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sync_vnode(): add assert to check vn_start_write() correctness

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Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2023-04-15 22:41:44 +03:00
parent da86e7a20d
commit d8a096621b
1 changed files with 3 additions and 0 deletions
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3
sys/kern/vfs_subr.c
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@ -2659,6 +2659,9 @@ sync_vnode(struct synclist *slp, struct bufobj **bo, struct thread *td)
mtx_lock(&sync_mtx);
return (*bo == LIST_FIRST(slp));
}
MPASSERT(mp == NULL || (curthread->td_pflags & TDP_IGNSUSP) != 0 ||
(mp->mnt_kern_flag & MNTK_SUSPENDED) == 0, mp,
("suspended mp syncing vp %p", vp));
vn_lock(vp, LK_EXCLUSIVE | LK_RETRY);
(void) VOP_FSYNC(vp, MNT_LAZY, td);
VOP_UNLOCK(vp);