fs: remove the unused SB_I_MULTIROOT flag

The last user of SB_I_MULTIROOT is disappeared with commit f2aedb713c28
("NFS: Add fs_context support.")

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/namei.c b/fs/namei.c
index e99e2a9..f1eb8cc 100644 (file)
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -568,8 +568,8 @@ static bool path_connected(struct vfsmount *mnt, struct dentry *dentry)
 {
        struct super_block *sb = mnt->mnt_sb;
 
-       /* Bind mounts and multi-root filesystems can have disconnected paths */
-       if (!(sb->s_iflags & SB_I_MULTIROOT) && (mnt->mnt_root == sb->s_root))
+       /* Bind mounts can have disconnected paths */
+       if (mnt->mnt_root == sb->s_root)
                return true;
 
        return is_subdir(dentry, mnt->mnt_root);

diff --git a/include/linux/fs.h b/include/linux/fs.h
index 7519ae0..fbd74df 100644 (file)
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1385,7 +1385,6 @@ extern int send_sigurg(struct fown_struct *fown);
 #define SB_I_CGROUPWB  0x00000001      /* cgroup-aware writeback enabled */
 #define SB_I_NOEXEC    0x00000002      /* Ignore executables on this fs */
 #define SB_I_NODEV     0x00000004      /* Ignore devices on this fs */
-#define SB_I_MULTIROOT 0x00000008      /* Multiple roots to the dentry tree */
 
 /* sb->s_iflags to limit user namespace mounts */
 #define SB_I_USERNS_VISIBLE            0x00000010 /* fstype already mounted */