[PATCH-v2] NFS41: fix error of setting blocklayoutdriver

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After commit e38eb650 (NFS: set_pnfs_layoutdriver() from
nfs4_proc_fsinfo()), set_pnfs_layoutdriver() is called inside
nfs4_proc_fsinfo(), but pnfs_blksize is not set. It causes setting
blocklayoutdriver failure and pnfsblock mount failure.

Cc: Bryan Schumaker <bjschuma@xxxxxxxxxx>
Signed-off-by: Peng Tao <tao.peng@xxxxxxx>
---
 fs/nfs/client.c   |    1 -
 fs/nfs/nfs4proc.c |    5 ++++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index 9fc0d9d..a53a538 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -855,7 +855,6 @@ static void nfs_server_set_fsinfo(struct nfs_server *server,
 	if (server->wsize > NFS_MAX_FILE_IO_SIZE)
 		server->wsize = NFS_MAX_FILE_IO_SIZE;
 	server->wpages = (server->wsize + PAGE_CACHE_SIZE - 1) >> PAGE_CACHE_SHIFT;
-	server->pnfs_blksize = fsinfo->blksize;
 
 	server->wtmult = nfs_block_bits(fsinfo->wtmult, NULL);
 
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 78b2163..299c311 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3362,8 +3362,11 @@ static int nfs4_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle, s
 
 	nfs_fattr_init(fsinfo->fattr);
 	error = nfs4_do_fsinfo(server, fhandle, fsinfo);
-	if (error == 0)
+	if (error == 0) {
+		/* block layout checks this! */
+		server->pnfs_blksize = fsinfo->blksize;
 		set_pnfs_layoutdriver(server, fhandle, fsinfo->layouttype);
+	}
 
 	return error;
 }
-- 
1.7.1.262.g5ef3d

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