Author: jhb
Date: Fri Feb 24 17:26:06 2012
New Revision: 232116
URL: http://svn.freebsd.org/changeset/base/232116
Log:
Adjust the nfs_skip_wcc_data_onerr setting so that it does not block
post-op attributes for ENOENT errors now that the name caching logic
depends on working post-op attributes.
MFC after: 2 weeks
Modified:
head/sys/nfsclient/nfs_krpc.c
Modified: head/sys/nfsclient/nfs_krpc.c
==============================================================================
--- head/sys/nfsclient/nfs_krpc.c Fri Feb 24 15:34:36 2012
(r232115)
+++ head/sys/nfsclient/nfs_krpc.c Fri Feb 24 17:26:06 2012
(r232116)
@@ -603,13 +603,15 @@ tryagain:
if (error == ESTALE)
nfs_purgecache(vp);
/*
- * Skip wcc data on NFS errors for now. NetApp filers
- * return corrupt postop attrs in the wcc data for NFS
- * err EROFS. Not sure if they could return corrupt
- * postop attrs for others errors.
+ * Skip wcc data on non-ENOENT NFS errors for now.
+ * NetApp filers return corrupt postop attrs in the
+ * wcc data for NFS err EROFS. Not sure if they could
+ * return corrupt postop attrs for others errors.
+ * Blocking ENOENT post-op attributes breaks negative
+ * name caching, so always allow it through.
*/
if ((nmp->nm_flag & NFSMNT_NFSV3) &&
- !nfs_skip_wcc_data_onerr) {
+ (!nfs_skip_wcc_data_onerr || error == ENOENT)) {
*mrp = mrep;
*mdp = md;
*dposp = dpos;
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