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-rw-r--r--fs/nfs/inode.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index fda2b4966179..1a809f6f8989 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -236,6 +236,7 @@ nfs_get_root(struct super_block *sb, struct nfs_fh *rootfh, struct nfs_fsinfo *f
return ERR_PTR(error);
}
+ server->fsid = fsinfo->fattr->fsid;
return nfs_fhget(sb, rootfh, fsinfo->fattr);
}
@@ -1493,6 +1494,7 @@ out:
*/
static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
{
+ struct nfs_server *server;
struct nfs_inode *nfsi = NFS_I(inode);
loff_t cur_isize, new_isize;
unsigned int invalid = 0;
@@ -1511,6 +1513,12 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
if ((inode->i_mode & S_IFMT) != (fattr->mode & S_IFMT))
goto out_changed;
+ server = NFS_SERVER(inode);
+ /* Update the fsid if and only if this is the root directory */
+ if (inode == inode->i_sb->s_root->d_inode
+ && !nfs_fsid_equal(&server->fsid, &fattr->fsid))
+ server->fsid = fattr->fsid;
+
/*
* Update the read time so we don't revalidate too often.
*/