Document a bug when processes hang on uvn_fp2. FWIW, hung process exhibit this stack backtrace: sleepq_block mtsleep uvn_findpage uvn_findpages genfs_getpages puffs_vnop_getpages puffs_vnop_checkop VOP_GETPAGES uvn_get uvm_fault_internal trap copyin uiomove ubc_uiomove puffs_vnop_write puffs_vnop_checkop VOP_WRITE vn_write dofilewrite sys_write syscalldiff -r1.5 -r1.6 src/usr.sbin/perfused/perfused.8
(manu)
--- src/usr.sbin/perfused/perfused.8 2011/05/10 12:16:18 1.5
+++ src/usr.sbin/perfused/perfused.8 2011/12/16 10:57:43 1.6
@@ -1,4 +1,4 @@
-.\" $NetBSD: perfused.8,v 1.5 2011/05/10 12:16:18 njoly Exp $
+.\" $NetBSD: perfused.8,v 1.6 2011/12/16 10:57:43 manu Exp $
.\"
.\" Copyright (c) 2010 Emmanuel Dreyfus. All rights reserved.
.\"
@@ -124,6 +124,14 @@
For detailed debugging use the
.Fl d
(debug) option.
+.Sh BUGS
+When
+.Nm
+runs in the foreground (using the
+.Fl f
+flag), some processes using the FUSE filesystem will
+sometime hang on
+.Sq uvn_fp2 .
.Sh SEE ALSO
.Xr mount 2 ,
.Xr perfuse_mount 3 ,