Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/fs/afs/file.c b/fs/afs/file.c
index 7d4f261..dd3c55c 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/* AFS filesystem file handling
*
* Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/kernel.h>
@@ -17,6 +13,7 @@
#include <linux/writeback.h>
#include <linux/gfp.h>
#include <linux/task_io_accounting_ops.h>
+#include <linux/mm.h>
#include "internal.h"
static int afs_file_mmap(struct file *file, struct vm_area_struct *vma);
@@ -121,7 +118,7 @@
struct key *key;
int ret;
- _enter("{%x:%u},", vnode->fid.vid, vnode->fid.vnode);
+ _enter("{%llx:%llu},", vnode->fid.vid, vnode->fid.vnode);
key = afs_request_key(vnode->volume->cell);
if (IS_ERR(key)) {
@@ -169,11 +166,12 @@
{
struct afs_vnode *vnode = AFS_FS_I(inode);
struct afs_file *af = file->private_data;
+ int ret = 0;
- _enter("{%x:%u},", vnode->fid.vid, vnode->fid.vnode);
+ _enter("{%llx:%llu},", vnode->fid.vid, vnode->fid.vnode);
if ((file->f_mode & FMODE_WRITE))
- return vfs_fsync(file, 0);
+ ret = vfs_fsync(file, 0);
file->private_data = NULL;
if (af->wb)
@@ -181,8 +179,8 @@
key_put(af->key);
kfree(af);
afs_prune_wb_keys(vnode);
- _leave(" = 0");
- return 0;
+ _leave(" = %d", ret);
+ return ret;
}
/*
@@ -193,11 +191,13 @@
int i;
if (refcount_dec_and_test(&req->usage)) {
- for (i = 0; i < req->nr_pages; i++)
- if (req->pages[i])
- put_page(req->pages[i]);
- if (req->pages != req->array)
- kfree(req->pages);
+ if (req->pages) {
+ for (i = 0; i < req->nr_pages; i++)
+ if (req->pages[i])
+ put_page(req->pages[i]);
+ if (req->pages != req->array)
+ kfree(req->pages);
+ }
kfree(req);
}
}
@@ -226,24 +226,32 @@
int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *desc)
{
struct afs_fs_cursor fc;
+ struct afs_status_cb *scb;
int ret;
- _enter("%s{%x:%u.%u},%x,,,",
+ _enter("%s{%llx:%llu.%u},%x,,,",
vnode->volume->name,
vnode->fid.vid,
vnode->fid.vnode,
vnode->fid.unique,
key_serial(key));
+ scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL);
+ if (!scb)
+ return -ENOMEM;
+
ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key)) {
+ if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
+ afs_dataversion_t data_version = vnode->status.data_version;
+
while (afs_select_fileserver(&fc)) {
fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_fetch_data(&fc, desc);
+ afs_fs_fetch_data(&fc, scb, desc);
}
- afs_check_for_remote_deletion(&fc, fc.vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break);
+ afs_check_for_remote_deletion(&fc, vnode);
+ afs_vnode_commit_status(&fc, vnode, fc.cb_break,
+ &data_version, scb);
ret = afs_end_vnode_operation(&fc);
}
@@ -253,6 +261,7 @@
&afs_v2net(vnode)->n_fetch_bytes);
}
+ kfree(scb);
_leave(" = %d", ret);
return ret;
}
@@ -299,10 +308,11 @@
/* page will not be cached */
case -ENOBUFS:
_debug("cache said ENOBUFS");
+
+ /* fall through */
default:
go_on:
- req = kzalloc(sizeof(struct afs_read) + sizeof(struct page *),
- GFP_KERNEL);
+ req = kzalloc(struct_size(req, array, 1), GFP_KERNEL);
if (!req)
goto enomem;
@@ -401,10 +411,10 @@
/*
* Make pages available as they're filled.
*/
-static void afs_readpages_page_done(struct afs_call *call, struct afs_read *req)
+static void afs_readpages_page_done(struct afs_read *req)
{
#ifdef CONFIG_AFS_FSCACHE
- struct afs_vnode *vnode = call->reply[0];
+ struct afs_vnode *vnode = req->vnode;
#endif
struct page *page = req->pages[req->index];
@@ -441,7 +451,7 @@
/* Count the number of contiguous pages at the front of the list. Note
* that the list goes prev-wards rather than next-wards.
*/
- first = list_entry(pages->prev, struct page, lru);
+ first = lru_to_page(pages);
index = first->index + 1;
n = 1;
for (p = first->lru.prev; p != pages; p = p->prev) {
@@ -452,12 +462,12 @@
n++;
}
- req = kzalloc(sizeof(struct afs_read) + sizeof(struct page *) * n,
- GFP_NOFS);
+ req = kzalloc(struct_size(req, array, n), GFP_NOFS);
if (!req)
return -ENOMEM;
refcount_set(&req->usage, 1);
+ req->vnode = vnode;
req->page_done = afs_readpages_page_done;
req->pos = first->index;
req->pos <<= PAGE_SHIFT;
@@ -473,7 +483,7 @@
* page at the end of the file.
*/
do {
- page = list_entry(pages->prev, struct page, lru);
+ page = lru_to_page(pages);
list_del(&page->lru);
index = page->index;
if (add_to_page_cache_lru(page, mapping, index,
@@ -634,7 +644,7 @@
struct afs_vnode *vnode = AFS_FS_I(page->mapping->host);
unsigned long priv;
- _enter("{{%x:%u}[%lu],%lx},%x",
+ _enter("{{%llx:%llu}[%lu],%lx},%x",
vnode->fid.vid, vnode->fid.vnode, page->index, page->flags,
gfp_flags);