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cache: when adding an already existing entry assert on a complete match

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This commit is contained in:
Mateusz Guzik 2020-08-19 15:08:14 +00:00
parent 7c75f14f5b
commit 6c55d6e030
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=364395
1 changed files with 9 additions and 0 deletions
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9
sys/kern/vfs_cache.c
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@ -1957,6 +1957,15 @@ cache_enter_time(struct vnode *dvp, struct vnode *vp, struct componentname *cnp,
if (n2->nc_dvp == dvp &&
n2->nc_nlen == cnp->cn_namelen &&
!bcmp(n2->nc_name, cnp->cn_nameptr, n2->nc_nlen)) {
MPASS(cache_ncp_canuse(n2));
if ((n2->nc_flag & NCF_NEGATIVE) != 0)
KASSERT(vp == NULL,
("%s: found entry pointing to a different vnode (%p != %p)",
__func__, NULL, vp));
else
KASSERT(n2->nc_vp == vp,
("%s: found entry pointing to a different vnode (%p != %p)",
__func__, n2->nc_vp, vp));
if (tsp != NULL) {
KASSERT((n2->nc_flag & NCF_TS) != 0,
("no NCF_TS"));