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Wake up writer when selecting for read on an empty pipe.

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Set fp_revived to NOT_REVIVING when decrementing reviving.
This commit is contained in:
Philip Homburg 2006-06-14 13:17:41 +00:00
parent 474d137c39
commit 221e731e45
1 changed files with 4 additions and 1 deletions
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5
servers/fs/pipe.c
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@ -121,7 +121,7 @@ int notouch; /* check only */
r = SUSPEND;
}
/* If need be, activate sleeping writers. */
if (susp_count > 0 && !notouch)
if (susp_count > 0)
release(rip, WRITE, susp_count);
}
return(r);
@ -360,7 +360,10 @@ int proc_nr_e;
task = -rfp->fp_task;
if (rfp->fp_revived == REVIVING)
{
rfp->fp_revived = NOT_REVIVING;
reviving--;
}
switch (task) {
case XPIPE: /* process trying to read or write a pipe */