_ioctl,
};
/*
