svn commit: r350126 - in stable/11: share/man/man9 sys/kern

[Alan Somers]

Author: asomers
Date: Fri Jul 19 14:24:33 2019
New Revision: 350126
URL: https://svnweb.freebsd.org/changeset/base/350126

Log:
  MFC r349230, r349234, r349477
  
  r349230:
  Add a VOP_BMAP(9) man page
  
  Reviewed by:	mckusick
  Sponsored by:	The FreeBSD Foundation
  Differential Revision:	https://reviews.freebsd.org/D20704
  
  r349234:
  VOP_BMAP(9): fix typo in the copyright header
  
  Reported by:	rgrimes
  MFC-With:	349230
  Sponsored by:	The FreeBSD Foundation
  
  r349477:
  [skip ci] VOP_BMAP.9: fix diction in copyright header
  
  MFC-With:	r349230
  Sponsored by:	The FreeBSD Foundation

Added:
  stable/11/share/man/man9/VOP_BMAP.9
     - copied, changed from r349230, head/share/man/man9/VOP_BMAP.9
Modified:
  stable/11/share/man/man9/Makefile
  stable/11/sys/kern/vfs_default.c
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/share/man/man9/Makefile
==============================================================================
--- stable/11/share/man/man9/Makefile	Fri Jul 19 14:23:23 2019	(r350125)
+++ stable/11/share/man/man9/Makefile	Fri Jul 19 14:24:33 2019	(r350126)
@@ -376,6 +376,7 @@ MAN=	accept_filter.9 \
 	VOP_ADVLOCK.9 \
 	VOP_ALLOCATE.9 \
 	VOP_ATTRIB.9 \
+	VOP_BMAP.9 \
 	VOP_BWRITE.9 \
 	VOP_CREATE.9 \
 	VOP_FSYNC.9 \

Copied and modified: stable/11/share/man/man9/VOP_BMAP.9 (from r349230, head/share/man/man9/VOP_BMAP.9)
==============================================================================
--- head/share/man/man9/VOP_BMAP.9	Thu Jun 20 13:59:46 2019	(r349230, copy source)
+++ stable/11/share/man/man9/VOP_BMAP.9	Fri Jul 19 14:24:33 2019	(r350126)
@@ -3,15 +3,15 @@
 .\"
 .\" Copyright (c) 2019 The FreeBSD Foundation
 .\"
-.\" This software was developed by BFF Storage Systems, LLC under sponsorship
-.\" from the FreeBSD Foundation.
+.\" This documentation was written by BFF Storage Systems, LLC under
+.\" sponsorship from the FreeBSD Foundation.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
 .\" are met:
 .\" 1. Redistributions of source code must retain the above copyright
 .\"    notice, this list of conditions and the following disclaimer.
-.\".\"2. Redistributions in binary form must reproduce the above copyright
+.\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
 .\"

Modified: stable/11/sys/kern/vfs_default.c
==============================================================================
--- stable/11/sys/kern/vfs_default.c	Fri Jul 19 14:23:23 2019	(r350125)
+++ stable/11/sys/kern/vfs_default.c	Fri Jul 19 14:24:33 2019	(r350126)
@@ -604,7 +604,13 @@ vop_stdgetwritemount(ap)
 	return (0);
 }
 
-/* XXX Needs good comment and VOP_BMAP(9) manpage */
+/*
+ * If the file system doesn't implement VOP_BMAP, then return sensible defaults:
+ * - Return the vnode's bufobj instead of any underlying device's bufobj
+ * - Calculate the physical block number as if there were equal size
+ *   consecutive blocks, but
+ * - Report no contiguous runs of blocks.
+ */
 int
 vop_stdbmap(ap)
 	struct vop_bmap_args /* {