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Code Issues Releases Activity

vinvalbuf() was only waiting for write-I/O to complete. It really has to

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wait for both read AND write I/O to complete.  Only NFS calls vinvalbuf()
on an active vnode (when the server indicates that the file is stale), so
this bug fix only effects NFS clients.

MFC after:	3 days
This commit is contained in:
Matthew Dillon 2001-10-05 20:10:32 +00:00
parent 23620bde07
commit 845bd795c9
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=84561
1 changed files with 15 additions and 4 deletions
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19
sys/kern/vfs_subr.c
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@ -826,10 +826,21 @@ vinvalbuf(vp, flags, cred, td, slpflag, slptimeo)
}
}
while (vp->v_numoutput > 0) {
vp->v_flag |= VBWAIT;
tsleep(&vp->v_numoutput, PVM, "vnvlbv", 0);
}
/*
* Wait for I/O to complete. XXX needs cleaning up. The vnode can
* have write I/O in-progress but if there is a VM object then the
* VM object can also have read-I/O in-progress.
*/
do {
while (vp->v_numoutput > 0) {
vp->v_flag |= VBWAIT;
tsleep(&vp->v_numoutput, PVM, "vnvlbv", 0);
}
if (VOP_GETVOBJECT(vp, &object) == 0) {
while (object->paging_in_progress)
vm_object_pip_sleep(object, "vnvlbx");
}
} while (vp->v_numoutput > 0);
splx(s);