#include <linux/nfs_mount.h>
#include <linux/nfs_page.h>
#include <linux/backing-dev.h>
+#include <linux/export.h>
#include <asm/uaccess.h>
error = radix_tree_insert(&nfsi->nfs_page_tree, req->wb_index, req);
BUG_ON(error);
if (!nfsi->npages && nfs_have_delegation(inode, FMODE_WRITE))
- nfsi->change_attr++;
+ inode->i_version++;
set_bit(PG_MAPPED, &req->wb_flags);
SetPagePrivate(req->wb_page);
set_page_private(req->wb_page, (unsigned long)req);
nfs_mark_request_dirty(struct nfs_page *req)
{
__set_page_dirty_nobuffers(req->wb_page);
- __mark_inode_dirty(req->wb_page->mapping->host, I_DIRTY_DATASYNC);
}
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
status = nfs_writepage_setup(ctx, page, offset, count);
if (status < 0)
nfs_set_pageerror(page);
+ else
+ __set_page_dirty_nobuffers(page);
dprintk("NFS: nfs_updatepage returns %d (isize %lld)\n",
status, (long long)i_size_read(inode));
while (!list_empty(res)) {
data = list_entry(res->next, struct nfs_write_data, list);
list_del(&data->list);
- nfs_writedata_free(data);
+ nfs_writedata_release(data);
}
nfs_redirty_request(req);
return -ENOMEM;
req = nfs_list_entry(head->next);
nfs_list_remove_request(req);
nfs_list_add_request(req, &data->pages);
- ClearPageError(req->wb_page);
*pages++ = req->wb_page;
}
req = nfs_list_entry(data->pages.next);
static void nfs_writeback_release_full(void *calldata)
{
struct nfs_write_data *data = calldata;
- int status = data->task.tk_status;
+ int ret, status = data->task.tk_status;
+ struct nfs_pageio_descriptor pgio;
+
+ if (data->pnfs_error) {
+ nfs_pageio_init_write_mds(&pgio, data->inode, FLUSH_STABLE);
+ pgio.pg_recoalesce = 1;
+ }
/* Update attributes as result of writeback. */
while (!list_empty(&data->pages)) {
req->wb_bytes,
(long long)req_offset(req));
+ if (data->pnfs_error) {
+ dprintk(", pnfs error = %d\n", data->pnfs_error);
+ goto next;
+ }
+
if (status < 0) {
nfs_set_pageerror(page);
nfs_context_set_write_error(req->wb_context, status);
next:
nfs_clear_page_tag_locked(req);
nfs_end_page_writeback(page);
+ if (data->pnfs_error) {
+ lock_page(page);
+ nfs_pageio_cond_complete(&pgio, page->index);
+ ret = nfs_page_async_flush(&pgio, page, 0);
+ if (ret) {
+ nfs_set_pageerror(page);
+ dprintk("rewrite to MDS error = %d\n", ret);
+ }
+ unlock_page(page);
+ }
}
+ if (data->pnfs_error)
+ nfs_pageio_complete(&pgio);
nfs_writedata_release(calldata);
}
{
struct nfs_writeargs *argp = &data->args;
struct nfs_writeres *resp = &data->res;
- struct nfs_server *server = NFS_SERVER(data->inode);
int status;
dprintk("NFS: %5u nfs_writeback_done (status %d)\n",
if (time_before(complain, jiffies)) {
dprintk("NFS: faulty NFS server %s:"
" (committed = %d) != (stable = %d)\n",
- server->nfs_client->cl_hostname,
+ NFS_SERVER(data->inode)->nfs_client->cl_hostname,
resp->verf->committed, argp->stable);
complain = jiffies + 300 * HZ;
}
*/
argp->stable = NFS_FILE_SYNC;
}
- nfs_restart_rpc(task, server->nfs_client);
+ rpc_restart_call_prepare(task);
return;
}
if (time_before(complain, jiffies)) {
int flags = FLUSH_SYNC;
int ret = 0;
+ /* no commits means nothing needs to be done */
+ if (!nfsi->ncommit)
+ return ret;
+
if (wbc->sync_mode == WB_SYNC_NONE) {
/* Don't commit yet if this is a non-blocking flush and there
* are a lot of outstanding writes for this mapping.
#ifdef CONFIG_MIGRATION
int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
- struct page *page)
+ struct page *page, enum migrate_mode mode)
{
- struct nfs_page *req;
- int ret;
+ /*
+ * If PagePrivate is set, then the page is currently associated with
+ * an in-progress read or write request. Don't try to migrate it.
+ *
+ * FIXME: we could do this in principle, but we'll need a way to ensure
+ * that we can safely release the inode reference while holding
+ * the page lock.
+ */
+ if (PagePrivate(page))
+ return -EBUSY;
nfs_fscache_release_page(page, GFP_KERNEL);
- req = nfs_find_and_lock_request(page, false);
- ret = PTR_ERR(req);
- if (IS_ERR(req))
- goto out;
-
- ret = migrate_page(mapping, newpage, page);
- if (!req)
- goto out;
- if (ret)
- goto out_unlock;
- page_cache_get(newpage);
- spin_lock(&mapping->host->i_lock);
- req->wb_page = newpage;
- SetPagePrivate(newpage);
- set_page_private(newpage, (unsigned long)req);
- ClearPagePrivate(page);
- set_page_private(page, 0);
- spin_unlock(&mapping->host->i_lock);
- page_cache_release(page);
-out_unlock:
- nfs_clear_page_tag_locked(req);
-out:
- return ret;
+ return migrate_page(mapping, newpage, page, mode);
}
#endif
nfs_wdata_mempool = mempool_create_slab_pool(MIN_POOL_WRITE,
nfs_wdata_cachep);
if (nfs_wdata_mempool == NULL)
- return -ENOMEM;
+ goto out_destroy_write_cache;
nfs_commit_mempool = mempool_create_slab_pool(MIN_POOL_COMMIT,
nfs_wdata_cachep);
if (nfs_commit_mempool == NULL)
- return -ENOMEM;
+ goto out_destroy_write_mempool;
/*
* NFS congestion size, scale with available memory.
nfs_congestion_kb = 256*1024;
return 0;
+
+out_destroy_write_mempool:
+ mempool_destroy(nfs_wdata_mempool);
+out_destroy_write_cache:
+ kmem_cache_destroy(nfs_wdata_cachep);
+ return -ENOMEM;
}
void nfs_destroy_writepagecache(void)
git.openpandora.org / pandora-kernel.git / blobdiff