diff options
Diffstat (limited to 'share/man/man9/make_dev.9')
| -rw-r--r-- | share/man/man9/make_dev.9 | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/share/man/man9/make_dev.9 b/share/man/man9/make_dev.9 index de56f350faa5..9f2c36fb39a4 100644 --- a/share/man/man9/make_dev.9 +++ b/share/man/man9/make_dev.9 @@ -25,7 +25,7 @@ .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" -.Dd January 19, 2025 +.Dd November 4, 2025 .Dt MAKE_DEV 9 .Os .Sh NAME @@ -387,14 +387,18 @@ function is the same as: destroy_dev_sched_cb(cdev, NULL, NULL); .Ed .Pp -The +Neither the .Fn d_close -driver method cannot call +driver method, nor a +.Xr devfs_cdevpriv 9 +.Fa dtr +method can .Fn destroy_dev directly. Doing so causes deadlock when .Fn destroy_dev -waits for all threads to leave the driver methods. +waits for all threads to leave the driver methods and finish executing any +per-open destructors. Also, because .Fn destroy_dev sleeps, no non-sleepable locks may be held over the call. |