NFS: Revert pnfs ugliness from the generic NFS read code path
pNFS-specific code belongs in the pnfs layer. It should not be
hijacking generic NFS read or write code paths.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index c1a1bd8..3f4d957 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -299,6 +299,8 @@
extern int nfs_generic_pagein(struct nfs_pageio_descriptor *desc,
struct list_head *head);
+extern void nfs_pageio_init_read_mds(struct nfs_pageio_descriptor *pgio,
+ struct inode *inode);
extern void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio);
extern void nfs_readdata_release(struct nfs_read_data *rdata);
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index a2478bc..e40a3ca 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1259,6 +1259,25 @@
}
EXPORT_SYMBOL_GPL(pnfs_generic_pg_writepages);
+static void pnfs_ld_handle_read_error(struct nfs_read_data *data)
+{
+ struct nfs_pageio_descriptor pgio;
+
+ put_lseg(data->lseg);
+ data->lseg = NULL;
+ dprintk("pnfs write error = %d\n", data->pnfs_error);
+
+ nfs_pageio_init_read_mds(&pgio, data->inode);
+
+ while (!list_empty(&data->pages)) {
+ struct nfs_page *req = nfs_list_entry(data->pages.next);
+
+ nfs_list_remove_request(req);
+ nfs_pageio_add_request(&pgio, req);
+ }
+ nfs_pageio_complete(&pgio);
+}
+
/*
* Called by non rpc-based layout drivers
*/
@@ -1267,11 +1286,8 @@
if (likely(!data->pnfs_error)) {
__nfs4_read_done_cb(data);
data->mds_ops->rpc_call_done(&data->task, data);
- } else {
- put_lseg(data->lseg);
- data->lseg = NULL;
- dprintk("pnfs write error = %d\n", data->pnfs_error);
- }
+ } else
+ pnfs_ld_handle_read_error(data);
data->mds_ops->rpc_release(data);
}
EXPORT_SYMBOL_GPL(pnfs_ld_read_done);
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 8b48ec6..cfa175c 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -109,7 +109,7 @@
}
}
-static void nfs_pageio_init_read_mds(struct nfs_pageio_descriptor *pgio,
+void nfs_pageio_init_read_mds(struct nfs_pageio_descriptor *pgio,
struct inode *inode)
{
nfs_pageio_init(pgio, inode, &nfs_pageio_read_ops,
@@ -534,23 +534,13 @@
static void nfs_readpage_release_full(void *calldata)
{
struct nfs_read_data *data = calldata;
- struct nfs_pageio_descriptor pgio;
- if (data->pnfs_error) {
- nfs_pageio_init_read_mds(&pgio, data->inode);
- pgio.pg_recoalesce = 1;
- }
while (!list_empty(&data->pages)) {
struct nfs_page *req = nfs_list_entry(data->pages.next);
nfs_list_remove_request(req);
- if (!data->pnfs_error)
- nfs_readpage_release(req);
- else
- nfs_pageio_add_request(&pgio, req);
+ nfs_readpage_release(req);
}
- if (data->pnfs_error)
- nfs_pageio_complete(&pgio);
nfs_readdata_release(calldata);
}
