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For the experimental NFSv4 client, make sure that attributes that

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predate the issue of a delegation are not cached once the delegation
is held. This is necessary, since cached attributes remain valid
while the delegation is held.

MFC after:	2 weeks
This commit is contained in:
Rick Macklem 2010-07-13 23:14:39 +00:00
parent 2a8d51200d
commit 86836fcf1f
1 changed files with 14 additions and 0 deletions
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14
sys/fs/nfsclient/nfs_clrpcops.c
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@ -268,6 +268,14 @@ else printf(" fhl=0\n");
#else
NFSLOCKNODE(np);
np->n_flag &= ~NDELEGMOD;
/*
* Invalidate the attribute cache, so that
* attributes that pre-date the issue of a
* delegation are not cached, since the
* cached attributes will remain valid while
* the delegation is held.
*/
NFSINVALATTRCACHE(np);
NFSUNLOCKNODE(np);
#endif
(void) nfscl_deleg(nmp->nm_mountp,
@ -1724,6 +1732,12 @@ nfsrpc_create(vnode_t dvp, char *name, int namelen, struct vattr *vap,
error = nfsrpc_createv4(dvp, name, namelen, vap, cverf, fmode,
owp, &dp, cred, p, dnap, nnap, nfhpp, attrflagp, dattrflagp,
dstuff, &unlocked);
/*
* There is no need to invalidate cached attributes here,
* since new post-delegation issue attributes are always
* returned by nfsrpc_createv4() and these will update the
* attribute cache.
*/
if (dp != NULL)
(void) nfscl_deleg(nmp->nm_mountp, owp->nfsow_clp,
(*nfhpp)->nfh_fh, (*nfhpp)->nfh_len, cred, p, &dp);