mirror of
https://github.com/freebsd/freebsd-src
synced 2024-09-06 09:10:28 +00:00
Explain why swapgeom_close_ev() is delegated.
Sponsored by: The FreeBSD Foundation MFC after: 1 week
This commit is contained in:
parent
e69ba32f88
commit
0c657d22eb
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=303703
|
@ -2431,8 +2431,9 @@ swapgeom_acquire(struct g_consumer *cp)
|
|||
}
|
||||
|
||||
/*
|
||||
* Remove a reference from the g_consumer. Post a close event if
|
||||
* all references go away.
|
||||
* Remove a reference from the g_consumer. Post a close event if all
|
||||
* references go away, since the function might be called from the
|
||||
* biodone context.
|
||||
*/
|
||||
static void
|
||||
swapgeom_release(struct g_consumer *cp, struct swdevt *sp)
|
||||
|
@ -2555,7 +2556,12 @@ swapgeom_close(struct thread *td, struct swdevt *sw)
|
|||
cp = sw->sw_id;
|
||||
sw->sw_id = NULL;
|
||||
mtx_unlock(&sw_dev_mtx);
|
||||
/* XXX: direct call when Giant untangled */
|
||||
|
||||
/*
|
||||
* swapgeom_close() may be called from the biodone context,
|
||||
* where we cannot perform topology changes. Delegate the
|
||||
* work to the events thread.
|
||||
*/
|
||||
if (cp != NULL)
|
||||
g_waitfor_event(swapgeom_close_ev, cp, M_WAITOK, NULL);
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue