[PATCH v4 04/27] pnfs: save layoutcommit cred at layout header

[Jim Rees <rees@umich.edu>]

From: Peng Tao <bergwolf@gmail.com>

No need to save it for every lseg.

Signed-off-by: Peng Tao <peng_tao@emc.com>
---
 fs/nfs/pnfs.c |    6 +++---
 fs/nfs/pnfs.h |    2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 3e0989d..201165e 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1384,7 +1384,7 @@ pnfs_set_layoutcommit(struct nfs_write_data *wdata)
 	if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) {
 		/* references matched in nfs4_layoutcommit_release */
 		get_lseg(wdata->lseg);
-		wdata->lseg->pls_lc_cred =
+		nfsi->layout->plh_lc_cred =
 			get_rpccred(wdata->args.context->state->owner->so_cred);
 		mark_as_dirty = true;
 		dprintk("%s: Set layoutcommit for inode %lu ",
@@ -1447,9 +1447,9 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync)
 	lseg = pnfs_list_write_lseg(inode);
 
 	end_pos = nfsi->layout->plh_lwb;
-	cred = lseg->pls_lc_cred;
+	cred = nfsi->layout->plh_lc_cred;
 	nfsi->layout->plh_lwb = 0;
-	lseg->pls_lc_cred = NULL;
+	nfsi->layout->plh_lc_cred = NULL;
 
 	memcpy(&data->args.stateid.data, nfsi->layout->plh_stateid.data,
 		sizeof(nfsi->layout->plh_stateid.data));
diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h
index 044cb3e..ac86c36 100644
--- a/fs/nfs/pnfs.h
+++ b/fs/nfs/pnfs.h
@@ -44,7 +44,6 @@ struct pnfs_layout_segment {
 	atomic_t pls_refcount;
 	unsigned long pls_flags;
 	struct pnfs_layout_hdr *pls_layout;
-	struct rpc_cred	*pls_lc_cred; /* LAYOUTCOMMIT credential */
 };
 
 enum pnfs_try_status {
@@ -128,6 +127,7 @@ struct pnfs_layout_hdr {
 	u32			plh_barrier; /* ignore lower seqids */
 	unsigned long		plh_flags;
 	loff_t			plh_lwb; /* last write byte for layoutcommit */
+	struct rpc_cred		*plh_lc_cred; /* layoutcommit cred */
 	struct inode		*plh_inode;
 };
 
-- 
1.7.4.1