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authorNeilBrown <neilb@suse.com>2018-12-03 11:30:30 +1100
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2018-12-19 13:52:45 -0500
commitddf529eeed59184c49dcad1633c11831f822bf6b (patch)
treec648594f18928ae2897f01ade6ca8ef337cec46f /fs/nfs/inode.c
parentSUNRPC: add side channel to use non-generic cred for rpc call. (diff)
downloadlinux-dev-ddf529eeed59184c49dcad1633c11831f822bf6b.tar.xz
linux-dev-ddf529eeed59184c49dcad1633c11831f822bf6b.zip
NFS: move credential expiry tracking out of SUNRPC into NFS.
NFS needs to know when a credential is about to expire so that it can modify write-back behaviour to finish the write inside the expiry time. It currently uses functions in SUNRPC code which make use of a fairly complex callback scheme and flags in the generic credientials. As I am working to discard the generic credentials, this has to change. This patch moves the logic into NFS, in part by finding and caching the low-level credential in the open_context. We then make direct cred-api calls on that. This makes the code much simpler and removes a dependency on generic rpc credentials. Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/inode.c')
-rw-r--r--fs/nfs/inode.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 5b1eee4952b7..aea015743172 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -962,6 +962,7 @@ struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry,
nfs_sb_active(dentry->d_sb);
ctx->dentry = dget(dentry);
ctx->cred = cred;
+ ctx->ll_cred = NULL;
ctx->state = NULL;
ctx->mode = f_mode;
ctx->flags = 0;
@@ -1001,6 +1002,7 @@ static void __put_nfs_open_context(struct nfs_open_context *ctx, int is_sync)
put_rpccred(ctx->cred);
dput(ctx->dentry);
nfs_sb_deactive(sb);
+ put_rpccred(ctx->ll_cred);
kfree(ctx->mdsthreshold);
kfree_rcu(ctx, rcu_head);
}