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authorPeng Tao <bergwolf@gmail.com>2012-09-25 08:55:57 +0200
committerTrond Myklebust <Trond.Myklebust@netapp.com>2012-10-09 01:32:22 +0200
commit6296556f0b31eaff29f2a3aee2c17b7eae895b98 (patch)
tree19f39cac9cff045e8c753ab8908deadc1c9c6bab /fs/nfs/pnfs.c
parentNFS: track direct IO left bytes (diff)
downloadlinux-6296556f0b31eaff29f2a3aee2c17b7eae895b98.tar.xz
linux-6296556f0b31eaff29f2a3aee2c17b7eae895b98.zip
NFS41: send real write size in layoutget
For buffer write, block layout client scan inode mapping to find next hole and use offset-to-hole as layoutget length. Object layout client uses offset-to-isize as layoutget length. For direct write, both block layout and object layout 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/pnfs.c')
-rw-r--r--fs/nfs/pnfs.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index bd9769296e4e..9a2bcce45282 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1240,7 +1240,8 @@ pnfs_generic_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *r
EXPORT_SYMBOL_GPL(pnfs_generic_pg_init_read);
void
-pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req)
+pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio,
+ struct nfs_page *req, u64 wb_size)
{
BUG_ON(pgio->pg_lseg != NULL);
@@ -1248,10 +1249,11 @@ pnfs_generic_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *
nfs_pageio_reset_write_mds(pgio);
return;
}
+
pgio->pg_lseg = pnfs_update_layout(pgio->pg_inode,
req->wb_context,
req_offset(req),
- req->wb_bytes,
+ wb_size,
IOMODE_RW,
GFP_NOFS);
/* If no lseg, fall back to write through mds */