[PATCH 06/10] pnfs-submit: Add state flag for layoutcommit_needed

[Fred Isaman <iisaman@netapp.com>]

This avoids locking and existance of layout issues in upcoming patches

Signed-off-by: Fred Isaman <iisaman@netapp.com>
---
 fs/nfs/pnfs.c             |    2 ++
 include/linux/nfs4_pnfs.h |    2 +-
 include/linux/nfs_fs.h    |    1 +
 3 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index e667208..6def09c 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -155,6 +155,7 @@ pnfs_need_layoutcommit(struct nfs_inode *nfsi, struct nfs_open_context *ctx)
 	spin_lock(&nfsi->lo_lock);
 	if (has_layout(nfsi) && !layoutcommit_needed(nfsi)) {
 		nfsi->layout.lo_cred = get_rpccred(ctx->state->owner->so_cred);
+		__set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->pnfs_layout_state);
 		nfsi->change_attr++;
 		spin_unlock(&nfsi->lo_lock);
 		dprintk("%s: Set layoutcommit\n", __func__);
@@ -1686,6 +1687,7 @@ pnfs_layoutcommit_inode(struct inode *inode, int sync)
 	nfsi->layout.pnfs_write_begin_pos = 0;
 	nfsi->layout.pnfs_write_end_pos = 0;
 	nfsi->layout.lo_cred = NULL;
+	__clear_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->pnfs_layout_state);
 	pnfs_get_layout_stateid(&data->args.stateid, &nfsi->layout);
 
 	spin_unlock(&nfsi->lo_lock);
diff --git a/include/linux/nfs4_pnfs.h b/include/linux/nfs4_pnfs.h
index 9dac941..0eb9b16 100644
--- a/include/linux/nfs4_pnfs.h
+++ b/include/linux/nfs4_pnfs.h
@@ -83,7 +83,7 @@ has_layout(struct nfs_inode *nfsi)
 static inline bool
 layoutcommit_needed(struct nfs_inode *nfsi)
 {
-	return nfsi->layout.lo_cred != NULL;
+	return test_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->pnfs_layout_state);
 }
 
 #else /* CONFIG_NFS_V4_1 */
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 0b3419d..71bbc4c 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -208,6 +208,7 @@ struct nfs_inode {
 	#define NFS_INO_RO_LAYOUT_FAILED 0	/* get ro layout failed stop trying */
 	#define NFS_INO_RW_LAYOUT_FAILED 1	/* get rw layout failed stop trying */
 	#define NFS_INO_LAYOUT_ALLOC     2	/* bit lock for layout allocation */
+	#define NFS_INO_LAYOUTCOMMIT     3	/* LAYOUTCOMMIT needed */
 	time_t pnfs_layout_suspend;
 #endif /* CONFIG_NFS_V4_1 */
 #endif /* CONFIG_NFS_V4*/
-- 
1.6.6.1