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kernel: cleanup unused fields from devpipe

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We don't need to multiply session path by 2, the definition
for NETQID is:

Meaning we don't need to save room between session paths
for individual Qid paths. This doubles the amount of
pipe sessions we can have before a wrap.
This commit is contained in:
Jacob Moody 2022-06-05 12:29:50 +00:00
parent 926be5e34e
commit d8d433894a
1 changed files with 3 additions and 4 deletions
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7
sys/src/9/port/devpipe.c
View file

@ -11,9 +11,7 @@ typedef struct Pipe Pipe;
struct Pipe
{
QLock;
Pipe *next;
int ref;
ulong path;
Queue *q[2];
int qref[2];
};
@ -57,6 +55,7 @@ pipeattach(char *spec)
{
Pipe *p;
Chan *c;
ulong path;
c = devattach('|', spec);
if(waserror()){
@ -82,10 +81,10 @@ pipeattach(char *spec)
poperror();
lock(&pipealloc);
p->path = ++pipealloc.path;
path = ++pipealloc.path;
unlock(&pipealloc);
mkqid(&c->qid, NETQID(2*p->path, Qdir), 0, QTDIR);
mkqid(&c->qid, NETQID(path, Qdir), 0, QTDIR);
c->aux = p;
c->dev = 0;
return c;