pnfs: recoalesce when ld write pagelist fails
For pnfs pagelist write failure, we need to pg_recoalesce and resend IO to
mds.
Signed-off-by: Peng Tao <peng_tao@emc.com>
Signed-off-by: Jim Rees <rees@umich.edu>
Cc: stable@kernel.org [3.0]
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 72813ed..106fd06 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1166,7 +1166,13 @@
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)) {
@@ -1182,6 +1188,11 @@
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);
@@ -1201,7 +1212,19 @@
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);
}