struct page *page, void *fsdata)
{
unsigned offset = pos & (PAGE_CACHE_SIZE - 1);
+ struct nfs_open_context *ctx = nfs_file_open_context(file);
int status;
dfprintk(PAGECACHE, "NFS: write_end(%s/%s(%ld), %u@%lld)\n",
if (status < 0)
return status;
NFS_I(mapping->host)->write_io += copied;
+
+ if (nfs_ctx_key_to_expire(ctx)) {
+ status = nfs_wb_all(mapping->host);
+ if (status < 0)
+ return status;
+ }
+
return copied;
}
if (IS_SYNC(inode) || (filp->f_flags & O_DSYNC))
return 1;
ctx = nfs_file_open_context(filp);
- if (test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags))
+ if (test_bit(NFS_CONTEXT_ERROR_WRITE, &ctx->flags) ||
+ nfs_ctx_key_to_expire(ctx))
return 1;
return 0;
}
ssize_t result;
size_t count = iov_length(iov, nr_segs);
+ result = nfs_key_timeout_notify(iocb->ki_filp, inode);
+ if (result)
+ return result;
+
if (iocb->ki_filp->f_flags & O_DIRECT)
return nfs_file_direct_write(iocb, iov, nr_segs, pos, true);
void nfs_init_cinfo(struct nfs_commit_info *cinfo,
struct inode *inode,
struct nfs_direct_req *dreq);
+int nfs_key_timeout_notify(struct file *filp, struct inode *inode);
+bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx);
#ifdef CONFIG_MIGRATION
extern int nfs_migrate_page(struct address_space *,
return status;
}
+/*
+ * Avoid buffered writes when a open context credential's key would
+ * expire soon.
+ *
+ * Returns -EACCES if the key will expire within RPC_KEY_EXPIRE_FAIL.
+ *
+ * Return 0 and set a credential flag which triggers the inode to flush
+ * and performs NFS_FILE_SYNC writes if the key will expired within
+ * RPC_KEY_EXPIRE_TIMEO.
+ */
+int
+nfs_key_timeout_notify(struct file *filp, struct inode *inode)
+{
+ struct nfs_open_context *ctx = nfs_file_open_context(filp);
+ struct rpc_auth *auth = NFS_SERVER(inode)->client->cl_auth;
+
+ return rpcauth_key_timeout_notify(auth, ctx->cred);
+}
+
+/*
+ * Test if the open context credential key is marked to expire soon.
+ */
+bool nfs_ctx_key_to_expire(struct nfs_open_context *ctx)
+{
+ return rpcauth_cred_key_to_expire(ctx->cred);
+}
+
/*
* If the page cache is marked as unsafe or invalid, then we can't rely on
* the PageUptodate() flag. In this case, we will need to turn off