Commit c37dcd33 authored by Trond Myklebust's avatar Trond Myklebust

NFS: Fix the fsid revalidation in nfs_update_inode()

When we detect that we've crossed a mountpoint on the remote server, we
must take care not to use that inode to revalidate the fsid on our
current superblock. To do so, we label the inode as a remote mountpoint,
and check for that in nfs_update_inode().
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent ee1a2c56
......@@ -299,6 +299,7 @@ nfs_fhget(struct super_block *sb, struct nfs_fh *fh, struct nfs_fattr *fattr)
else
inode->i_op = &nfs_mountpoint_inode_operations;
inode->i_fop = NULL;
set_bit(NFS_INO_MOUNTPOINT, &nfsi->flags);
}
} else if (S_ISLNK(inode->i_mode))
inode->i_op = &nfs_symlink_inode_operations;
......@@ -1003,8 +1004,9 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
server = NFS_SERVER(inode);
/* Update the fsid? */
if (S_ISDIR(inode->i_mode)
&& !nfs_fsid_equal(&server->fsid, &fattr->fsid))
if (S_ISDIR(inode->i_mode) &&
!nfs_fsid_equal(&server->fsid, &fattr->fsid) &&
!test_bit(NFS_INO_MOUNTPOINT, &nfsi->flags))
server->fsid = fattr->fsid;
/*
......
......@@ -195,6 +195,7 @@ struct nfs_inode {
#define NFS_INO_ADVISE_RDPLUS (1) /* advise readdirplus */
#define NFS_INO_STALE (2) /* possible stale inode */
#define NFS_INO_ACL_LRU_SET (3) /* Inode is on the LRU list */
#define NFS_INO_MOUNTPOINT (4) /* inode is remote mountpoint */
static inline struct nfs_inode *NFS_I(const struct inode *inode)
{
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment