static
int nfs_return_empty_page(struct page *page)
{
- zero_user_page(page, 0, PAGE_CACHE_SIZE, KM_USER0);
+ zero_user(page, 0, PAGE_CACHE_SIZE);
SetPageUptodate(page);
unlock_page(page);
return 0;
pglen = PAGE_CACHE_SIZE - base;
for (;;) {
if (remainder <= pglen) {
- zero_user_page(*pages, base, remainder, KM_USER0);
+ zero_user(*pages, base, remainder);
break;
}
- zero_user_page(*pages, base, pglen, KM_USER0);
+ zero_user(*pages, base, pglen);
pages++;
remainder -= pglen;
pglen = PAGE_CACHE_SIZE;
return PTR_ERR(new);
}
if (len < PAGE_CACHE_SIZE)
- zero_user_page(page, len, PAGE_CACHE_SIZE - len, KM_USER0);
+ zero_user_segment(page, len, PAGE_CACHE_SIZE);
nfs_list_add_request(new, &one_request);
if (NFS_SERVER(inode)->rsize < PAGE_CACHE_SIZE)
unlock_page(req->wb_page);
dprintk("NFS: read done (%s/%Ld %d@%Ld)\n",
- req->wb_context->dentry->d_inode->i_sb->s_id,
- (long long)NFS_FILEID(req->wb_context->dentry->d_inode),
+ req->wb_context->path.dentry->d_inode->i_sb->s_id,
+ (long long)NFS_FILEID(req->wb_context->path.dentry->d_inode),
req->wb_bytes,
(long long)req_offset(req));
nfs_clear_request(req);
const struct rpc_call_ops *call_ops,
unsigned int count, unsigned int offset)
{
- struct inode *inode;
- int flags;
+ struct inode *inode = req->wb_context->path.dentry->d_inode;
+ int swap_flags = IS_SWAPFILE(inode) ? NFS_RPC_SWAPFLAGS : 0;
+ struct rpc_task *task;
+ struct rpc_message msg = {
+ .rpc_argp = &data->args,
+ .rpc_resp = &data->res,
+ .rpc_cred = req->wb_context->cred,
+ };
+ struct rpc_task_setup task_setup_data = {
+ .task = &data->task,
+ .rpc_client = NFS_CLIENT(inode),
+ .rpc_message = &msg,
+ .callback_ops = call_ops,
+ .callback_data = data,
+ .flags = RPC_TASK_ASYNC | swap_flags,
+ };
data->req = req;
- data->inode = inode = req->wb_context->dentry->d_inode;
- data->cred = req->wb_context->cred;
+ data->inode = inode;
+ data->cred = msg.rpc_cred;
data->args.fh = NFS_FH(inode);
data->args.offset = req_offset(req) + offset;
nfs_fattr_init(&data->fattr);
/* Set up the initial task struct. */
- flags = RPC_TASK_ASYNC | (IS_SWAPFILE(inode)? NFS_RPC_SWAPFLAGS : 0);
- rpc_init_task(&data->task, NFS_CLIENT(inode), flags, call_ops, data);
- NFS_PROTO(inode)->read_setup(data);
-
- data->task.tk_cookie = (unsigned long)inode;
+ NFS_PROTO(inode)->read_setup(data, &msg);
dprintk("NFS: %5u initiated read call (req %s/%Ld, %u bytes @ offset %Lu)\n",
data->task.tk_pid,
(long long)NFS_FILEID(inode),
count,
(unsigned long long)data->args.offset);
+
+ task = rpc_run_task(&task_setup_data);
+ if (!IS_ERR(task))
+ rpc_put_task(task);
}
static void
}
}
-/*
- * Start an async read operation
- */
-static void nfs_execute_read(struct nfs_read_data *data)
-{
- struct rpc_clnt *clnt = NFS_CLIENT(data->inode);
- sigset_t oldset;
-
- rpc_clnt_sigmask(clnt, &oldset);
- rpc_execute(&data->task);
- rpc_clnt_sigunmask(clnt, &oldset);
-}
-
/*
* Generate multiple requests to fill a single page.
*
rsize, offset);
offset += rsize;
nbytes -= rsize;
- nfs_execute_read(data);
} while (nbytes != 0);
return 0;
req = nfs_list_entry(data->pages.next);
nfs_read_rpcsetup(req, data, &nfs_read_full_ops, count, 0);
-
- nfs_execute_read(data);
return 0;
out_bad:
nfs_async_read_error(head);
nfs_add_stats(data->inode, NFSIOS_SERVERREADBYTES, data->res.count);
if (task->tk_status == -ESTALE) {
- set_bit(NFS_INO_STALE, &NFS_FLAGS(data->inode));
+ set_bit(NFS_INO_STALE, &NFS_I(data->inode)->flags);
nfs_mark_for_revalidate(data->inode);
}
- spin_lock(&data->inode->i_lock);
- NFS_I(data->inode)->cache_validity |= NFS_INO_INVALID_ATIME;
- spin_unlock(&data->inode->i_lock);
return 0;
}
*/
error = nfs_wb_page(inode, page);
if (error)
- goto out_error;
+ goto out_unlock;
+ if (PageUptodate(page))
+ goto out_unlock;
error = -ESTALE;
if (NFS_STALE(inode))
- goto out_error;
+ goto out_unlock;
if (file == NULL) {
error = -EBADF;
ctx = nfs_find_open_context(inode, NULL, FMODE_READ);
if (ctx == NULL)
- goto out_error;
+ goto out_unlock;
} else
- ctx = get_nfs_open_context((struct nfs_open_context *)
- file->private_data);
+ ctx = get_nfs_open_context(nfs_file_open_context(file));
error = nfs_readpage_async(ctx, inode, page);
put_nfs_open_context(ctx);
return error;
-
-out_error:
+out_unlock:
unlock_page(page);
return error;
}
struct inode *inode = page->mapping->host;
struct nfs_page *new;
unsigned int len;
+ int error;
+
+ error = nfs_wb_page(inode, page);
+ if (error)
+ goto out_unlock;
+ if (PageUptodate(page))
+ goto out_unlock;
- nfs_wb_page(inode, page);
len = nfs_page_length(page);
if (len == 0)
return nfs_return_empty_page(page);
+
new = nfs_create_request(desc->ctx, inode, page, 0, len);
- if (IS_ERR(new)) {
- SetPageError(page);
- unlock_page(page);
- return PTR_ERR(new);
- }
+ if (IS_ERR(new))
+ goto out_error;
+
if (len < PAGE_CACHE_SIZE)
- zero_user_page(page, len, PAGE_CACHE_SIZE - len, KM_USER0);
+ zero_user_segment(page, len, PAGE_CACHE_SIZE);
nfs_pageio_add_request(desc->pgio, new);
return 0;
+out_error:
+ error = PTR_ERR(new);
+ SetPageError(page);
+out_unlock:
+ unlock_page(page);
+ return error;
}
int nfs_readpages(struct file *filp, struct address_space *mapping,
if (desc.ctx == NULL)
return -EBADF;
} else
- desc.ctx = get_nfs_open_context((struct nfs_open_context *)
- filp->private_data);
+ desc.ctx = get_nfs_open_context(nfs_file_open_context(filp));
if (rsize < PAGE_CACHE_SIZE)
nfs_pageio_init(&pgio, inode, nfs_pagein_multi, rsize, 0);
else
nfs_rdata_cachep = kmem_cache_create("nfs_read_data",
sizeof(struct nfs_read_data),
0, SLAB_HWCACHE_ALIGN,
- NULL, NULL);
+ NULL);
if (nfs_rdata_cachep == NULL)
return -ENOMEM;