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authorFred Isaman <iisaman@netapp.com>2012-04-20 14:47:47 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-04-27 14:10:37 -0400
commit6c75dc0d498caa402fb17b1bf769835a9db875c8 (patch)
treeb367bb2428c011f20b8fd47a6dd0b8603ee136ba /fs/nfs/direct.c
parent4db6e0b74c0f6dfc2f9c0690e8df512e3b635983 (diff)
NFS: merge _full and _partial write rpc_ops
Decouple nfs_pgio_header and nfs_write_data, and have (possibly multiple) nfs_write_datas each take a refcount on nfs_pgio_header. For the moment keeps nfs_write_header as a way to preallocate a single nfs_write_data with the nfs_pgio_header. The code doesn't need this, and would be prettier without, but given the amount of churn I am already introducing I didn't want to play with tuning new mempools. This also fixes bug in pnfs_ld_handle_write_error. In the case of desc->pg_bsize < PAGE_CACHE_SIZE, the pages list was empty, causing replay attempt to do nothing. Signed-off-by: Fred Isaman <iisaman@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/direct.c')
-rw-r--r--fs/nfs/direct.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index 90b00ce42cb..22a40c40844 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -768,11 +768,17 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
bytes = min(wsize,count);
result = -ENOMEM;
- whdr = nfs_writehdr_alloc(nfs_page_array_len(pgbase, bytes));
+ whdr = nfs_writehdr_alloc();
if (unlikely(!whdr))
break;
- data = &whdr->rpc_data;
+ data = nfs_writedata_alloc(&whdr->header, nfs_page_array_len(pgbase, bytes));
+ if (!data) {
+ nfs_writehdr_free(&whdr->header);
+ break;
+ }
+ data->header = &whdr->header;
+ atomic_inc(&data->header->refcnt);
pages = &data->pages;
down_read(&current->mm->mmap_sem);