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Fix font issues

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Submitted by:	heirloom doctools upstream
This commit is contained in:
Baptiste Daroussin 2015-05-01 11:46:24 +00:00
parent fe22991fb8
commit d8d2119e26
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=282297
1 changed files with 10 additions and 10 deletions
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20
share/doc/papers/bufbio/bio.ms
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@ -40,7 +40,7 @@ This paper contains the road-map for a stackable "BIO" system in
FreeBSD, which will support these facilities.
.AE
.NH
The miseducation of \fCstruct buf\fP.
The miseducation of \f(CW.)struct buf\fP.
.PP
To fully appreciate the topic, I include a little historic overview
of struct buf, it is a most enlightening case of not exactly bit-rot
@ -51,7 +51,7 @@ memory is was introduced into UNIX, all disk I/O were done from or
to a struct buf. In the 6th edition sources, as printed in Lions
Book, struct buf looks like this:
.DS
.ft C
.ft CW
.ps -1
struct buf
{
@ -95,7 +95,7 @@ aspect and only a few fields relate exclusively to the cache aspect.
If we step forward to the BSD 4.4-Lite-2 release, struct buf has grown
a bit here or there:
.DS
.ft C
.ft CW
.ps -1
struct buf {
LIST_ENTRY(buf) b_hash; /* Hash chain. */
@ -144,7 +144,7 @@ aspect, link buffers to the VM system, provide hacks for file-systems
.PP
By the time we get to FreeBSD 3.0 more stuff has grown on struct buf:
.DS
.ft C
.ft CW
.ps -1
struct buf {
LIST_ENTRY(buf) b_hash; /* Hash chain. */
@ -215,7 +215,7 @@ and Vinum. They all basically do the same: they map I/O requests from
a logical space to a physical space, and the mappings they perform
can be 1:1 or 1:N. \**
.FS
It is interesting to note that Lions in his comments to the \fCrkaddr\fP
It is interesting to note that Lions in his comments to the \f(CW.)rkaddr\fP
routine (p. 16-2) writes \fIThe code in this procedure incorporates
a special feature for files which extend over more than one disk
drive. This feature is described in the UPM Section "RK(IV)". Its
@ -258,7 +258,7 @@ limited extent diskslice/label, which
need only the I/O aspect, not the vnode, caching or VM linkage.
.IP
.I
The I/O aspect of struct buf should be put in a separate \fCstruct bio\fP.
The I/O aspect of struct buf should be put in a separate \f(CW.)struct bio\fP.
.R
.NH 1
Implications for future struct buf improvements
@ -296,7 +296,7 @@ Anything that could be added to or done with
the I/O aspect of struct buf can also be added to or done
with the I/O aspect if it lives in a new "struct bio".
.NH 1
Implementing a \fCstruct bio\fP
Implementing a \f(CW.)struct bio\fP
.PP
The first decision to be made was who got to use the name "struct buf",
and considering the fact that it is the I/O aspect which gets separated
@ -344,7 +344,7 @@ Definition of struct bio
.PP
With the cleanup of b_flags in place, the definition of struct bio looks like this:
.DS
.ft C
.ft CW
.ps -1
struct bio {
u_int bio_cmd; /* I/O operation. */
@ -375,7 +375,7 @@ Definition of struct buf
After adding a struct bio to struct buf and the fields aliased into it
struct buf looks like this:
.DS
.ft C
.ft CW
.ps -1
struct buf {
/* XXX: b_io must be the first element of struct buf for now /phk */
@ -424,7 +424,7 @@ And can be found at http://phk.freebsd.dk/misc
.FE
and consists mainly of systematic substitutions like these
.DS
.ft C
.ft CW
s/struct buf/struct bio/
s/b_flags/bio_flags/
s/b_bcount/bio_bcount/