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The device vnodes are often unlocked when bread() or bwrite() is

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called.  This probably should be fixed eventually, but for now it is
not needed to try to flush such vnodes from the buffer allocation
context.

Reported and tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Approved by:	re (gjb)
This commit is contained in:
Konstantin Belousov 2013-10-09 18:45:01 +00:00
parent 2c1531e746
commit acb9d2c7f0
1 changed files with 2 additions and 1 deletions
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3
sys/kern/vfs_bio.c
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@ -2076,7 +2076,8 @@ getnewbuf_bufd_help(struct vnode *vp, int gbflags, int slpflag, int slptimeo,
wait = MNT_NOWAIT;
mtx_lock(&nblock);
while (needsbuffer & flags) {
if (vp != NULL && (td->td_pflags & TDP_BUFNEED) == 0) {
if (vp != NULL && vp->v_type != VCHR &&
(td->td_pflags & TDP_BUFNEED) == 0) {
mtx_unlock(&nblock);
/*