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NFS: Add softreval behaviour to nfs_lookup_revalidate()

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If the server is unavaliable, we want to allow the revalidating
lookup to time out, and to default to validating the cached dentry
if the 'softreval' mount option is set.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Trond Myklebust
2020-01-14 12:06:34 -05:00
committed by Anna Schumaker
parent fe1e8dbec1
commit f7b37b8b13
9 changed files with 66 additions and 31 deletions
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3
fs/nfs/nfs4namespace.c
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@@ -442,12 +442,11 @@ int nfs4_submount(struct fs_context *fc, struct nfs_server *server)
struct dentry *dentry = ctx->clone_data.dentry;
struct dentry *parent = dget_parent(dentry);
struct inode *dir = d_inode(parent);
const struct qstr *name = &dentry->d_name;
struct rpc_clnt *client;
int ret;
/* Look it up again to get its attributes and sec flavor */
client = nfs4_proc_lookup_mountpoint(dir, name, ctx->mntfh,
client = nfs4_proc_lookup_mountpoint(dir, dentry, ctx->mntfh,
ctx->clone_data.fattr);
dput(parent);
if (IS_ERR(client))