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| author | Peng Tao <bergwolf@gmail.com> | 2012-09-25 14:55:57 +0800 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2012-10-08 19:32:34 -0400 |
| commit | 1fd937bd7583e618df0528f0268b210f265d6910 (patch) | |
| tree | 6cc162c459c5acbe7f3126cb8159e500f9dd6e38 /fs/nfs | |
| parent | 6296556f0b31eaff29f2a3aee2c17b7eae895b98 (diff) | |
| download | op-kernel-dev-1fd937bd7583e618df0528f0268b210f265d6910.zip op-kernel-dev-1fd937bd7583e618df0528f0268b210f265d6910.tar.gz | |
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 <tao.peng@emc.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/pnfs.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index 9a2bcce..fe624c9 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 */ |
