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NFSv4: Fix the sync mount option for nfs4 mounts 

The sync mount option stopped working for NFSv4 mounts after commit
c02d7adf8c (NFSv4: Replace nfs4_path_walk() with
FS path lookup in a private namespace).  If MS_SYNCHRONOUS is set in the
super_block that we're cloning from, then it should be set in the new
super_block as well.

Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Scott Mayhew 2013-07-31 10:01:41 -04:00 committed by Trond Myklebust
parent f8806c843f
commit e890db0104
1 changed files with 4 additions and 0 deletions
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4
fs/nfs/super.c
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@ -2478,6 +2478,10 @@ struct dentry *nfs_fs_mount_common(struct nfs_server *server,
if (server->flags & NFS_MOUNT_NOAC)
sb_mntdata.mntflags |= MS_SYNCHRONOUS;
if (mount_info->cloned != NULL && mount_info->cloned->sb != NULL)
if (mount_info->cloned->sb->s_flags & MS_SYNCHRONOUS)
sb_mntdata.mntflags |= MS_SYNCHRONOUS;
/* Get a superblock - note that we may end up sharing one that already exists */
s = sget(nfs_mod->nfs_fs, compare_super, nfs_set_super, flags, &sb_mntdata);
if (IS_ERR(s)) {