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NFS: Allow the mount option retrans=0

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We should allow retrans=0 as just meaning that every timeout is a major
timeout, and that there is no increment in the timeout value.

For instance, this means that we would allow TCP users to specify a
flat timeout value of 60s, by specifying "timeo=600,retrans=0" in their
mount option string.

Siged-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust 2016-08-16 10:26:47 -04:00
parent 1c8d477a77
commit a956beda19
3 changed files with 26 additions and 8 deletions
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10
fs/nfs/client.c
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@ -426,7 +426,7 @@ EXPORT_SYMBOL_GPL(nfs_mark_client_ready);
* Initialise the timeout values for a connection
*/
void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
unsigned int timeo, unsigned int retrans)
int timeo, int retrans)
{
to->to_initval = timeo * HZ / 10;
to->to_retries = retrans;
@ -434,9 +434,9 @@ void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
switch (proto) {
case XPRT_TRANSPORT_TCP:
case XPRT_TRANSPORT_RDMA:
if (to->to_retries == 0)
if (retrans == NFS_UNSPEC_RETRANS)
to->to_retries = NFS_DEF_TCP_RETRANS;
if (to->to_initval == 0)
if (timeo == NFS_UNSPEC_TIMEO || to->to_retries == 0)
to->to_initval = NFS_DEF_TCP_TIMEO * HZ / 10;
if (to->to_initval > NFS_MAX_TCP_TIMEOUT)
to->to_initval = NFS_MAX_TCP_TIMEOUT;
@ -449,9 +449,9 @@ void nfs_init_timeout_values(struct rpc_timeout *to, int proto,
to->to_exponential = 0;
break;
case XPRT_TRANSPORT_UDP:
if (to->to_retries == 0)
if (retrans == NFS_UNSPEC_RETRANS)
to->to_retries = NFS_DEF_UDP_RETRANS;
if (!to->to_initval)
if (timeo == NFS_UNSPEC_TIMEO || to->to_initval == 0)
to->to_initval = NFS_DEF_UDP_TIMEO * HZ / 10;
if (to->to_initval > NFS_MAX_UDP_TIMEOUT)
to->to_initval = NFS_MAX_UDP_TIMEOUT;