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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-09-07 18:28:10 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-09-07 18:38:04 -0400
commit0aea92bf67321fc600b6c61627e0fd46e8889a49 (patch)
tree315431149092e75d2fa1313b315cc1834dbf56cb /fs/nfs/super.c
parent47040da3c7524facd542f37ffeadedac4f228601 (diff)
downloadleg-kernel-0aea92bf67321fc600b6c61627e0fd46e8889a49.tar.gz
NFS: nfs_compare_super shouldn't check the auth flavour unless 'sec=' was set
Also don't worry about obsolete mount flags... Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/super.c')
-rw-r--r--fs/nfs/super.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index b2dd6da010b0..50bc31d8e7f0 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -2295,6 +2295,18 @@ void nfs_clone_super(struct super_block *sb, struct nfs_mount_info *mount_info)
nfs_initialise_sb(sb);
}
+#define NFS_MOUNT_CMP_FLAGMASK ~(NFS_MOUNT_INTR \
+ | NFS_MOUNT_SECURE \
+ | NFS_MOUNT_TCP \
+ | NFS_MOUNT_VER3 \
+ | NFS_MOUNT_KERBEROS \
+ | NFS_MOUNT_NONLM \
+ | NFS_MOUNT_BROKEN_SUID \
+ | NFS_MOUNT_STRICTLOCK \
+ | NFS_MOUNT_UNSHARED \
+ | NFS_MOUNT_NORESVPORT \
+ | NFS_MOUNT_LEGACY_INTERFACE)
+
static int nfs_compare_mount_options(const struct super_block *s, const struct nfs_server *b, int flags)
{
const struct nfs_server *a = s->s_fs_info;
@@ -2305,7 +2317,7 @@ static int nfs_compare_mount_options(const struct super_block *s, const struct n
goto Ebusy;
if (a->nfs_client != b->nfs_client)
goto Ebusy;
- if (a->flags != b->flags)
+ if ((a->flags ^ b->flags) & NFS_MOUNT_CMP_FLAGMASK)
goto Ebusy;
if (a->wsize != b->wsize)
goto Ebusy;
@@ -2319,7 +2331,8 @@ static int nfs_compare_mount_options(const struct super_block *s, const struct n
goto Ebusy;
if (a->acdirmax != b->acdirmax)
goto Ebusy;
- if (clnt_a->cl_auth->au_flavor != clnt_b->cl_auth->au_flavor)
+ if (b->flags & NFS_MOUNT_SECFLAVOUR &&
+ clnt_a->cl_auth->au_flavor != clnt_b->cl_auth->au_flavor)
goto Ebusy;
return 1;
Ebusy: