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| author | kib <kib@FreeBSD.org> | 2009-04-11 16:12:20 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2009-04-11 16:12:20 +0000 |
| commit | 9260481d50f0758285a0823575874b37738f9284 (patch) | |
| tree | 04b38cadd604f4151eeb950ba597808df992d162 /sys/kern/vfs_cache.c | |
| parent | dc27114478917eb2e8a2b544e8b2fc8342573f0e (diff) | |
| download | FreeBSD-src-9260481d50f0758285a0823575874b37738f9284.zip FreeBSD-src-9260481d50f0758285a0823575874b37738f9284.tar.gz | |
When zapping v_cache_dd for !MAKEENTRY case in cache_lookup(), we shall
lock cache as writer.
Reviewed by: kan
Diffstat (limited to 'sys/kern/vfs_cache.c')
| -rw-r--r-- | sys/kern/vfs_cache.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c index 6172f5b..8210126 100644 --- a/sys/kern/vfs_cache.c +++ b/sys/kern/vfs_cache.c @@ -410,6 +410,8 @@ retry_wlocked: goto unlock; } if ((cnp->cn_flags & MAKEENTRY) == 0) { + if (!wlocked && !CACHE_UPGRADE_LOCK()) + goto wlock; if (dvp->v_cache_dd->nc_flag & NCF_ISDOTDOT) cache_zap(dvp->v_cache_dd); dvp->v_cache_dd = NULL; |
