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nfsd: export upcalls must not return ESTALE when mountd is down

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If the rpc.mountd daemon goes down, then that should not cause all
exports to start failing with ESTALE errors. Let's explicitly
distinguish between the cache upcall cases that need to time out,
and those that do not.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Trond Myklebust
2020-03-01 18:21:42 -05:00
committed by Chuck Lever
parent 6a30e47fa0
commit 65286b883c
7 changed files with 85 additions and 32 deletions
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12
net/sunrpc/auth_gss/svcauth_gss.c
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@ -180,6 +180,11 @@ static struct cache_head *rsi_alloc(void)
return NULL;
}
static int rsi_upcall(struct cache_detail *cd, struct cache_head *h)
{
return sunrpc_cache_pipe_upcall_timeout(cd, h);
}
static void rsi_request(struct cache_detail *cd,
struct cache_head *h,
char **bpp, int *blen)
@ -278,6 +283,7 @@ static const struct cache_detail rsi_cache_template = {
.hash_size = RSI_HASHMAX,
.name = "auth.rpcsec.init",
.cache_put = rsi_put,
.cache_upcall = rsi_upcall,
.cache_request = rsi_request,
.cache_parse = rsi_parse,
.match = rsi_match,
@ -424,6 +430,11 @@ rsc_alloc(void)
return NULL;
}
static int rsc_upcall(struct cache_detail *cd, struct cache_head *h)
{
return -EINVAL;
}
static int rsc_parse(struct cache_detail *cd,
char *mesg, int mlen)
{
@ -550,6 +561,7 @@ static const struct cache_detail rsc_cache_template = {
.hash_size = RSC_HASHMAX,
.name = "auth.rpcsec.context",
.cache_put = rsc_put,
.cache_upcall = rsc_upcall,
.cache_parse = rsc_parse,
.match = rsc_match,
.init = rsc_init,