From 1fd937bd7583e618df0528f0268b210f265d6910 Mon Sep 17 00:00:00 2001 From: Peng Tao Date: Tue, 25 Sep 2012 14:55:57 +0800 Subject: NFS41: send real read size in layoutget For buffer read, use offst-to-isize. For direct read, use dreq->bytes_left. Signed-off-by: Peng Tao Signed-off-by: Trond Myklebust --- fs/nfs/pnfs.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'fs/nfs') diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 9a2bcce45282..fe624c91bd00 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -1220,16 +1220,24 @@ out_forget_reply: void pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { + u64 rd_size = req->wb_bytes; + BUG_ON(pgio->pg_lseg != NULL); if (req->wb_offset != req->wb_pgbase) { nfs_pageio_reset_read_mds(pgio); return; } + + if (pgio->pg_dreq == NULL) + rd_size = i_size_read(pgio->pg_inode) - req_offset(req); + else + rd_size = nfs_dreq_bytes_left(pgio->pg_dreq); + pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode, req->wb_context, req_offset(req), - req->wb_bytes, + rd_size, IOMODE_READ, GFP_KERNEL); /* If no lseg, fall back to read through mds */ -- cgit v1.2.3