NFS: Create a common pgio_alloc and pgio_release function
These functions are identical for the read and write paths so they can
be combined.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 321a791..0dc4d6a 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -87,31 +87,6 @@
}
EXPORT_SYMBOL_GPL(nfs_writehdr_alloc);
-static struct nfs_pgio_data *nfs_writedata_alloc(struct nfs_pgio_header *hdr,
- unsigned int pagecount)
-{
- struct nfs_pgio_data *data, *prealloc;
-
- prealloc = &container_of(hdr, struct nfs_rw_header, header)->rpc_data;
- if (prealloc->header == NULL)
- data = prealloc;
- else
- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (!data)
- goto out;
-
- if (nfs_pgarray_set(&data->pages, pagecount)) {
- data->header = hdr;
- atomic_inc(&hdr->refcnt);
- } else {
- if (data != prealloc)
- kfree(data);
- data = NULL;
- }
-out:
- return data;
-}
-
void nfs_writehdr_free(struct nfs_pgio_header *hdr)
{
struct nfs_rw_header *whdr = container_of(hdr, struct nfs_rw_header, header);
@@ -119,27 +94,6 @@
}
EXPORT_SYMBOL_GPL(nfs_writehdr_free);
-void nfs_writedata_release(struct nfs_pgio_data *wdata)
-{
- struct nfs_pgio_header *hdr = wdata->header;
- struct nfs_rw_header *write_header = container_of(hdr, struct nfs_rw_header, header);
-
- put_nfs_open_context(wdata->args.context);
- if (wdata->pages.pagevec != wdata->pages.page_array)
- kfree(wdata->pages.pagevec);
- if (wdata == &write_header->rpc_data) {
- wdata->header = NULL;
- wdata = NULL;
- }
- if (atomic_dec_and_test(&hdr->refcnt))
- hdr->completion_ops->completion(hdr);
- /* Note: we only free the rpc_task after callbacks are done.
- * See the comment in rpc_free_task() for why
- */
- kfree(wdata);
-}
-EXPORT_SYMBOL_GPL(nfs_writedata_release);
-
static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error)
{
ctx->error = error;
@@ -1146,7 +1100,7 @@
struct nfs_pgio_data *data = list_first_entry(&hdr->rpc_list,
struct nfs_pgio_data, list);
list_del(&data->list);
- nfs_writedata_release(data);
+ nfs_pgio_data_release(data);
}
desc->pg_completion_ops->error_cleanup(&desc->pg_list);
}
@@ -1179,7 +1133,7 @@
do {
size_t len = min(nbytes, wsize);
- data = nfs_writedata_alloc(hdr, 1);
+ data = nfs_pgio_data_alloc(hdr, 1);
if (!data) {
nfs_flush_error(desc, hdr);
return -ENOMEM;
@@ -1214,7 +1168,7 @@
struct list_head *head = &desc->pg_list;
struct nfs_commit_info cinfo;
- data = nfs_writedata_alloc(hdr, nfs_page_array_len(desc->pg_base,
+ data = nfs_pgio_data_alloc(hdr, nfs_page_array_len(desc->pg_base,
desc->pg_count));
if (!data) {
nfs_flush_error(desc, hdr);
@@ -1348,7 +1302,7 @@
set_bit(NFS_IOHDR_NEED_RESCHED, &hdr->flags);
spin_unlock(&hdr->lock);
}
- nfs_writedata_release(data);
+ nfs_pgio_data_release(data);
}
static const struct rpc_call_ops nfs_write_common_ops = {