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Remove documentation of ENABLE_VFS_IOOPT: we don't want people to use

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it, so don't suggest it.  It's likely going away soon also, so avoid
believing it's supported.

Suggested by:	Sean Kelly <smkelly@zombie.org>
Approved by:	re
This commit is contained in:
Robert Watson 2002-12-09 03:41:37 +00:00
parent 1bebbbe220
commit bf616e0493
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=107697
1 changed files with 0 additions and 27 deletions
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share/man/man7/ffs.7
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@ -15,9 +15,6 @@
.\" 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.
.\" 3. The names of the authors may not be used to endorse or promote
.\" products derived from this software without specific prior written
.\" permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
@ -40,7 +37,6 @@
.Nd Berkeley fast filesystem
.Sh SYNOPSIS
In the kernel configuration file:
.Cd "options ENABLE_VFS_IOOPT"
.Cd "options FFS"
.Cd "options QUOTA"
.Cd "options SOFTUPDATES"
@ -64,29 +60,6 @@ for speed and reliability
and is the default
.Fx
filesystem.
.Ss VFS I/O optimization
.Bl -tag -width 2n
.It Cd "options ENABLE_VFS_IOOPT"
This option enables the I/O optimization through the VM system,
using VM operations instead of copying operations when possible.
This option adds a
.Xr sysctl 8
MIB,
.Va vfs.ioopt .
The following are values and effects for
.Va vfs.ioopt :
.Pp
.Bl -tag -width ".Em Value" -offset indent -compact
.It Em Value
.Em Effect
.It Li 0
No optimization
.It Li 1
VM operations if a request fits
.It Li 2
Aggressive optimization (VM used as much as possible)
.El
.El
.Ss Quotas
.Bl -tag -width 2n
.It Cd "options QUOTA"