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Diffstat (limited to 'fs/nfs/write.c')
-rw-r--r--fs/nfs/write.c73
1 files changed, 43 insertions, 30 deletions
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index c9bd2a6b7d4..2219c88d96b 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -390,7 +390,7 @@ static int nfs_inode_add_request(struct inode *inode, struct nfs_page *req)
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);
@@ -428,7 +428,6 @@ static void
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)
@@ -762,6 +761,8 @@ int nfs_updatepage(struct file *file, struct page *page,
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));
@@ -1010,7 +1011,6 @@ static int nfs_flush_one(struct nfs_pageio_descriptor *desc, struct list_head *r
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);
@@ -1165,7 +1165,13 @@ static void nfs_writeback_done_full(struct rpc_task *task, void *calldata)
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)) {
@@ -1181,6 +1187,11 @@ static void nfs_writeback_release_full(void *calldata)
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);
@@ -1200,7 +1211,19 @@ remove_request:
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);
}
@@ -1281,7 +1304,7 @@ void nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
*/
argp->stable = NFS_FILE_SYNC;
}
- nfs_restart_rpc(task, server->nfs_client);
+ rpc_restart_call_prepare(task);
return;
}
if (time_before(complain, jiffies)) {
@@ -1553,6 +1576,10 @@ static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_contr
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.
@@ -1686,34 +1713,20 @@ out_error:
int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
struct page *page)
{
- 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);
}
#endif