From:   Olga Kornievskaia <olga.kornievskaia@gmail.com>
To:     trond.myklebust@hammerspace.com, anna.schumaker@netapp.com
Cc:     linux-nfs@vger.kernel.org
Subject: [PATCH 2/7] NFSv4 store server support for fs_location attribute
Date:   Thu,  9 Dec 2021 14:53:30 -0500
Message-Id: <20211209195335.32404-3-olga.kornievskaia@gmail.com>
In-Reply-To: <20211209195335.32404-1-olga.kornievskaia@gmail.com>
References: <20211209195335.32404-1-olga.kornievskaia@gmail.com>
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From: Olga Kornievskaia <kolga@netapp.com>

Define and store if server returns it supports fs_locations attribute
as a capability.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
---
 fs/nfs/nfs4proc.c         | 2 ++
 include/linux/nfs_fs_sb.h | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 535436dbdc9a..199f03c9d0b2 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3873,6 +3873,8 @@ static int _nfs4_server_capabilities(struct nfs_server *server, struct nfs_fh *f
 		if (res.attr_bitmask[2] & FATTR4_WORD2_SECURITY_LABEL)
 			server->caps |= NFS_CAP_SECURITY_LABEL;
 #endif
+		if (res.attr_bitmask[0] & FATTR4_WORD0_FS_LOCATIONS)
+			server->caps |= NFS_CAP_FS_LOCATIONS;
 		if (!(res.attr_bitmask[0] & FATTR4_WORD0_FILEID))
 			server->fattr_valid &= ~NFS_ATTR_FATTR_FILEID;
 		if (!(res.attr_bitmask[1] & FATTR4_WORD1_MODE))
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 2a9acbfe00f0..9a6e70ccde56 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -287,5 +287,5 @@ struct nfs_server {
 #define NFS_CAP_COPY_NOTIFY	(1U << 27)
 #define NFS_CAP_XATTR		(1U << 28)
 #define NFS_CAP_READ_PLUS	(1U << 29)
-
+#define NFS_CAP_FS_LOCATIONS	(1U << 30)
 #endif
-- 
2.27.0