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authorEryu Guan <eguan@linux.alibaba.com>2021-03-23 10:57:13 +0800
committerTrond Myklebust <trond.myklebust@hammerspace.com>2021-04-05 09:04:21 -0400
commitc9301cb35b59ad7d733a7332f3aefd4da1382468 (patch)
tree121b59ea9a5d1140f6f9c239d9c0fa0f6a2dad04
parentsunrpc: honor rpc_task's timeout value in rpcb_create() (diff)
downloadlinux-dev-c9301cb35b59ad7d733a7332f3aefd4da1382468.tar.xz
linux-dev-c9301cb35b59ad7d733a7332f3aefd4da1382468.zip
nfs: hornor timeo and retrans option when mounting NFSv3
Mounting NFSv3 uses default timeout parameters specified by underlying sunrpc transport, and mount options like 'timeo' and 'retrans', unlike NFSv4, are not honored. But sometimes we want to set non-default timeout value when mounting NFSv3, so pass 'timeo' and 'retrans' to nfs_mount() and fill the 'timeout' field of struct rpc_create_args before creating RPC connection. This is also consistent with NFSv4 behavior. Note that this only sets the timeout value of rpc connection to mountd, but the timeout of rpcbind connection should be set as well. A later patch will fix the rpcbind part. Signed-off-by: Eryu Guan <eguan@linux.alibaba.com> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
-rw-r--r--fs/nfs/internal.h2
-rw-r--r--fs/nfs/mount_clnt.c14
-rw-r--r--fs/nfs/super.c2
3 files changed, 11 insertions, 7 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 7b644d6c09e4..cf0d7db24d44 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -180,7 +180,7 @@ struct nfs_mount_request {
struct net *net;
};
-extern int nfs_mount(struct nfs_mount_request *info);
+extern int nfs_mount(struct nfs_mount_request *info, int timeo, int retrans);
extern void nfs_umount(const struct nfs_mount_request *info);
/* client.c */
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index dda5c3e65d8d..c5e3b6b3366a 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -136,14 +136,16 @@ struct mnt_fhstatus {
/**
* nfs_mount - Obtain an NFS file handle for the given host and path
* @info: pointer to mount request arguments
+ * @timeo: deciseconds the mount waits for a response before it retries
+ * @retrans: number of times the mount retries a request
*
- * Uses default timeout parameters specified by underlying transport. On
- * successful return, the auth_flavs list and auth_flav_len will be populated
- * with the list from the server or a faked-up list if the server didn't
- * provide one.
+ * Uses timeout parameters specified by caller. On successful return, the
+ * auth_flavs list and auth_flav_len will be populated with the list from the
+ * server or a faked-up list if the server didn't provide one.
*/
-int nfs_mount(struct nfs_mount_request *info)
+int nfs_mount(struct nfs_mount_request *info, int timeo, int retrans)
{
+ struct rpc_timeout mnt_timeout;
struct mountres result = {
.fh = info->fh,
.auth_count = info->auth_flav_len,
@@ -158,6 +160,7 @@ int nfs_mount(struct nfs_mount_request *info)
.protocol = info->protocol,
.address = info->sap,
.addrsize = info->salen,
+ .timeout = &mnt_timeout,
.servername = info->hostname,
.program = &mnt_program,
.version = info->version,
@@ -177,6 +180,7 @@ int nfs_mount(struct nfs_mount_request *info)
if (info->noresvport)
args.flags |= RPC_CLNT_CREATE_NONPRIVPORT;
+ nfs_init_timeout_values(&mnt_timeout, info->protocol, timeo, retrans);
mnt_clnt = rpc_create(&args);
if (IS_ERR(mnt_clnt))
goto out_clnt_err;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 94885c6f8f54..13a650750f04 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -867,7 +867,7 @@ static int nfs_request_mount(struct fs_context *fc,
* Now ask the mount server to map our export path
* to a file handle.
*/
- status = nfs_mount(&request);
+ status = nfs_mount(&request, ctx->timeo, ctx->retrans);
if (status != 0) {
dfprintk(MOUNT, "NFS: unable to mount server %s, error %d\n",
request.hostname, status);