From: Darrick J. Wong <[email protected]> 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 <[email protected]> --- 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, }; /*
