D55145.diff
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D55145.diff
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	diff --git a/sys/fs/fuse/fuse_internal.c b/sys/fs/fuse/fuse_internal.c
	--- a/sys/fs/fuse/fuse_internal.c
	+++ b/sys/fs/fuse/fuse_internal.c
	@@ -931,8 +931,16 @@
	fao->attr.mtime = old_mtime.tv_sec;
	fao->attr.mtimensec = old_mtime.tv_nsec;
	}
	- fuse_internal_cache_attrs(vp, &fao->attr, fao->attr_valid,
	- fao->attr_valid_nsec, vap, true);
	+ /* Upgrade to exclusive lock if needed for cache update */
	+ if (VOP_ISLOCKED(vp) != LK_EXCLUSIVE) {
	+ vn_lock(vp, LK_UPGRADE \| LK_RETRY);
	+ fuse_internal_cache_attrs(vp, &fao->attr, fao->attr_valid,
	+ fao->attr_valid_nsec, vap, true);
	+ vn_lock(vp, LK_DOWNGRADE \| LK_RETRY);
	+ } else {
	+ fuse_internal_cache_attrs(vp, &fao->attr, fao->attr_valid,
	+ fao->attr_valid_nsec, vap, true);
	+ }
	if (vtyp != vnode_vtype(vp)) {
	fuse_internal_vnode_disappear(vp);
	err = ENOENT;