do_remount(): pull touch_mnt_namespace() up
... and don't bother with dropping and regaining vfsmount_lock Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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@ -1849,14 +1849,10 @@ static int do_remount(struct path *path, int flags, int mnt_flags,
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br_write_lock(&vfsmount_lock);
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mnt_flags |= mnt->mnt.mnt_flags & MNT_PROPAGATION_MASK;
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mnt->mnt.mnt_flags = mnt_flags;
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br_write_unlock(&vfsmount_lock);
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}
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up_write(&sb->s_umount);
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if (!err) {
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br_write_lock(&vfsmount_lock);
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touch_mnt_namespace(mnt->mnt_ns);
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br_write_unlock(&vfsmount_lock);
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}
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up_write(&sb->s_umount);
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return err;
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}
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