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FreeBSD: vn_flush_cached_data: observe vnode locking contract 

vm_object_page_clean() expects that the associated vnode is locked
as VOP_PUTPAGES() may get called on the vnode.

Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Andriy Gapon <avg@FreeBSD.org>
Closes #14079
(cherry picked from commit 41133c9794)
This commit is contained in:
Andriy Gapon 2022-10-27 01:00:58 +03:00 committed by Brian Behlendorf
parent 4e3fecbdfd
commit 04f1983aab
1 changed files with 2 additions and 0 deletions
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2
include/os/freebsd/spl/sys/vnode.h
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@ -95,9 +95,11 @@ vn_flush_cached_data(vnode_t *vp, boolean_t sync)
if (vp->v_object->flags & OBJ_MIGHTBEDIRTY) { if (vp->v_object->flags & OBJ_MIGHTBEDIRTY) {
#endif #endif
int flags = sync ? OBJPC_SYNC : 0; int flags = sync ? OBJPC_SYNC : 0;
vn_lock(vp, LK_SHARED | LK_RETRY);
zfs_vmobject_wlock(vp->v_object); zfs_vmobject_wlock(vp->v_object);
vm_object_page_clean(vp->v_object, 0, 0, flags); vm_object_page_clean(vp->v_object, 0, 0, flags);
zfs_vmobject_wunlock(vp->v_object); zfs_vmobject_wunlock(vp->v_object);
VOP_UNLOCK(vp);
} }
} }