NFSv4.1: trigger LAYOUTGET for writes
Signed-off-by: Fred Isaman <iisaman@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 72b0ec0..49c4784 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -919,6 +919,8 @@
} while (nbytes != 0);
atomic_set(&req->wb_complete, requests);
+ BUG_ON(lseg);
+ lseg = pnfs_update_layout(inode, req->wb_context, IOMODE_RW);
ClearPageError(page);
offset = 0;
nbytes = count;
@@ -940,6 +942,7 @@
nbytes -= wsize;
} while (nbytes != 0);
+ put_lseg(lseg);
return ret;
out_bad:
@@ -965,11 +968,18 @@
struct nfs_page *req;
struct page **pages;
struct nfs_write_data *data;
+ int ret;
data = nfs_writedata_alloc(npages);
- if (!data)
- goto out_bad;
-
+ if (!data) {
+ while (!list_empty(head)) {
+ req = nfs_list_entry(head->next);
+ nfs_list_remove_request(req);
+ nfs_redirty_request(req);
+ }
+ ret = -ENOMEM;
+ goto out;
+ }
pages = data->pagevec;
while (!list_empty(head)) {
req = nfs_list_entry(head->next);
@@ -979,16 +989,14 @@
*pages++ = req->wb_page;
}
req = nfs_list_entry(data->pages.next);
+ if ((!lseg) && list_is_singular(&data->pages))
+ lseg = pnfs_update_layout(inode, req->wb_context, IOMODE_RW);
/* Set up the argument struct */
- return nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, lseg, how);
- out_bad:
- while (!list_empty(head)) {
- req = nfs_list_entry(head->next);
- nfs_list_remove_request(req);
- nfs_redirty_request(req);
- }
- return -ENOMEM;
+ ret = nfs_write_rpcsetup(req, data, &nfs_write_full_ops, count, 0, lseg, how);
+out:
+ put_lseg(lseg); /* Cleans any gotten in ->pg_test */
+ return ret;
}
static void nfs_pageio_init_write(struct nfs_pageio_descriptor *pgio,
@@ -996,7 +1004,7 @@
{
size_t wsize = NFS_SERVER(inode)->wsize;
- pgio->pg_test = NULL;
+ pnfs_pageio_init_write(pgio, inode);
if (wsize < PAGE_CACHE_SIZE)
nfs_pageio_init(pgio, inode, nfs_flush_multi, wsize, ioflags);